S-19501AFPA-E8T1U4 [ABLIC]
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION;
| 型号： | S-19501AFPA-E8T1U4 |
| 厂家： | 
ABLIC |
| 描述： | AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION 输入元件 |
| 文件： | 总47页 (文件大小：692K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
S-19500/19501 Series
AUTOMOTIVE, 125°C OPERATION,
36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER
VOLTAGE REGULATOR WITH RESET FUNCTION
www.ablic.com
© ABLIC Inc., 2014-2019
Rev.1.5_00
The S-19500/19501 Series, developed by using high-withstand voltage CMOS technology, is a low dropout positive
voltage regulator with the watchdog timer and the reset function, which has high-withstand voltage. The monitoring time of
watchdog timer can be adjusted by an external capacitor. Moreover, a voltage detection circuit which monitors the output
voltage is also prepared.
ABLIC Inc. offers a "thermal simulation service" which supports the thermal design in conditions when our power
management ICs are in use by customers. Our thermal simulation service will contribute to reducing the risk in the thermal
design at customers' development stage.
For more information regarding our thermal simulation service, contact our sales office.
Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in
the purpose, contact to ABLIC Inc. is indispensable.
Features
Regulator block
• Output voltage:
• Input voltage:
3.0 V to 5.3 V, selectable in 0.1 V step
4.0 V to 36.0 V
• Output voltage accuracy:
• Dropout voltage:
• Output current:
• Input and output capacitors:
• Ripple rejection:
2.0% (Tj = −40°C to +150°C)
120 mV typ. (5.0 V output product, IOUT = 100 mA)
Possible to output 200 mA (VIN = VOUT(S) + 1.0 V)*1
A ceramic capacitor of 2.2 μF or more can be used.
70 dB typ. (f = 100 Hz)
• Built-in overcurrent protection circuit:
• Built-in thermal shutdown circuit:
Limits overcurrent of output transistor.
Detection temperature 170°C typ.
Detector block
• Detection voltage:
2.6 V to 5.0 V, selectable in 0.1 V step
100 mV (Tj = −40°C to +150°C)
0.12 V min.
• Detection voltage accuracy:
• Hysteresis width:
• Release delay time is adjustable*2:
18 ms typ. (CDLY = 47 nF)
Watchdog timer block
• Watchdog activation current is adjustable: 1.5 mA typ. (WADJ pin is open)
• Watchdog trigger time is adjustable*2:
• Product type is selectable:
43 ms typ. (CDLY = 47 nF)
S-19500 Series (Product with WEN pin (Output: WO / RO pin))
S-19501 Series (Product without WEN pin (Output: WO pin and RO pin))
• Autonomous watchdog operation function: Watchdog timer operates due to detection of load current.
• Watchdog mode:
Time-out mode
Overall
• Current consumption:
60 μA typ. (IOUT = 0 mA, During the watchdog timer deactivation)
75 μA typ. (IOUT ≤ 5 mA, During the watchdog timer activation)
Ta = −40°C to +125°C
• Operation temperature range:
• Lead-free (Sn 100%), halogen-free
• Withstand 45 V load dump
• AEC-Q100 qualified*3
*1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large.
*2. The release delay time and the watchdog trigger time can be adjusted by connecting CDLY to the DLY pin.
*3. Contact our sales office for details.
Applications
• Constant-voltage power supply for automotive electric component, monitoring of microcotroller
Package
• HSOP-8A
1
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
Block Diagrams
1. S-19500 Series (Product with WEN pin)
VIN
VOUT
Overcurrent protection circuit
Thermal
shutdown
circuit
+
−
Reference
voltage circuit
WI
WEN
WDT
circuit
+
−
WADJ
DLY
Voltage
detection
circuit
WO / RO
−
+
Reference
voltage
circuit
−
+
VSS
Figure 1
2. S-19501 Series (Product without WEN pin)
VIN
VOUT
Overcurrent protection circuit
Thermal
shutdown
circuit
+
−
Reference
voltage circuit
WI
WDT
circuit
+
−
WADJ
DLY
WO
Voltage
detection
circuit
−
+
Reference
RO
voltage
circuit
−
+
VSS
Figure 2
2
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
AEC-Q100 Qualified
This IC supports AEC-Q100 for the operation temperature grade 1.
Contact our sales office for details of AEC-Q100 reliability specification.
Product Name Structure
1. Product name
S-1950
x
A
x
x
A
-
E8T1
U
4
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications*1
E8T1: HSOP-8A, Tape
Operation temperature
A:
Ta = −40°C to +125°C
Detection voltage*2
F to Z, 0 to 5
Output voltage*2
C to Z, 0, 1
Product type
0:
1:
S-19500 Series (Product with WEN pin)
S-19501 Series (Product without WEN pin)
*1. Refer to the tape drawing.
*2. Refer to "2. Product option list".
2. Product option list
Table 1 Output Voltage
Table 2 Detection Voltage
Set Output
Voltage
Set Output
Symbol
Set Detection
Voltage
Set Detection
Voltage
Symbol
Symbol
Symbol
Voltage
5.3 V
5.2 V
5.1 V
5.0 V
4.9 V
4.8 V
4.7 V
4.6 V
4.5 V
4.4 V
4.3 V
4.2 V
C
D
E
F
4.1 V
4.0 V
3.9 V
3.8 V
3.7 V
3.6 V
3.5 V
3.4 V
3.3 V
3.2 V
3.1 V
3.0 V
Q
R
S
T
5.0 V
4.9 V
4.8 V
4.7 V
4.6 V
4.5 V
4.4 V
4.3 V
4.2 V
4.1 V
4.0 V
3.9 V
3.8 V
F
G
H
J
3.7 V
3.6 V
3.5 V
3.4 V
3.3 V
3.2 V
3.1 V
3.0 V
2.9 V
2.8 V
2.7 V
2.6 V
U
V
W
X
Y
Z
0
G
H
J
U
V
W
X
Y
Z
K
L
M
N
P
Q
R
S
T
K
L
1
2
M
N
P
3
0
4
1
5
Remark Set output voltage ≥ Set detection voltage + 0.3 V
3
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
3. Package
Table 3 Package Drawing Codes
Package Name
HSOP-8A
Dimension
FH008-A-P-SD
Tape
Reel
Land
FH008-A-C-SD
FH008-A-R-SD
FH008-A-L-SD
4. Product name list
4. 1 S-19500 Series (Product with WEN pin)
Table 4
Output Voltage (VOUT
3.1 V 2.0%
3.3 V 2.0%
3.3 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.3 V 2.0%
)
Detection Voltage (−VDET
2.8 V 0.1 V
2.8 V 0.1 V
3.0 V 0.1 V
2.8 V 0.1 V
4.2 V 0.1 V
4.5 V 0.1 V
4.6 V 0.1 V
4.7 V 0.1 V
5.0 V 0.1 V
)
HSOP-8A
S-19500A03A-E8T1U4
S-19500AY3A-E8T1U4
S-19500AY1A-E8T1U4
S-19500AF3A-E8T1U4
S-19500AFPA-E8T1U4
S-19500AFLA-E8T1U4
S-19500AFKA-E8T1U4
S-19500AFJA-E8T1U4
S-19500ACFA-E8T1U4
Remark Please contact our sales office for products other than the above.
4. 2 S-19501 Series (Product without WEN pin)
Table 5
Output Voltage (VOUT
3.3 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
5.0 V 2.0%
)
Detection Voltage (−VDET
2.8 V 0.1 V
)
HSOP-8A
S-19501AY3A-E8T1U4
S-19501AF2A-E8T1U4
S-19501AFWA-E8T1U4
S-19501AFPA-E8T1U4
S-19501AFLA-E8T1U4
S-19501AFKA-E8T1U4
S-19501AFJA-E8T1U4
2.9 V 0.1 V
3.5 V 0.1 V
4.2 V 0.1 V
4.5 V 0.1 V
4.6 V 0.1 V
4.7 V 0.1 V
Remark Please contact our sales office for products other than the above.
4
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Pin Configuration
1. HSOP-8A
Table 6 S-19500 Series (Product with WEN pin)
Top view
Pin No.
1
Symbol
VOUT
Description
Voltage output pin (Regulator block)
Connection pin for watchdog activation
threshold current adjustment resistor
GND pin
1
2
3
4
8
7
6
5
2
3
4
WADJ
VSS
Connection pin for release delay time and
monitoring time adjustment capacitor
DLY
WO
RO
Watchdog output pin
Reset output pin
5
WO / RO*2
Bottom view
6
7
8
WEN
WI
Watchdog enable pin
Watchdog input pin
8
7
6
5
1
2
3
4
VIN
Voltage input pin (Regulator block)
Table 7 S-19501 Series (Product without WEN pin)
Pin No.
1
Symbol
VOUT
Description
*1
Voltage output pin (Regulator block)
Connection pin for watchdog activation
threshold current adjustment resistor
GND pin
2
3
4
WADJ
VSS
Figure 3
Connection pin for release delay time and
monitoring time adjustment capacitor
Reset output pin
DLY
5
6
7
8
RO
WO
WI
Watchdog output pin
Watchdog input pin
VIN
Voltage input pin (Regulator block)
*1. Connect the heat sink of backside at shadowed area to the board, and set electric potential GND.
However, do not use it as the function of electrode.
*2. The WO / RO pin combines the watchdog output pin and the reset output pin.
5
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
Absolute Maximum Ratings
Table 8
(Tj = −40°C to +150°C unless otherwise specified)
Item
Symbol
Absolute Maximum Rating
Unit
V
VIN pin voltage
VIN
VOUT
VSS − 0.3 to VSS + 45.0
VOUT pin voltage
DLY pin voltage
VSS − 0.3 to VIN + 0.3 ≤ VSS + 7.0
VSS − 0.3 to VOUT + 0.3 ≤ VSS + 7.0
VSS − 0.3 to VOUT + 0.3 ≤ VSS + 7.0
VSS − 0.3 to VIN + 0.3 ≤ VSS + 7.0
VSS − 0.3 to VSS + 7.0
V
VDLY
VRO
V
RO pin voltage
V
WADJ pin voltage
WEN pin voltage
WI pin voltage
VWADJ
VWEN
VWI
V
V
VSS − 0.3 to VSS + 7.0
V
WO pin voltage
VWO
VWO / RO
IOUT
VSS − 0.3 to VOUT + 0.3 ≤ VSS + 7.0
VSS − 0.3 to VOUT + 0.3 ≤ VSS + 7.0
260
V
WO / RO pin voltage
Output current
V
mA
°C
°C
°C
Junction temperature
Operation ambient temperature
Storage temperature
Tj
−40 to +150
−40 to +125
−40 to +150
Topr
Tstg
Caution
The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
Thermal Resistance Value
Table 9
Item
Symbol
Condition
Board A
Min.
−
Typ.
104
74
Max.
Unit
−
−
−
−
−
°C/W
°C/W
°C/W
°C/W
°C/W
Board B
Board C
Board D
Board E
−
Junction-to-ambient thermal resistance*1
HSOP-8A
−
39
θJA
−
37
−
31
*1. Test environment: compliance with JEDEC STANDARD JESD51-2A
Remark Refer to " Power Dissipation" and "Test Board" for details.
6
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Recommended Operation Conditions
Table 10
Condition
Item
VIN pin voltage
Symbol
VIN
Min.
Typ.
Max.
36.0
Unit
V
−
When using autonomous
watchdog operation function*1
Detector block
Watchdog timer block
−
4.0
VOUT(S)
+ 1.0
1.0
−
−
36.0
V
−
−
−
−
−
−
−
−
−
V
V
VOUT pin voltage
VOUT
+VDET
2
Watchdog input voltage "H"*2
Watchdog input voltage "L"*2
Watchdog input "H" time*2
Watchdog input "L" time*2
VWIH
VWIL
thigh
tIow
V
−
−
5.0
0.8
V
VWI ≥ VWIH
VWI ≤ VWIL
−
−
μs
μs
5.0
dVWI
dt
V
WI = VWIL + (VWIH − VWIL) × 0.1
Slew rate*2
1
−
−
V/μs
to VWIL + (VWIH − VWIL) × 0.9
Watchdog input frequency
WEN pin input voltage "H"
WEN pin input voltage "L"
Input capacitor
fWI
Duty ratio 50%
−
2.0
0
−
−
−
−
−
−
0.2
VOUT(S)
0.8
−
−
10
MHz
V
VWENH
VWENL
CIN
S-19500 Series
S-19500 Series
V
−
−
−
2.2
2.2
−
μF
μF
Ω
CL
Output capacitor
ESR
Release delay time and monitoring
time adjustment capacitor*3
CDLY
−
1
10
3
47
−
−
−
−
−
nF
kΩ
kΩ
kΩ
kΩ
Watchdog activation threshold
current adjustment resistor*4
RWADJ,ext Connected to WADJ pin
−
Connected to
WO pin
RextW
S-19501 Series
S-19500 Series
S-19501 Series
−
External pull-up resistors for
output pins
Connected to
WO / RO pin
Connected to
RO pin
3
−
RextR
3
−
*1. Refer to "3. Watchdog timer block" in " Operation" for the autonomous watchdog operation function.
*2. When inputting a rising edge that satisfies the condition of Figure 4 to the WI pin, the watchdog timer detects a
trigger.
The signal input from the monitored object by the watchdog timer should satisfy the condition of Figure 4.
*3. Refer to "2. Release delay time and monitoring time adjustment capacitor (CDLY)" in " Selection of
External Parts" for the details.
*4. Refer to "3. Watchdog activation threshold current adjustment resistor (RWADJ,ext)" in " Selection of
External Parts" for the details.
VWI
tlow
thigh
VWIH
VWIL
dVWI
dt
t
Figure 4
Caution 1. Generally a series regulator may cause oscillation, depending on the selection of external parts.
Confirm that no oscillation occurs in the application for which the above capacitors are used.
2. Define the external pull-up resistance by sufficient evaluation including the temperature
characteristics under the actual usage conditions.
7
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
Electrical Characteristics
1. Regulator block
Table 11
(VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified)
Test
Circuit
Item
Symbol
VOUT(E)
Condition
Min.
Typ.
Max.
Unit
VOUT(S)
− 2.0%
200*7
VOUT(S)
+ 2.0%
−
Output voltage*1
Output current*2
VOUT(S)
V
IN = 13.5 V, IOUT = 30 mA
V
1
2
1
IOUT
−
VIN ≥ VOUT(S) + 1.0 V
IOUT = 30 mA, Ta = +25°C,
mA
mV
−
−
−
40
50
V
OUT(S) = 3.0 V to 5.3 V
Dropout voltage*3
Line regulation*4
Vdrop
IOUT = 100 mA, Ta = +25°C,
VOUT(S) = 3.0 V to 5.3 V
VOUT(S) + 1.0 V ≤ VIN ≤ 36.0 V,
IOUT = 30 mA, Ta = +25°C
VIN = 13.5 V, 100 μA ≤ IOUT ≤ 100 mA,
Ta = +25°C
120
200
0.10
mV
1
1
ΔVOUT1
ΔVIN • VOUT
0.02
%/V
Load regulation*5
Input voltage
−
4.0
−
20
−
40
36.0
−
ΔVOUT2
VIN
mV
V
1
−
3
−
V
IN = 13.5 V, IOUT = 30 mA,
Ripple rejection
|RR|
70
dB
f = 100 Hz, ΔVrip = 1.0 Vp-p
VIN = VOUT(S) + 1.0 V, VOUT = 1.2 V,
Ta = +25°C
Limit current*6
ILIM
260
30
500
60
700
mA
mA
2
2
Short-circuit current
Thermal shutdown
detection
Ishort
−
VIN = 13.5 V, VOUT = 0 V, Ta = +25°C
TSD
−
170
−
Junction temperature
°C
−
temperature
Thermal shutdown
release temperature
TSR
−
135
−
Junction temperature
°C
−
*1. The accuracy is guaranteed when the input voltage, output current, and temperature satisfy the conditions listed
above.
VOUT(S)
VOUT(E)
:
:
Set output voltage
Actual output voltage
*2. The output current when increasing the output current gradually until the output voltage has reached the value of
95% of VOUT(E)
.
*3. The difference between input voltage (VIN1) and the output voltage when decreasing input voltage (VIN) gradually
until the output voltage has dropped out to the value of 98% of output voltage (VOUT3).
Vdrop: VIN1 − (VOUT3 × 0.98)
V
OUT3: Output voltage when VIN = VOUT(S) + 1.0 V
*4. The dependency of the output voltage against the input voltage. The value shows how much the output voltage
changes due to a change in the input voltage while keeping output current constant.
*5. The dependency of the output voltage against the output current. The value shows how much the output voltage
changes due to a change in the output current while keeping input voltage constant.
*6. The current limited by overcurrent protection circuit.
*7. Due to limitation of the power dissipation, this value may not be satisfied. Attention should be paid to the power
dissipation when the output current is large.
This specification is guaranteed by design.
8
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
2. Detector block
Table 12
(VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified)
Test
Circuit
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
−VDET(S)
− 0.1
120
VOUT(S)
× 0.9
−VDET(S)
+ 0.1
−
Detection voltage*1
Hysteresis width*2
−
−
−
−VDET(S)
150
V
mV
V
−VDET
VHYS
4
4
4
Reset output voltage "H" VROH
Reset output voltage "L" VROL
−
−
VOUT ≥ 1.0 V, RextR ≥ 3 kΩ,
Connected to VOUT pin
VOUT pin internal resistance
−
0.2
0.4
V
4
RRO
IRO
trd
Reset pull-up resistor
Reset output current
Release delay time*3
Reset reaction time*4
20
3.0
11
−
30
−
18
−
45
−
25
50*5
kΩ
mA
ms
μs
−
5
4
4
V
RO = 0.4 V, VOUT = −VDET(S) − 0.1 V
CDLY = 47 nF
CDLY = 47 nF
trr
*1. The voltage at which the output of the RO pin turns to "L". The accuracy is guaranteed when the input voltage and
temperature satisfy the listed conditions above.
−VDET(S):Set detection voltage
−VDET
:
Actual detection voltage
*2. The voltage difference between the detection voltage (−VDET) and the release voltage (+VDET). The relation between the
actual output voltage (VOUT(E)) of the regulator block and the actual release voltage (+VDET = −VDET + VHYS) of the
detector block is as follows.
VOUT(E) > +VDET
*3. The time from when VOUT exceeds +VDET to when the RO pin output inverts (Refer to Figure 5). This value changes
according to the release delay time and monitoring time adjustment capacitor (CDLY).
The time period from when VOUT changes to +VDET → VOUT(S) to when VRO reaches VOUT / 2.
*4. The time from when VOUT falls below −VDET to when the RO pin output inverts (Refer to Figure 6). The time period from
when VOUT changes to VOUT(S) → −VDET to when VRO reaches VOUT / 2.
*5. The guaranteed value when the watchdog timer is deactivated. trr may shorten since the discharge operation of CDLY
may be performed while the watchdog timer is activated.
V
V
VOUT
VOUT
−VDET
+VDET
VRO
VRO
t
t
trd
Figure 5 Release Delay Time
trr
Figure 6 Reset Reaction Time
9
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
3. Watchdog timer block
3. 1 S-19500 Series (Product with WEN pin)
Table 13
(VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified)
Test
Circuit
Item
Symbol
IO,WDact
Condition
Min.
1.1
−
Typ.
Max.
1.9
−
Unit
mA
mA
mA
V
Watchdog activation threshold
current
Watchdog deactivation
threshold current
Watchdog activation hysteresis
current
Watchdog activation threshold
voltage
WADJ pin is open
1.5
6
IO,WDdeact WADJ pin is open
1.3
6
6
7
7
IO,WDhys
WADJ pin is open
0.1
1.28
−
0.2
−
VWADJ,th
−
1.35
750
1.45
IOUT
IWADJ
WADJ pin current ratio
VWADJ = 0 V, IOUT = 10 mA
−
−
WADJ pin internal resistor
RWADJ,int
−
CDLY = 47 nF
VOUT > −VDET, CDLY = 47 nF
Watchdog timer is activated
CDLY = 47 nF
−
490
38
650
54
845
72
kΩ
ms
−
6
Watchdog output pulse period*1 tWD,p
Watchdog output "L" time*2
tWD,L
6
11
16
ms
6
Watchdog trigger time*3
WEN pin input voltage "H"
WEN pin input voltage "L"
WEN pin input current "H"
WEN pin input current "L"
tWI,tr
VSH
VSL
ISH
32
2
−
−
−0.1
43
−
−
0.1
−
56
−
0.8
1
0.1
ms
V
V
μA
μA
6
8
8
8
8
−
VWEN = VOUT(S)
VWEN = 0 V
ISL
*1. The period of the continuous rectangular wave that appears in the WO / RO pin when the watchdog timer repeats
the detection of a time-out (Refer to Figure 7). It is calculated by using the following equation.
tWD,p = tWI,tr + tWD,L
*2. The time when the WO / RO pin continues "L" after the watchdog timer detects a time-out (Refer to Figure 7).
*3. The time from when the watchdog timer initiates the detection of a trigger signal to when a time-out is detected and
the WO / RO pin output changes to "L" (Refer to Figure 7). This value changes according to CDLY
.
This is the guaranteed value when VOUT increases to +VDET or higher and the discharge operation of CDLY due to the
detector operation is not performed. The discharge operation of CDLY may be performed when VOUT decreases to
−VDET or lower. At that time, tWI,tr, tWD,L and tWD,p may be changed.
VDLY
VDU
VDWL
t
tWI,tr
tWD,p
tWD,L
VWO / RO
t
Figure 7
10
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
3. 2 S-19501 Series (Product without WEN pin)
Table 14
(VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified)
Test
Circuit
Item
Symbol
IO,WDact
Condition
WADJ pin is open
WADJ pin is open
WADJ pin is open
−
Min.
1.1
−
Typ.
Max.
1.9
−
Unit
mA
mA
mA
V
Watchdog activation threshold
current
Watchdog deactivation
threshold current
Watchdog activation hysteresis
current
Watchdog activation threshold
voltage
1.5
6
IO,WDdeact
IO,WDhys
VWADJ,th
1.3
6
6
7
0.1
1.28
−
0.2
−
1.35
1.45
IOUT
IWADJ
WADJ pin current ratio
VWADJ = 0 V, IOUT = 10 mA
750
650
−
−
845
−
−
kΩ
V
7
−
WADJ pin internal resistor
Watchdog output voltage "H"
RWADJ,int
−
−
490
VOUT(S)
× 0.9
VWOH
11
RextW ≥ 3 kΩ,
Watchdog output voltage "L"
Watchdog pull-up resistor
Watchdog output current
VWOL
RWO
IWO
−
0.2
30
−
0.4
45
−
V
11
−
Connected to VOUT pin
VOUT pin internal resistance
VWO = 0.4 V,
20
3.0
kΩ
mA
12
VOUT = −VDET(S) − 0.1 V
Watchdog
period*1
output
pulse
tWD,p
CDLY = 47 nF
38
54
72
ms
6
VOUT > −VDET, CDLY = 47 nF
Watchdog timer is activated
CDLY = 47 nF
Watchdog output "L" time*2
Watchdog trigger time*3
tWD,L
tWI,tr
6
11
43
16
56
ms
ms
6
6
32
*1. The period of the continuous rectangular wave that appears in the WO pin when the watchdog timer repeats the
detection of a time-out (Refer to Figure 8). It is calculated by using the following equation.
tWD,p = tWI,tr + tWD,L
*2. The time when the WO pin continues "L" after the watchdog timer detects a time-out (Refer to Figure 8).
*3. The time from when the watchdog timer initiates the detection of a trigger signal to when a time-out is detected and
the WO pin output changes to "L" (Refer to Figure 8). This value changes according to CDLY
.
This is the guaranteed value when VOUT increases to +VDET or higher and the discharge operation of CDLY due to the
detector operation is not performed. The discharge operation of CDLY may be performed when VOUT decreases to
−VDET or lower. At that time, tWI,tr, tWD,L and tWD,p may be changed.
VDLY
VDU
VDWL
t
tWI,tr
tWD,p
tWD,L
VWO
t
Figure 8
11
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
4. Overall
Table 15
(VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified)
Test
Circuit
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
IOUT ≤ 5 mA, WADJ pin is open,
during watchdog timer activation,
WO pin = "H"
−
75
115
μA
9
IOUT = 50 mA, WADJ pin is open,
during watchdog timer activation,
WO pin = "H"
Current consumption
during operation
ISS1
−
−
−
80
100
60
125
150
95
μA
μA
μA
9
9
IOUT = 200 mA, WADJ pin is open,
during watchdog timer activation,
WO pin = "H"
Current consumption
during watchdog timer
deactivation
IOUT = 0 mA,
during watchdog timer deactivation
ISS2
10
12
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Test Circuits
1. S-19500 Series (Product with WEN pin)
+
+
VIN
WEN
WI
VOUT
VIN
WEN
WI
VOUT
A
A
WO / RO
WO / RO
+
+
V
V
WADJ
WADJ
DLY
DLY
VSS
VSS
Figure 9 Test Circuit 1
Figure 10 Test Circuit 2
VIN
WEN
WI
VOUT
VIN
WEN
WI
VOUT
RextR
WO / RO
WO / RO
+
+
+
RL
V
V
V
WADJ
WADJ
DLY
DLY
VSS
VSS
Figure 11 Test Circuit 3
Figure 12 Test Circuit 4
+
VIN
WEN
WI
VOUT
VIN
WEN
WI
VOUT
A
WO / RO
WO / RO
+
+
+
V
V
V
A
+
WADJ
WADJ
DLY
DLY
VRO
VSS
VSS
Figure 13 Test Circuit 5
Figure 14 Test Circuit 6
+
VIN
WEN
WI
VOUT
VIN
WEN
WI
VOUT
A
WO / RO
WO / RO
+
+
RL
V
V
A
+
WADJ
WADJ
DLY
DLY
+
+
V
A
VSS
VSS
+
V
VWADJ
Figure 15 Test Circuit 7
Figure 16 Test Circuit 8
+
+
VIN
WEN
WI
VOUT
A
VIN
WEN
WI
VOUT
A
WO / RO
WO / RO
+
V
WADJ
WADJ
DLY
DLY
VSS
VSS
+
A
WO / RO pin outputs "H".
Figure 17 Test Circuit 9
Figure 18 Test Circuit 10
13
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
2. S-19501 Series (Product without WEN pin)
+
+
VIN
VOUT
VIN
VOUT
RO
A
A
RO
WO
+
WO
+
WI
WI
V
V
WADJ
WADJ
DLY
DLY
VSS
VSS
Figure 19 Test Circuit 1
Figure 20 Test Circuit 2
VIN
VOUT
RO
VIN
VOUT
RO
RextR
WO
+
WO
+
WI
WI
+
RL
V
V
V
WADJ
WADJ
DLY
DLY
VSS
VSS
Figure 21 Test Circuit 3
Figure 22 Test Circuit 4
+
VIN
VOUT
RO
VIN
VOUT
A
RO
WO
WO
WI
+
WI
+
+
+
V
V
A
V
WADJ
WADJ
DLY
DLY
VRO
VSS
VSS
Figure 23 Test Circuit 5
Figure 24 Test Circuit 6
+
+
VIN
VOUT
RO
VIN
VOUT
RO
A
A
WO
WO
WI
WI
+
+
V
V
WADJ
WADJ
DLY
DLY
+
A
VSS
VSS
+
+
V
A
VWADJ
WO pin outputs "H".
Figure 25 Test Circuit 7
Figure 26 Test Circuit 8
+
A
VIN
VOUT
RO
VIN
VOUT
RO
WO
RextW
WO
WI
WI
+
V
+
WADJ
WADJ
DLY
DLY
V
VSS
VSS
Figure 27 Test Circuit 9
Figure 28 Test Circuit 10
14
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
VIN
VOUT
RO
WO
WI
+
V
+
WADJ
DLY
V
A
+
VSS
VWO
Figure 29 Test Circuit 11
15
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
Standard Circuits
1. S-19500 Series (Product with WEN pin)
Output
Input
VIN
VOUT
*5
RextR
WEN
WO / RO
*2
CL
*1
CIN
WI
WADJ
DLY
*3
*4
CDLY
RWADJ,ext
VSS
Single GND
GND
Figure 30
2. S-19501 Series (Product without WEN pin)
Output
Input
VIN
VOUT
*5
RextR
RO
WO
*2
*5
CL
*1
RextW
CIN
WI
WADJ
DLY
*3
*4
CDLY
RWADJ,ext
VSS
Single GND
GND
Figure 31
*1.
*2. CL is a capacitor for stabilizing the output. A ceramic capacitor of 2.2 μF or more can be used.
*3. DLY is the release delay time and monitoring time adjustment capacitor.
CIN is a capacitor for stabilizing the input.
C
*4. RWADJ,ext is the watchdog activation threshold current adjustment resistor.
*5. RextR and RextW are the external pull-up resistors for the reset output pin and the watchdog output pin,
respectively. Connection of the external pull-up resistor is not absolutely essential since the
S-19500/19501 Series has a built-in pull-up resistor.
Caution The above connection diagram and constants will not guarantee successful operation. Perform
thorough evaluation using an actual application to set the constants.
16
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Selection of External Parts
1. Input and output capacitors (CIN, CL)
The S-19500/19501 Series requires CL between the VOUT pin and the VSS pin for phase compensation. Operation
is stabilized by a ceramic capacitor with an output capacitance of 2.2 μF or more over the entire temperature range.
When using an OS capacitor, a tantalum capacitor, or an aluminum electrolytic capacitor, the capacitance must be
2.2 μF or more, and the ESR must be 10 Ω or less.
The values of output overshoot and undershoot, which are transient response characteristics, vary depending on the
value of the output capacitor.
The required value of capacitance for the input capacitor differs depending on the application.
Caution Define the capacitance of CIN and CL by sufficient evaluation including the temperature
characteristics under the actual usage conditions.
2. Release delay time and monitoring time adjustment capacitor (CDLY
)
In the S-19500/19501 Series, the release delay time and monitoring time adjustment capacitor (CDLY) is necessary
between the DLY pin and the VSS pin to adjust the release delay time (trd) of the detector and the monitoring time of
the watchdog timer.
The set release delay time (trd(S)), the set watchdog trigger time (tWI,tr(S)), the set watchdog output "L" time (tWD,L(S)
and the set watchdog output pulse period (tWD,p(S)) are calculated by using following equations, respectively.
)
The release delay time (trd), the watchdog trigger time (tWI,tr), the watchdog output "L" time (tWD,L) and the watchdog
output pulse period (tWD,p) at the time of the condition of CDLY = 47 nF are shown in " Electrical Characteristics".
C
DLY [nF]
rd(S) [ms] = trd [ms] ×
47 [nF]
t
C
DLY [nF]
tWI,tr(S) [ms] = tWI,tr [ms] ×
tWD,L(S) [ms] = tWD,L [ms] ×
47 [nF]
C
DLY [nF]
47 [nF]
tWD,p(S) [ms] = tWI,tr(S) [ms] + tWD,L(S) [ms]
Caution 1. The above equations will not guarantee successful operation. Perform thorough evaluation including
the temperature characteristics using an actual application to set the constants.
2. Mounted board layout should be made in such a way that no current flows into or flows from the DLY
pin since the impedance of the DLY pin is high, otherwise correct delay time and monitoring time may
not be provided.
3. Select CDLY whose leakage current can be ignored against the built-in constant current (5.0 μA typ.).
The leakage current may cause deviation in delay time and monitoring time. When the leakage
current is larger than the built-in constant current, no release takes place.
4. Deviations of CDLY are not included in the equations mentioned above. Be sure to determine the
constants considering the deviation of CDLY to be used.
17
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
3. Watchdog activation threshold current adjustment resistor (RWADJ,ext
)
In the S-19500/19501 Series, the watchdog activation threshold current adjustment resistor (RWADJ,ext) can be
connected between the WADJ pin and the VSS pin to adjust the watchdog timer activation threshold current.
The set watchdog activation threshold current (IO,WDact(S)), the set watchdog deactivation threshold current
(IO,WDdeact(S)) and the set watchdog activation hysteresis current (IO,WDhys(s)) are calculated by using following
equations, respectively.
The watchdog activation threshold current (IO,WDact), the watchdog deactivation threshold current (IO,WDdeact) and the
watchdog activation hysteresis current (IO,WDhys) when the WADJ pin is open are shown in " Electrical
Characteristics".
RWADJ,int [kΩ]
I
I
O,WDact(S) [mA] = IO,WDact [mA] × 1 +
RWADJ,ext [kΩ]
RWADJ,int [kΩ]
RWADJ,ext [kΩ]
O,WDdeact(S) [mA] = IO,WDdeact [mA] × 1 +
IO,WDhys(S) [mA] = IO,WDact(S) [mA] − IO,WDdeact(S) [mA]
Caution 1. The above equations will not guarantee successful operation. Perform thorough evaluation including
the temperature characteristics using an actual application to set the constants.
2. Mounted board layout should be made in such a way that no current flows into or flows from the
WADJ pin since the impedance of the WADJ pin is high, otherwise correct IO,WDact and IO,WDdeact may
not be provided.
3. Refer to "3. 2 Autonomous watchdog operation function (Output current detection circuit)" in
" Operation" for the details.
18
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Operation
1. Regulator block
1. 1 Basic operation
Figure 32 shows the block diagram of the regulator in the S-19500/19501 Series.
The error amplifier compares the reference voltage (Vref) with feedback voltage (Vfb), which is the output voltage
resistance-divided by feedback resistors (Rs and Rf). It supplies the gate voltage necessary to maintain the
constant output voltage which is not influenced by the input voltage and temperature change, to the output
transistor.
VIN
*1
Current
supply
Error
amplifier
VOUT
−
+
Vref
Rf
Vfb
Reference voltage
circuit
Rs
VSS
*1. Parasitic diode
Figure 32
1. 2 Output transistor
In the S-19500/19501 Series, a low on-resistance P-channel MOS FET is used as the output transistor.
Be sure that VOUT does not exceed VIN + 0.3 V to prevent the voltage regulator from being damaged due to
reverse current flowing from the VOUT pin through a parasitic diode to the VIN pin, when the potential of VOUT
became higher than VIN.
19
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
1. 3 Overcurrent protection circuit
The S-19500/19501 Series includes an overcurrent protection circuit which having the characteristics shown in
"1. 1 Output voltage vs. Output current (When load current increases) (Ta = +25°C)" of "1. Regulator
block" in " Characteristics (Typical Data)", in order to limit an excessive output current and overcurrent of the
output transistor due to short-circuiting between the VOUT pin and the VSS pin. The current when the output pin
is short-circuited (Ishort) is internally set at 60 mA typ., and the load current when short-circuiting is limited based
on this value. The output voltage restarts regulating if the output transistor is released from overcurrent status.
Caution This overcurrent protection circuit does not work as for thermal protection. If this IC long keeps
short circuiting, pay attention to the conditions of input voltage and load current so that, under
the usage conditions including short circuit, the loss of the IC will not exceed power dissipation.
1. 4 Thermal shutdown circuit
The S-19500/19501 Series has a thermal shutdown circuit to limit self-heating. When the junction temperature
rises to 170°C typ., the thermal shutdown circuit operates to stop regulating. After that, when the junction
temperature drops to 135°C typ., the thermal shutdown circuit is released to restart regulating.
Due to self-heating of the S-19500/19501 Series, if the thermal shutdown circuit starts operating, it stops
regulating so that the output voltage drops. For this reason, self-heating is limited and the IC's temperature drops.
When the temperature drops, the thermal shutdown circuit is released to restart regulating, thus self-heating is
generated again due to rising of the output voltage. Repeating this procedure makes the waveform of the VOUT
pin output into a pulse-like form. This phenomenon continues unless decreasing either or both of the input
voltage and the output current in order to reduce the internal power consumption, or decreasing the ambient
temperature. Note that the product may suffer physical damage such as deterioration if the above phenomenon
occurs continuously.
Table 16
Thermal Shutdown Circuit
Detect: 170°C typ.*1
Release: 135°C typ.*1
VOUT Pin Voltage
VSS level
Set value
*1. Junction temperature
20
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
2. Detector block
2. 1 Basic operation
(1) When the output voltage (VOUT) of the regulator is release voltage (+VDET) of the detector or higher, the Nch
transistor (N1 and N2) are turned off and "H" is output to the RO pin. Since the Pch transistor (P1) is turned on,
RB • VOUT
the input voltage to the comparator (C1) is
.
RA + RB
(2) Even if VOUT decreases to +VDET or lower, "H" is output to the RO pin when VOUT is the detection voltage (−VDET
)
or higher. When VOUT decreases to −VDET (point A in Figure 34) or lower, N1 which is controlled by C1 is turned
on, and CDLY is discharged. If the DLY pin voltage (VDLY) decreases to the lower reset timing threshold voltage
(VDRL) or lower, N2 of output stage of C2 is turned on, and then "L" is output to the RO pin. At this time, P1 is
RB • VOUT
turned off, and the input voltage to C1 is
.
RA + RB + RC
(3) If VOUT further decreases to the IC's minimum operation voltage or lower, the RO pin output is "H".
(4) When VOUT increases to the IC's minimum operation voltage or higher, "L" is output to the RO pin. Moreover,
even if VOUT exceeds −VDET, the output is "L" when VOUT is lower than +VDET
.
(5) When VOUT increases to +VDET (point B in Figure 34) or higher, N1 is turned off and CDLY is charged. N2 is
turned off if VDLY increases to the upper timing threshold voltage (VDU) or higher, and "H" is output to the RO
pin.
VOUT
P1
RC
RA
C1
+
−
RO
C2
−
+
N1
N2
Reference
voltage circuit
RB
VSS
DLY
CDLY
Figure 33 Operation of Detector Block
(2) (3)
A
(4)
B
(5)
VOUT
Release voltage (+VDET
Detection voltage (−VDET
(1)
)
Hysteresis width
(VHYS
)
)
Minimum operation voltage
VSS
VOUT
RO pin output
VSS
trd
Figure 34 Timing Chart of Detector Block
21
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
2. 2 Delay circuit
When the output voltage (VOUT) of the regulator rises under the status that "L" is output to the RO pin, the reset
release signal is output to the RO pin later than when VOUT becomes +VDET. The release delay time (trd) changes
according to CDLY. Refer to "2. Release delay time and monitoring time adjustment capacitor (CDLY)" in "
Selection of External Parts" for details.
In addition, if the time from when VOUT decreases to −VDET or lower to when VOUT increases to +VDET or higher is
significantly shorter compared to the length of the reset reaction time (trr), VDLY may not decrease to VDRL or lower.
In that case, "H" output remains in the RO pin. Refer to "2. 9 Reset reaction time vs. Release delay time and
monitoring time adjustment capacitor" in " Characteristics (Typical Data)" for the details.
Caution Since trd depends on the charge time of CDLY, trd may be shorter than the set value if the charge
operation is initiated under the condition that a residual electric charge is left in CDLY
.
2. 3 Output circuit
Since the RO pin has a built-in resistor to pull up to the VOUT pin internally, the RO pin can output a signal
without an external pull-up resistor
Do not connect to the pin other than VOUT pin when connecting an external pull-up resistor.
In the S-19500 Series, the reset output pin and the watchdog output pin are prepared as the WO / RO pin.
The output level of the WO / RO pin is applied by the AND logic of the reset output pin and the watchdog output
pin.
Example: When the WO pin is "L" and the RO pin is "H", the WO / RO pin is "L".
In the S-19501 Series, the reset output pin is prepared as the RO pin.
Caution Define the external pull-up resistance by sufficient evaluation including the temperature
characteristics under the actual usage conditions.
22
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
3. Watchdog timer block
3. 1 Basic operation
The watchdog timer operates as follows during monitoring operation.
(1) When the WO pin outputs "H", CDLY is discharged by an internal constant current source, and the DLY pin
voltage (VDLY) decreases. The watchdog timer detects a trigger and the CDLY is charged by an internal constant
current source if a rising edge is input to the WI pin from a monitored object by the watchdog timer, and then
VDLY rises. The discharge operation is restarted if VDLY reaches the upper timing threshold voltage (VDU), and
V
DLY decreases again. By inputting a rising edge to the WI pin again during the discharge operation, the similar
operation is repeated. At this time, the WO pin outputs "H" continuously.
(2) The watchdog timer does not detect a trigger if the rising edge is not input to the WI pin from a monitored object
by the watchdog timer when the CDLY is discharged and VDLY decreases. The WO pin outputs "L" if the
discharge operation continues not detecting a trigger when VDLY reaches the lower watchdog timing threshold
voltage (VDWL). This operation is called the time-out detection.
(3) After the time-out detection, CDLY is charged while the WO pin outputs "L", and VDLY increases. The WO pin
outputs "H" and restarts the discharge operation if VDLY reaches VDU
.
(4) By the operation of (3), a monitored object by the watchdog timer is reset. If a rising edge is input to the WI pin
again, the operation similar to (1) is continued since the watchdog timer detects a trigger.
(5) After the operation of (3), if the status in which a rising edge is not input to the WI pin continues, the watchdog
timer repeats the operation of (5) → (3) → (5) →...
VIN
Output current
detection circuit
WADJ
VOUT
WDT enable circuit
WEN
WI
Charge-
discharge
control
WDT input circuit
WO
circuit
−
+
Reference
voltage circuit
VSS
DLY
CDLY
Figure 35
23
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
The time period from when the watchdog timer detects a trigger to when it detects a time-out (tWD,TO) is indicated
as the following expression. Figure 36 shows a timing chart of the watchdog timer.
tWI,tr ≤ tWD,TO ≤ tWD,p
(1)
(2), (5)
(3)
(4)
VDLY
VDU
VDWL
t
t
tWD,TO
VWI
tWI,tr
VWO
t
Figure 36
Regardless of the status of the watchdog timer, the capacitance of CDLY could be discharged by the detector
operation. Even if watchdog timer detects a trigger of signal input to the WI pin, the WO pin outputs "L" when VDLY
reaches VDWL. After that, the watchdog timer restarts the monitoring operation if the WO pin outputs "H" when VDLY
reaches VDU
.
3. 2 Autonomous watchdog operation function (Output current detection circuit)
Since the S-19500/19501 Series has a built-in output current detection circuit, the watchdog timer operates
autonomously. When using the autonomous watchdog operation function, the current flows in the load is detected
by the output current of the regulator, the watchdog timer initiates the activation when the output current is the
watchdog activation threshold current (IO,WDact) or more, the watchdog timer is deactivated when the output current
is the watchdog deactivation threshold current (IO,WDdeact) or less.
Table 17 shows the connection of WADJ pin depending on the usage of the watchdog timer.
In the S-19500 Series, the watchdog timer is deactivated regardless of the connection of the WADJ pin if the
watchdog timer is set to Disable by the WEN pin.
Table 17
Usage of Watchdog Timer
Watchdog timer is not in use
Connection of WADJ Pin
Connect to the VSS pin
Status of WADJ Pin
"L"
Connect to the VOUT pin via a 270 kΩ
Watchdog timer is always activated
"H"
(recommended) resistor*1
Watchdog timer turns on and off
autonomously depending on the load current
(Autonomous watchdog operation function)
Open or connect to the VSS pin via an "H": IOUT > IO,WDact
external resistor*2
"L": IOUT < IO,WDdeact
*1. Even if the WADJ pin is directly connected to the VOUT pin, the watchdog timer is always activated. Note that the
current consumption will increase by as many resistors as unconnected.
*2. Refer to "3. Watchdog activation threshold current adjustment resistor (RWADJ,ext)" in " Selection of
External Parts" for details.
24
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Depending on the output current (IOUT) of the regulator, the watchdog timer monitoring activation is as follows.
(1)When IOUT of the regulator is the watchdog activation threshold current (IO,WDact) or more, the WADJ pin voltage
(VWADJ) is higher than the reference voltage (Vref), and the output of the comparator (C1) is "H". At this time, the
watchdog timer initiates the monitoring activation.
(2)When IOUT decreases to the watchdog deactivation threshold current (IO,WDdeact) (point A in Figure 38) or less,
VWADJ decreases to Vref or less and the output of C1 is "L". At this time, the watchdog timer deactivates the
monitoring. Even if IOUT increases, the watchdog timer continues the monitoring deactivation when IOUT is within
less than IO,WDact
(3)If IOUT further increases to IO,WDact (point B in Figure 38) or more, VWADJ increases to Vref or higher and the
output of C1 is "H". And then, the watchdog timer initiates the monitoring activation.
VIN
VOUT
+
−
Reference voltage
circuit
WEN
WDT
circuit
C1
WADJ
VWADJ
+
−
Reference
Vref
voltage
circuit
RWADJ,ext
RWADJ,int
VSS
Figure 37 Operation of Output Current Detection Circuit
(2)
(3)
(1)
IOUT
Watchdog activation threshold current (IO,WDact
B
)
Watchdog activation
hysteresis current
A
Watchdog deactivation threshold current (IO,WDdeact
)
(IO,WDhys
)
0 mA
WDT
WDT
WDT
monitoring
deactivation
monitoring
activation
monitoring
activation
Figure 38 Autonomous Watchdog Operation Function
Caution
Remark
Due to detecting IOUT of the regulator, current flows through the resistors connected to the WADJ pin
(RWADJ,ext and RWADJ,int). Therefore, the WADJ pin voltage (VWADJ) may fluctuate since the current
flowing through RWADJ,ext and RWADJ,int also changes in the same way if the output current changes
transiently. VWADJ at that time should be evaluated with the actual device.
I
O,WDact, IO,WDdeact and IO,WDhys can be adjusted by connecting RWADJ,ext to the WADJ pin. Refer to
"3. Watchdog activation threshold current adjustment resistor (RWADJ,ext)" in " Selection of External
Parts" for the detail.
25
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
3. 3 Watchdog enable circuit (only S-19500 Series)
When inputting "L" to the WEN pin, the watchdog timer becomes Disable and stops the output current detection
operation and monitoring activation. When inputting "H" to the WEN pin, the watchdog timer becomes Enable.
The watchdog timer monitoring activation is performed depending on the connection of the WADJ pin.
The WEN pin is pulled down internally by the constant current source. For this reason, the WEN pin is set to "L"
when using the WEN pin in the floating status, and the watchdog timer becomes Disable. However, in order that
the watchdog timer become Disable certainly, connect the WEN pin to GND so that "L" is input to the WEN pin
certainly, since the impedance of the WEN pin becomes high when using the WEN pin in the floating status.
In order to fix the watchdog timer to Enable, connect the WEN pin to the VOUT pin so that "H" is input to the WEN
pin.
Table 18 and Table 19 show the relation between each pin status and the watchdog timer.
3. 4 Watchdog input circuit
By inputting a rising edge to the WI pin, the watchdog timer detects a trigger. The S-19500/19501 Series has a
built-in watchdog input circuit which contains a band pass filter in the WI pin, and detects a rising edge which
satisfies an input condition as a trigger signal. Refer to *2 of Table 10 and Figure 4 in " Recommended
Operation Conditions".
During the operation of the watchdog timer, a trigger is detected only when the DLY pin voltage is in VDU to VDWL
and while the discharge operation of CDLY is being performed. Refer to "3. Watchdog timer block" in
" Operation" for details. The signal input from a monitored object by the watchdog timer to the watchdog timer
should be input with a time interval which is sufficiently shorter than the watchdog trigger time (tWI,tr).
Table 18 and Table 19 show the relation between each pin status and the watchdog timer.
Caution Under a noisy environment, the watchdog input circuit may detect the noise as a trigger signal.
Sufficiently evaluate with the actual application to confirm that a trigger is detected only in the
intended signal.
3. 5 Watchdog output circuit
Since the WO pin has a built-in resistor to pull up to the VOUT pin internally, the WO pin can output a signal
without an external pull-up resistor
Do not connect to the pin other than VOUT pin when connecting an external pull-up resistor.
In the S-19500 Series, the reset output pin and the watchdog output pin are prepared as the WO / RO pin.
The output level of the WO / RO pin is applied by the AND logic of the reset output pin and the watchdog output
pin.
Example: When the WO pin is "L" and the RO pin is "H", the WO / RO pin is "L".
26
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
3. 6 Each pin status and output logic
Table 18 and Table 19 show each pin status and output logic in truth table.
3. 6. 1 S-19500 Series (Product with WEN pin)
Table 18
Each Pin Status
Output Logic
WO / RO
Status
WADJ
WEN Input
WI Input
VOUT Output
Status*1
Output
WDT monitoring activation
WDT abnormal detection
WDT monitoring deactivation
WDT Disable
"H"
"H"
Trigger
≥ +VDET
≥ +VDET
≥ +VDET
≥ +VDET
≤ −VDET
"H"
"L"
"H"
"H"
"L"
"H"
"H"
No trigger
Don't care
Don't care
Don't care
"H"
"L"
"L"
Don't care
Don't care
Low voltage detection
Don't care
*1. Refer to Table 17 for the status of WADJ pin.
3. 6. 2 S-19501 Series (Product without WEN pin)
Table 19
Each Pin Status
Output Logic
WO Output RO Output
Status
WADJ
Status*1
WI Input
VOUT Output
WDT monitoring activation
WDT abnormal detection
WDT monitoring deactivation
"H"
Trigger
≥ +VDET
≥ +VDET
≥ +VDET
≤ −VDET
≤ −VDET
"H"
"L"
"H"
"L"
"H"
"H"
"H"
"H"
"L"
"L"
"H"
"L"
"H"
"L"
No trigger
Don't care
Don't care
Don't care
Low voltage detection
*1. Refer to Table 17 for the status of WADJ pin.
27
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
Timing Charts
1. S-19500 Series (Product with WEN pin)
VIN
+VDET
VOUT
VWADJ
VWEN
1/fWI
VWI
VDU
VDWL
VDLY
VWO / RO
tWI,tr
tWD,L
trd
t
tWD,p
Figure 39 Example of Watchdog Timer Monitoring Operation 1
VIN
+VDET
VOUT
VWADJ
VWEN
VWI
1/fWI
VDU
VDWL
VDLY
VWO / RO
tWI,tr
tWD,L
trd
t
tWD,p
Figure 40 Example of Watchdog Timer Monitoring Operation 2
28
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
VIN
≪trr
+VDET
−VDET
VOUT
VWADJ
VWEN
VWI
VDU
VDLY
VDRL
VWO / RO
trd
Figure 41 Example of Detector Operation
t
trr
29
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
2. S-19501 Series (Product without WEN pin)
VIN
+VDET
VOUT
VWADJ
1/fWI
VWI
VDLY
VRO
VDU
VDWL
VWO
tWI,tr
tWD,L
trd
t
tWD,p
Figure 42 Example of Watchdog Timer Monitoring Operation
VIN
≪trr
+VDET
−VDET
VOUT
VWADJ
VWI
VDU
VDLY
VDRL
VRO
VWO
trd
t
trr
Figure 43 Example of Detector Operation
30
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Precautions
• Wiring patterns for the VIN pin, the VOUT pin and GND should be designed so that the impedance is low. When
mounting an output capacitor between the VOUT pin and the VSS pin (CL) and an input capacitor between the VIN
pin and the VSS pin (CIN), the distance from the capacitors to these pins should be as short as possible.
• Note that generally the output voltage may increase when a series regulator is used at low load current (0.1 mA or
less).
• Note that generally the output voltage may increase due to the leakage current from an output transistor when a
series regulator is used at high temperature.
• Generally a series regulator may cause oscillation, depending on the selection of external parts. The following
conditions are recommended for the S-19500/19501 Series. However, be sure to perform sufficient evaluation under
the actual usage conditions for selection, including evaluation of temperature characteristics. Refer to "4. Example
of equivalent series resistance vs. Output current characteristics (Ta = −40°C to +125°C)" in " Reference
Data" for the equivalent series resistance (RESR) of the output capacitor.
Input capacitor (CIN):
Output capacitor (CL):
2.2 μF or more
2.2 μF or more
• In a series regulator, generally the values of overshoot and undershoot in the output voltage vary depending on the
variation factors of power-on, power supply fluctuation and load fluctuation, or output capacitance.
Determine the conditions of the output capacitor after sufficiently evaluating the temperature characteristics of
overshoot or undershoot in the output voltage with the actual device.
• The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitance is
small or an input capacitor is not connected.
• Overshoot may occur in the output voltage momentarily if the voltage is rapidly raised at power-on or when the
power supply fluctuates. Sufficiently evaluate the output voltage at that time with the actual device.
• If the VOUT pin is steeply shorted with GND, a negative voltage exceeding the absolute maximum ratings may occur
to the VOUT pin due to resonance of the wiring inductance and the output capacitance in the application. The
negative voltage can be limited by inserting a protection diode between the VOUT pin and the VSS pin or inserting a
series resistor to the output capacitor.
• The application conditions for the input voltage, the output voltage, and the load current should not exceed the power
dissipation.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
• In determining the output current, attention should be paid to the output current value specified in Table 11 in
" Electrical Characteristics" and footnote *7 of the table.
• ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement by products
including this IC of patents owned by a third party.
31
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
Characteristics (Typical Data)
1. Regulator block
1. 1 Output voltage vs. Output current (When load current increases) (Ta = +25°C)
1. 1. 1 VOUT = 3.3 V
1. 1. 2 VOUT = 5.0 V
4.0
6.0
5.0
4.0
3.0
3.0
2.0
V
IN = 3.8 V
V
IN = 5.5 V
VIN = 13.5 V
VIN = 13.5 V
V
IN = 4.3 V
VIN = 6.0 V
2.0
1.0
0.0
1.0
0.0
0
100 200 300 400 500 600
0
100 200 300 400 500 600
IOUT [mA]
IOUT [mA]
1. 2 Output voltage vs. Input voltage (Ta = +25°C)
1. 2. 1 VOUT = 3.3 V
1. 2. 2 VOUT = 5.0 V
4.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
3.0
I
OUT = 1 mA
I
I
OUT = 1 mA
2.0
1.0
0.0
I
OUT = 10 mA
OUT = 10 mA
I
OUT = 30 mA
I
I
OUT = 30 mA
I
OUT = 100 mA
OUT = 100 mA
0
3
6
9
12
15
18
0
3
6
T
9
12
15
18
V
IN [V]
V
IN [V]
1. 3 Dropout voltage vs. Output current
1. 3. 1
V
OUT = 3.3 V
1. 3. 2 VOUT = 5.0 V
200
200
T
j
=
+
150°C
j
= +150°C
150
100
50
150
T
j
=
+
125°C
25°C
T = +125°C
j
Tj
=
+
100
50
0
T
j
=
+
25°C
T
j
=
−
40°C
T
j
=
−
40°C
0
0
50
100
150
200
0
50
100
150
200
IOUT [mA]
IOUT [mA]
1. 4 Dropout voltage vs. Junction temperature
1. 4. 1
V
OUT = 3.3 V
1. 4. 2 VOUT = 5.0 V
100
100
I
OUT = 100 mA
I
OUT = 100 mA
80
60
40
20
0
80
60
40
20
0
I
OUT = 30 mA
IOUT = 30 mA
−40 −25
0
25 50 75 100 125 150
−40 −25
0
25 50 75 100 125 150
[°C]
Tj
[°C]
Tj
32
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
1. 5 Output voltage vs. Junction temperature
1. 5. 1
V
OUT = 3.3 V
1. 5. 2 VOUT = 5.0 V
V
IN = 13.5 V
VIN = 13.5 V
3.6
3.5
3.4
3.3
3.2
3.1
3.0
5.3
5.2
5.1
5.0
4.9
4.8
4.7
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
Tj
Tj
1. 6 Ripple rejection (Ta = +25°C)
1. 6. 1 VOUT = 3.3 V
1. 6. 2
V
OUT = 5.0 V
VIN = 13.5 V, CL = 2.2 μF
VIN = 13.5 V, CL = 2.2 μF
100
80
60
40
20
0
100
80
60
40
20
0
I
OUT = 1 mA
OUT = 30 mA
OUT = 100 mA
I
OUT = 1 mA
OUT = 30 mA
IOUT = 100 mA
I
I
I
10
100
1k
10k
100k
1M
10
100
1k
10k
100k
1M
Frequency [Hz]
Frequency [Hz]
2. Detector block
2. 1 Detection voltage, Release voltage vs. Junction temperature
2. 1. 1 −VDET = 2.6 V
2. 1. 2 −VDET = 4.7 V
3.2
5.3
3.0
2.8
2.6
2.4
2.2
5.1
4.9
4.7
4.5
4.3
+VDET
−VDET
+VDET
−VDET
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
T
j
T
j
2. 2 Hysteresis width vs. Junction temperature
2. 2. 1 −VDET = 2.6 V
2. 2. 2 −VDET = 4.7 V
300
300
250
200
150
100
50
250
200
150
100
50
0
0
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
Tj
Tj
33
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
2. 3 Nch transistor output current vs. VDS
2. 3. 1 −VDET = 2.6 V
2. 3. 2 −VDET = 4.7 V
100
200
Ta =
+
25°C
Ta = +25°C
80
60
40
20
0
160
Ta =
−
40°C
Ta =
−
40°C
120
80
40
0
Ta = +125°C
Ta =
1.5
+
125°C
0.0
0.5
1.0
2.0
2.5
3.0
0
1
2
3
4
5
V
DS [V]
V
Ta =
2
DS [V]
2. 4 Nch transistor output current vs. Output voltage
2. 4. 1 −VDET = 2.6 V
2. 4. 2 −VDET = 4.7 V
VDS = 0.4 V
VDS = 0.4 V
20
30
25
20
Ta = +25°C
+
25°C
15
10
5
Ta = −40°C
Ta =
−
40°C
15
10
5
Ta = +125°C
Ta =
1.5
+
125°C
0
0
0.0
0.5
1.0
2.0 2.5
3.0
0
1
3
4
5
V
OUT [V]
VOUT [V]
2. 5 Nch transistor output voltage vs. Output voltage
2. 5. 1 −VDET = 2.6 V
2. 5. 2 −VDET = 4.7 V
VDS = 0.4 V
VDS = 0.4 V
4
6
5
4
3
3
2
T = +150°C
j
Tj = +150°C
Tj =
Tj =
Tj =
+
125°C
25°C
40°C
T
j
=
+
=
125°C
25°C
2
1
0
1
0
+
T
j
+
−
T
j
=
−
40°C
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
1
2
3
4
5
V
OUT [V]
VOUT [V]
Remark VDS: Drain-to-source voltage of the output transistor
34
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
2. 6 Release delay time vs. Junction temperature
2. 6. 1 −VDET = 2.6 V
2. 6. 2 −VDET = 4.7 V
25
25
20
15
10
5
20
15
10
5
0
0
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
Tj
Tj
2. 7 Release delay time vs. Release delay time and monitoring time adjustment capacitor
2. 7. 1 −VDET = 2.6 V
1000
2. 7. 2 −VDET = 4.7 V
1000
T
j
=
+
150°C
T
j
=
+150°C
100
10
1
100
10
1
T
j
=
+
125°C
Tj
=
+
125°C
Tj
=
+
25°C
Tj = +25°C
T
j
=
−
40°C
T
j
=
−
40°C
0.1
0.1
1
10
100
1000
1
10
100
1000
CDLY [nF]
CDLY [nF]
2. 8 Reset reaction time vs. Junction temperature
2. 8. 1 −VDET = 2.6 V
2. 8. 2 −VDET = 4.7 V
25
25
20
15
10
5
20
15
10
5
0
0
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
T
j
T
j
2. 9 Reset reaction time vs. Release delay time and monitoring time adjustment capacitor
2. 9. 1 −VDET = 2.6 V
100
2. 9. 2 −VDET = 4.7 V
100
T
j
=
+150°C
T
j
=
+150°C
T = +125°C
j
T = +125°C
j
10
1
10
1
Tj = +25°C
T = +25°C
j
Tj
=
−
40°C
Tj
=
−
40°C
100
1
10
1000
1
10
100
1000
CDLY [nF]
CDLY [nF]
35
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
3. Watchdog timer block
3. 1 Watchdog trigger time vs. Junction temperature
3. 1. 1
V
OUT = 3.3 V
3. 1. 2
VOUT = 5.0 V
VIN = 13.5 V
VIN = 13.5 V
60
50
40
30
20
10
0
60
50
40
30
20
10
0
−40 −25
0
25 50 75 100 125 150
−40 −25
0
25 50 75 100 125 150
[°C]
T
j
[°C]
T
j
3. 2 Watchdog trigger time vs. Release delay time and monitoring time adjustment capacitor
3. 2. 1
V
OUT = 3.3 V
3. 2. 2
VOUT = 5.0 V
VIN = 13.5 V
VIN = 13.5 V
10000
1000
100
10
10000
1000
100
10
+
°C
°C
+
°C
+
°C
+
°C
+
°C
+
°C
1
1
−
−
°C
0.1
0.1
1
10
100
1000
1
10
100
1000
C
DLY [nF]
C
DLY [nF]
3. 3 Charge current, discharge current vs. Junction temperature
3. 3. 1
V
OUT = 3.3 V
3. 3. 2
VOUT = 5.0 V
VIN = 13.5 V
VIN = 13.5 V
8
8
I
D,cha
I
D,cha
6
4
2
0
6
4
2
0
I
D,dcha
I
D,dcha
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
T
j
T
j
3. 4 Upper timing threshold voltage, lower watchdog timing threshold voltage, lower reset timing threshold voltage vs. Junction temperature
3. 4. 1 VOUT = 3.3 V
3. 4. 2
VOUT = 5.0 V
VIN = 13.5 V
VIN = 13.5 V
2.5
2.0
1.5
1.0
0.5
0.0
2.5
2.0
1.5
1.0
0.5
0.0
V
DU
V
DU
V
DWL
V
DWL
V
DRL
VDRL
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
T
j
T
j
36
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
3. 5 Watchdog activation threshold current, watchdog deactivation threshold current vs. Junction temperature
3. 5. 1 VOUT = 3.3 V
3. 5. 2 VOUT = 5.0 V
V
IN = 13.5 V
VIN = 13.5 V
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
I
O,WDact
I
O,WDact
I
O,WDdeact
I
O,WDdeact
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
T
j
T
j
3. 6 Watchdog activation threshold current, Watchdog deactivation threshold current
vs. Watchdog activation threshold current adjustment resistor (Ta = +25°C)
3. 6. 1 VOUT = 3.3 V
3. 6. 2 VOUT = 5.0 V
V
IN = 13.5 V
V
IN = 13.5 V
100
80
100
80
60
60
I
O,WDact
O,WDdeact
I
O,WDact
O,WDdeact
40
20
0
40
20
0
I
I
10
100
R
1000
10000
10
100
R
1000
10000
WADJ,ext [kΩ]
WADJ,ext [kΩ]
37
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
4. Overall
4. 1 Current consumption during operation vs. Input voltage
4. 1. 1 VOUT = 3.3 V, −VDET = 2.6 V
When watchdog timer is deactivated
4. 1. 2 VOUT = 5.0 V, −VDET = 4.7 V
When watchdog timer is deactivated
300
250
200
150
100
50
300
250
200
150
100
50
−
°C
+
−
°C
+
°C
+
°C
+
°C
+
°C
+
°C
°C
0
0
0
3
6
9
12
15
18
0
3
6
9
12
15
18
VIN [V]
VIN [V]
4. 2 Current consumption during operation vs. Output current
4. 2. 1 VOUT = 3.3 V, −VDET = 2.6 V
VIN = 13.5 V, WADJ pin is open
4. 2. 2
V
OUT = 5.0 V, −VDET = 4.7 V
VIN = 13.5 V, WADJ pin is open
160
120
80
40
0
160
120
80
40
0
Ta =
−
40°C
Ta = −40°C
Ta =
120
+
125°C
Ta =
120
+
125°C
Ta =
40
+
25°C
Ta =
40
+
25°C
0
80
160
200
0
80
160
200
IOUT [mA]
IOUT [mA]
4. 3 Current consumption during operation vs. Junction temperature
4. 3. 1 VOUT = 3.3 V, −VDET = 2.6 V 4. 3. 2 VOUT = 5.0 V, −VDET = 4.7 V
VIN = 13.5 V, WADJ pin is open
VIN = 13.5 V, WADJ pin is open
160
120
80
40
0
160
120
80
40
0
I
OUT = 200 mA
I
OUT = 200 mA
I
OUT = 5 mA
IOUT = 5 mA
IOUT = 50 mA
IOUT = 50 mA
−40 −25
0
25 50 75 100 125 150
[°C]
−40 −25
0
25 50 75 100 125 150
[°C]
Tj
Tj
38
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.5_00
S-19500/19501 Series
Reference Data
1. Transient response characteristics when input (Ta = +25°C)
1. 1 VOUT = 3.3 V
IOUT = 30 mA, CL = 2.2
3.8
1. 2 VOUT = 5.0 V
IOUT = 30 mA, CL = 2.2
6.0
μ
F, VIN = 11.5 V
↔
13.5 V, tr = tf = 5.0
14
μ
s
μ
F, VIN = 11.5 V
↔
13.5 V, tr = tf = 5.0
14
μs
3.7
13
12
11
10
9
5.8
13
12
11
10
9
3.6
3.5
3.4
3.3
3.2
5.6
5.4
5.2
5.0
4.8
V
IN
V
IN
V
OUT
V
OUT
8
8
−100
0
100 200 300 400 500
−100
0
100 200 300 400 500
t [μs]
t [μs]
2. Transient response characteristics of load (Ta = +25°C)
2. 1 VOUT = 3.3 V
2. 2 VOUT = 5.0 V
VIN = 13.5 V, CL = 2.2 μF, IOUT = 50 mA ↔ 100 mA
VIN = 13.5 V, CL = 2.2 μF, IOUT = 50 mA ↔ 100 mA
3.7
3.6
3.5
3.4
3.3
3.2
3.1
150
5.8
5.6
5.4
5.2
5.0
4.8
4.6
150
100
50
100
50
I
OUT
I
OUT
0
0
V
OUT
V
OUT
−50
−100
−150
−50
−100
−150
−100
0
100 200 300 400 500
−100
0
100 200 300 400 500
t [μs]
t [μs]
3. Load dump characteristics (Ta = +25°C)
3. 1 VOUT = 5.0 V
IOUT = 0.1 mA, VIN = 13.5 V
6.0
↔
45.0 V, CIN = CL = 2.2
50
μF
5.8
5.6
40
30
20
10
0
5.4
5.2
5.0
4.8
V
IN
V
OUT
−10
−0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
t [s]
4. Example of equivalent series resistance vs. Output current characteristics (Ta = −40°C to +125°C)
CIN = CL = 2.2 μF, CDLY = 47 nF
10
VOUT
VIN
WO / RO
*1
WEN
CL
S-19500
Series
CIN
WI
Stable
WADJ
RESR
DLY
VSS
0
0.1
200
CDLY
IOUT [mA]
*1. CL: Murata Manufacturing Co., Ltd.
GCM31CR71H225K (2.2 μF)
39
AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 200 mA, BUILT-IN WATCHDOG TIMER VOLTAGE REGULATOR WITH RESET FUNCTION
S-19500/19501 Series
Rev.1.5_00
Power Dissipation
HSOP-8A
Tj = +150°C max.
5
E
4
D
3
2
1
0
C
B
A
0
25
50
75
100 125 150 175
Ambient temperature (Ta) [°C]
Board
Power Dissipation (PD)
1.20 W
A
B
C
D
E
1.69 W
3.21 W
3.38 W
4.03 W
40
HSOP-8A Test Board
No. HSOP8A-A-Board-SD-1.0
ABLIC Inc.
HSOP-8A Test Board
IC Mount Area
enlarged view
No. HSOP8A-A-Board-SD-1.0
ABLIC Inc.
5.02±0.2
3.0
8
5
5
8
1
4
4
1
0.20±0.05
1.27
0.4±0.05
No. FH008-A-P-SD-2.0
TITLE
No.
HSOP8A-A-PKG Dimensions
FH008-A-P-SD-2.0
ANGLE
UNIT
mm
ABLIC Inc.
4.0±0.1(10 pitches:40.0±0.2)
2.0±0.05
+0.1
-0.0
ø1.5
0.3±0.05
8.0±0.1
ø2.0±0.05
2.1±0.1
6.7±0.1
8
5
1
4
Feed direction
No. FH008-A-C-SD-1.0
TITLE
No.
HSOP8A-A-Carrier Tape
FH008-A-C-SD-1.0
ANGLE
UNIT
mm
ABLIC Inc.
17.4±1.0
13.4±1.0
Enlarged drawing in the central part
ø21±0.8
2±0.5
ø13±0.2
No. FH008-A-R-SD-1.0
TITLE
No.
HSOP8A-A-Reel
FH008-A-R-SD-1.0
QTY.
ANGLE
UNIT
4,000
mm
ABLIC Inc.
0.76
3.2
1.27
1.27
1.27
No. FH008-A-L-SD-1.0
HSOP8A-A
-Land Recommendation
TITLE
No.
FH008-A-L-SD-1.0
ANGLE
UNIT
mm
ABLIC Inc.
Disclaimers (Handling Precautions)
1. All the information described herein (product data, specifications, figures, tables, programs, algorithms and
application circuit examples, etc.) is current as of publishing date of this document and is subject to change without
notice.
2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of
any specific mass-production design.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the reasons other than the products
described herein (hereinafter "the products") or infringement of third-party intellectual property right and any other
right due to the use of the information described herein.
3. ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the incorrect information described
herein.
4. Be careful to use the products within their ranges described herein. Pay special attention for use to the absolute
maximum ratings, operation voltage range and electrical characteristics, etc.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by failures and / or accidents, etc. due to
the use of the products outside their specified ranges.
5. Before using the products, confirm their applications, and the laws and regulations of the region or country where they
are used and verify suitability, safety and other factors for the intended use.
6. When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related
laws, and follow the required procedures.
7. The products are strictly prohibited from using, providing or exporting for the purposes of the development of
weapons of mass destruction or military use. ABLIC Inc. is not liable for any losses, damages, claims or demands
caused by any provision or export to the person or entity who intends to develop, manufacture, use or store nuclear,
biological or chemical weapons or missiles, or use any other military purposes.
8. The products are not designed to be used as part of any device or equipment that may affect the human body, human
life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control
systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment,
aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses by
ABLIC, Inc. Do not apply the products to the above listed devices and equipments.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by unauthorized or unspecified use of
the products.
9. In general, semiconductor products may fail or malfunction with some probability. The user of the products should
therefore take responsibility to give thorough consideration to safety design including redundancy, fire spread
prevention measures, and malfunction prevention to prevent accidents causing injury or death, fires and social
damage, etc. that may ensue from the products' failure or malfunction.
The entire system in which the products are used must be sufficiently evaluated and judged whether the products are
allowed to apply for the system on customer's own responsibility.
10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the
product design by the customer depending on the intended use.
11. The products do not affect human health under normal use. However, they contain chemical substances and heavy
metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be
careful when handling these with the bare hands to prevent injuries, etc.
12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used.
13. The information described herein contains copyright information and know-how of ABLIC Inc. The information
described herein does not convey any license under any intellectual property rights or any other rights belonging to
ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any part of this
document described herein for the purpose of disclosing it to a third-party is strictly prohibited without the express
permission of ABLIC Inc.
14. For more details on the information described herein or any other questions, please contact ABLIC Inc.'s sales
representative.
15. This Disclaimers have been delivered in a text using the Japanese language, which text, despite any translations into
the English language and the Chinese language, shall be controlling.
2.4-2019.07
www.ablic.com
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