R5105N541C-TR [RICOH]
Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDSO6, 2.80 X 2.90 MM, SOT-23, 6 PIN;
| 型号： | R5105N541C-TR |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDSO6, 2.80 X 2.90 MM, SOT-23, 6 PIN 光电二极管 |
| 文件： | 总17页 (文件大小：899K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R5105N SERIES
Microprocessor Supervisory Circuit
OUTLINE
NO.EA-159-080808
The R5105N Series are CMOS-based microprocessor supervisory circuit, or high accuracy and ultra low
supply current voltage detector with built-in delay circuit and watchdog timer. When the supply voltage is down
across the threshold, or the watchdog timer does not detect the system clock from the microprocessor, the reset
output is generated.
The voltage detector circuit is used for the system reset, etc. The detector threshold is fixed internally, and the
accuracy is ±1.0%. The released delay time (Power-on Reset Delay) circuit is built-in, and output delay time is
adjustable with an external capacitor, and the accuracy is ±16%*. When the supply voltage becomes higher
than the released voltage, the reset state will be maintained during the delay time. The output type of the reset
is selectable, Nch open-drain, or CMOS.
The time out period of the watchdog timer can be also set with an external capacitor, and the accuracy is
±33%*.
There are another 4 products by the difference of packages and the function of voltage detector and
watchdog timer. The package of R5105N is SOT-23-6.
FEATURES
• Supply Current......................................................................Typ. 11µA
• Operating Voltage Range .....................................................0.9V to 6.0V
< Voltage Detector Part >
• Detector Threshold Range....................................................Stepwise setting with a step of 0.1V in the
range of 1.5V to 5.5V
• Detector Threshold Accuracy................................................±1.0%
<
• Power-on Reset Delay Time accuracy .................................±16%* (-40°C Topt 105°C)
=
=
• Power-on reset delay time of the voltage detector...............Typ. 370ms with an external capacitor : 0.1µF
< Watchdog Timer Part >
<
• Built-in a watchdog timer's time out period accuracy ...........±33%* (-40°C Topt 105°C)
=
=
• Timeout period for watchdog timer .......................................Typ. 310ms with an external capacitor : 0.1µF
• Reset timer for watchdog timer.............................................Typ. 34ms with an external capacitor : 0.1µF
• Package................................................................................SOT-23-6
*) Accuracy to center value of (Min.+Max.)/2
APPLICATIONS
• Supervisory circuit for equipment with using microprocessors.
1
R5105N
BLOCK DIAGRAMS
Nch Open Drain Output (R5105Nxx1A)
CMOS Output (R5105Nxx1C)
3
3
6
DD
DD
D
V
V
D
C
C
6
2
Vref2
Vref2
Vref1
Vref1
5
1
5
1
GND
SCK
GND
SCK
2
4
TW
TW
C
C
WATCHDOG
TIMER
CLOCK
DETECTOR
WATCHDOG
TIMER
CLOCK
DETECTOR
4
RESETB
RESETB
SELECTION GUIDE
The detector threshold, the output type and the taping type for the ICs can be selected at the users’ request.
The selection can be made with designating the part number as shown below;
R5105Nxx1x-xx-x← Part Number
↑ ↑
a b
↑
c
↑
d
↑
e
Code
Contents
Designation of Package Type;
N: SOT-23-6
a
Setting Detector Threshold (-VDET);
b
c
d
e
Stepwise setting with a step of 0.1V in the range of 1.5V to 5.5V is possible.
Designation of Output Type;
A: Nch Open Drain
C: CMOS
Designation of Taping Type ;
TR (Refer to Taping Specifications; TR type is the standard direction.)
Designation of Composition of pin plating
-F: Lead free solder plating (SOT-23-6)
2
R5105N
SERIES SELECTION
R5105N
R5106N
R5107G
R5108G
R5109G
Package
With INH pin (Inhibit)
2 clock input
SOT-23-6
SSOP-8G
No
Yes
No
Yes
No
With MR pin (Manual Reset)
With SENSE pin
No
Yes
No
No
Yes
CD pin and
Operating
Supply Current
Remarks
CTW pin are
Voltage Range
1.5V to 6.0V
11.5µA
combined uses.
PIN CONFIGURATION
• SOT-23-6
6
5
4
(mark side)
1
2
3
PIN DESCRIPTIONS
• SOT-23-6
Pin No.
Symbol
Description
1
SCK
Clock Input Pin from Microprocessor
External Capacitor Pin for setting Reset and Watchdog Timer
2
3
CTW
VDD
Timeout Period
Power supply Pin
Output Pin for Reset signal of Watchdog timer and Voltage Detector.
(Output "L" at detecting Detector Threshold and Watchdog Timer
Reset.)
4
RESETB
5
6
GND
Ground Pin
CD
External Capacitor Pin for Setting delay time of Voltage Detector
3
R5105N
ABSOLUTE MAXIMUM RATINGS
Topt=25°C
Symbol
Item
Rating
-0.3 to 7.0
-0.3 to VDD + 0.3
-0.3 to VDD + 0.3
-0.3 to 7.0
-0.3 to 7.0
20
Unit
V
VDD
Supply Voltage
Output Voltage
VCD
Voltage of CD Pin
V
VCTW
VRESETB
VSCK
Voltage of CTW Pin
V
Voltage of RESETB Pin
Voltage of SCK Pin
Current of RESETB Pin
V
Input Voltage
V
IRESETB
PD
Output Current
mA
mW
°C
°C
Power Dissipation (SOT-23-6)*
Operating Temperature Range
Storage Temperature Range
420
Topt
Tstg
-40 to 105
-55 to 125
* ) For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
4
R5105N
ELECTRICAL CHARACTERISTICS
VDD=6.0V, CTW=0.1µF, CD=0.1µF, In case of Nch Open Drain Output type, the output pin is pulled up with a
resistance of 100kΩ (R5105Nxx1A), unless otherwise noted.
<
<
The specification in
is checked and guaranteed by design engineering at −40°C Topt 105°C.
=
=
• R5105Nxx1A/C
Symbol
Topt=25°C
Item
Conditions
Min.
Typ.
Max.
Unit
VDD
ISS
Operating Voltage
Supply Current
0.9
6.0
V
VDD= -VDET+0.5V,
11
15
µA
Clock pulse input
• VD Part
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
Topt=25°C
×0.990
×1.010
-VDET Detector Threshold
V
−40°C Topt 105°C
×0.972
×1.015
=
=
-VDET
×0.03
-VDET
-VDET
V
Detector Threshold Hysteresis
VHYS
×0.05
×0.07
∆-VDET/ Detector Threshold
−40°C Topt 105°C
±100
370
0.8
ppm/°C
ms
=
CD=0.1µF *1
Nch
=
Temperature Coefficient
Output Delay Time
∆Topt
tPLH
340
467
VDD=1.2V
VDS=0.1V
0.38
mA
Output Current
IRESETB
(RESETB Output pin)
VDD=6.0V
VDS=0.5V
Pch *2
0.65
0.9
mA
• WDT Part
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
CTW=0.1µF *1
CTW=0.1µF *1
tWD
tWR
Watchdog Timeout period
Reset Hold Time of WDT
230
310
450
ms
29
VDD×0.8
0
34
48
6.0
ms
V
VSCKH SCK Input "H"
VSCKL
tSCKW
SCK Input "L"
V
VDD×0.2
VSCKL=VDD×0.2
VSCKH=VDD×0.8
SCK Input Pulse Width
500
ns
All of unit are tested and specified under load conditions such that Topt=25°C except for Detector Threshold
Temperature Coefficient.
*1) The specification does not contain the temperature characteristics of the external capacitor.
*2) In case of CMOS type (R5105Nxx1C)
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions.
The semiconductor devices cannot operate normally over the recommended operating conditions, even if
when they are used over such conditions by momentary electronic noise or surge.
And the semiconductor devices may receive serious damage when they continue to operate over the
recommended operating conditions.
5
R5105N
TIMING CHART
DET
+V
-V
DD
V
DET
PHL
PHL
t
t
CD
V
TCD
+V
TCD
-V
WD
t
WDI
t
ref2H
V
CTW
V
ref2L
V
PLH
t
PLH
t
SCK
V
WR
t
RESETB
V
(1)
(2)
(3)
(4) (1)
∗) VTCD : Threshold voltage of CD pin when a power-on reset pulse inverting.
∗) Vref2H : CTW pin voltage at the end of WDT timeout period.
∗) Vref2L : CTW pin voltage at the begin of WDT timeout period.
OPERATION
(1) When the power supply, VDD pin voltage becomes more than the released voltage (+VDET), after the released
delay time (or the power on reset time tPLH), the output of RESETB becomes "H" level.
(2) When the SCK pulse is input, the watchdog timer (WDT) is cleared, and CTW pin mode changes from the
discharge mode to the charge mode. When the CTW pin voltage becomes higher than VrefH, the mode will
change into the discharge mode, and next watchdog time count starts.
(3) Unless the SCK pulse is input, WDT will not be cleared, and during the charging period of CTW pin,
RESETB="L".
(4) When the VDD pin becomes lower than the detector threshold voltage(-VDET), RESETB outputs "L".
6
R5105N
• Watchdog Timeout period/Reset hold time
The watchdog timeout period and reset hold time can be set with an external capacitor to CTW pin.
The next equations describe the relation between the watchdog timeout period and the external capacitor
value, or the reset hold time and the external capacitor value.
tWD (s) = 3.1×106×C (F)
tWR (s) = tWD/9
The watchdog timer (WDT) timeout period is determined with the discharge time of the external capacitor.
During the watchdog timeout period, if the clock pulse from the system is detected, WDT is cleared and the
capacitor is charged. When the charge of the capacitor completes, another watchdog timeout period starts
again. During the watchdog timeout period, if the clock pulse from the system is not detected, during the next
reset hold time RESETB pin outputs "L".
After starting the watchdog timeout period, (just after from the discharge of the external capacitor) even if the
clock pulse is input during the time period "tWDI", the clock pulse is ignored.
tWDI (s) = tWD/10
• Released Delay Time (Power-on Reset delay time)
The released delay time can be set with an external capacitor connected to the CD pin. The next equation
describes the relation between the capacitance value and the released delay time (tPLH).
tPLH (s) =3.7×106× C (F)
When the VDD voltage becomes equal or less than (-VDET), discharge of the capacitor connected to the CD pin
starts. Therefore, if the discharge is not enough and VDD voltage returns to (+VDET) or more, thereafter the delay
time will be shorter than tPLH which is expected.
Power on Reset Operation against the input glitch (tPLH1<tPLH)
+VDET
DD
V
-VDET
0V
Complete
Discharge
+VTCD
CD
V
-VTCD
0V
Incomplete
Discharge
RESETB
V
0V
tPLH1
tPLH
• Minimum Operating Voltage
We specified the minimum operating voltage as the minimum input voltage in which the condition of RESETB
pin being 0.1V or lower than 0.1V. (Herein, pull-up resistance is set as 100kΩ in the case of the Nch open-drain
output type.)
7
R5105N
• RESETB Output
RESETB pin's output type is selectable either the Nch open-drain output or CMOS output. If the Nch
open-drain type output is selected, the RESETB pin is pulled up with an external resistor to an appropriate
voltage source.
• Clock Pulse Input
Built-in watchdog timer is cleared with the SCK clock pulse within the watchdog timeout period.
8
R5105N
TYPICAL APPLICATIONS
Power Supply
Microprocessor
Power Supply
Microprocessor
DD
V
DD
V
R
3
6
RESETB
4
1
3
6
RESETB 4
DD
DD
V
V
RESET
I/O
RESET
I/O
R5105Nxx1A
R5105Nxx1C
Series
Series
1
2
SCK
SCK
D
C
D
C
TW
C
2
CTW
GND
5
GND
5
D
C
D
C
TW
TW
C
C
TEST CIRCUITS
R (R5105Nxx1A)
A
3
6
RESETB
4
1
DD
V
Clock Input
R5105Nxx1A/C
Series
SCK
D
C
TW
C
2
GND
5
D
C
TW
C
Supply Current Test Circuit
9
R5105N
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
R510xx151x
R510xx301x
20
20
18
16
14
12
10
8
105°C
105°C
18
25°C
25°C
16
-40°C
-40°C
14
12
10
8
6
6
4
4
2
2
0
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VDD (V)
Input Voltage VDD (V)
2) Detector Threshold vs. Temperature
R510xx151x
R510xx271x
1.53
2.74
2.73
2.72
2.71
2.70
2.69
2.68
2.67
2.66
1.52
1.51
1.50
1.49
1.48
1.47
-40 -25
0
25
50
75
105
-40 -25
0
25
50
75
105
Temperature Topt (°C)
Temperature Topt (°C)
R510xx421x
4.28
4.26
4.24
4.22
4.20
4.18
4.16
4.14
4.12
-40 -25
0
25
50
75
105
Temperature Topt (°C)
10
R5105N
3) Detector Threshold Hysteresis vs. Temperature
R510xx151x
R510xx271x
7
7
6
5
4
3
6
5
4
3
-40 -25
0
25
50
75
105
-40 -25
0
25
50
75
105
Temperature Topt (°C)
Temperature Topt (°C)
R510xx421x
7
6
5
4
3
-40 -25
0
25
50
75
105
Temperature Topt (°C)
4) Nch Driver Output Current vs. VDS
R510xx
20
18
16
14
12
10
8
V
V
V
V
V
V
V
DD=6.0V
DD=5.0V
DD=4.0V
DD=3.0V
DD=2.0V
DD=1.5V
DD=1.0V
6
4
2
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
VDS (V)
11
R5105N
5) Nch Driver Output Current vs. Input Voltage
R510xx
R510xx
VDS=0.3V
VDS=0.5V
20
18
16
14
12
10
8
20
18
16
14
12
10
8
Topt=-40°C
Topt=-40°C
Topt=25°C
Topt=105°C
Topt=25°C
Topt=105°C
6
6
4
4
2
2
0
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VDD (V)
Input Voltage VDD (V)
6) Pch Driver Output Current vs. Input Voltage
R510xx
R510xx
VDS=0.3V
VDS=0.5V
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Topt=-40°C
Topt=25°C
Topt=105°C
Topt=-40°C
Topt=25°C
Topt=105°C
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VDD (V)
Input Voltage VDD (V)
R510xx
VDS=1.0V
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Topt=-40°C
Topt=25°C
Topt=105°C
0
1
2
3
4
5
6
Input Voltage VDD (V)
12
R5105N
7) Released Delay Time vs. Input Voltage
R510xx
8) Released Delay Time vs. Temperature
R510xx
Topt=25°C
V
DD=6V
500
500
480
460
440
420
400
380
360
340
320
300
480
460
440
420
400
380
360
340
320
300
0
1
2
3
4
5
6
7
-40 -25
0
25
50
75
105
Input Voltage VDD (V)
Temperature Topt (°C)
9) Detector Output Delay Time vs. Temperature 10) WDT Reset Timer vs. Temperature
R510xx
R510xx
100
90
80
70
60
50
40
30
20
10
0
50
48
46
44
42
40
38
36
34
32
30
1µs
-VDET+1V
-VDET 1V
Input Voltage
-
-40 -25
0
25
50
75
105
-40 -25
0
25
50
75
105
Temperature Topt (°C)
Temperature Topt (°C)
11) WDT Timeout Period vs. Temperature
12) WDT Reset Timer vs. Input Voltage
R510xx
R510xx
400
380
360
340
320
300
280
260
240
220
200
50
48
46
44
42
40
38
36
34
32
30
-40 -25
0
25
50
75
105
1
2
3
4
5
6
Temperature Topt (°C)
Input Voltage VDD (V)
13
R5105N
13) WDT Timeout Period vs. Input Voltage
R510xx
14) Output Delay Time vs. External Capacitance
R510xx
1000
400
380
360
340
320
300
280
260
240
220
200
100
tPLH
10
1
1µs 1µs
Input
Voltage
-VDET+1V
-VDET 1V
0.1
-
0.01
0.001
tPHL
1
2
3
4
5
6
0.1
1
10
100
External Capacitance C
D
(nF)
Input Voltage VDD (V)
TECHNICAL NOTES
When R510xxxx1A (Nch Open Drain Output Type) is used in Figure A or Figure B, if impedance of Voltage
Supply pin, VDD and VDD of this IC is large, detector threshold level would shift by voltage dropdown caused by
the consumption current of the IC itself. Released voltage may also shift and delay time for start-up might be
generated by this usage.
When R510xxxx1C (CMOS Output Type) is used in Figure A or Figure B, Output level could be unstable by
cross conduction current which is generated at detector threshold level or at released voltage level, therefore,
do not use this IC with the connection in Figure A or Figure B.
The connection in Figure C may cause the oscillation in both R510xxxx1A (Nch Open Drain Output) and
R510xxxx1C (CMOS Output), therefore do not use R510xx Series with the connection in Figure C.
DD
V
DD
V
DD
V
R1
R1
R1
DD
V
DD
V
DD
V
R2
R510xx Series
RESETB
R510xx Series
RESETB
R510xx Series
RESETB
R2
GND
GND
GND
Figure A
Figure B
Figure C
14
PE-SOT-23-6-0611
PACKAGE INFORMATION
• SOT-23-6 (SC-74)
Unit: mm
PACKAGE DIMENSIONS
2.9 0.2
1.9 0.2
+0.2
1.1
−
0.1
(0.95)
(0.95)
0.8 0.1
6
5
4
0 to 0.1
1
2
+0.1
−0.05
+0.1
0.15
0.4
−
0.2
TAPING SPECIFICATION
+0.1
0
4.0 0.1
φ1.5
0.3 0.1
2.0 0.05
6
1
5
4
3.3
2
3
2.0Max.
4.0 0.1
∅1.1 0.1
TR
User Direction of Feed
TAPING REEL DIMENSIONS REUSE REEL (EIAJ-RRM-08Bc)
(1reel=3000pcs)
11.4 1.0
9.0 0.3
2 0.5
21 0.8
PE-SOT-23-6-0611
PACKAGE INFORMATION
POWER DISSIPATION (SOT-23-6)
This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board.
This specification is based on the measurement at the condition below:
Measurement Conditions
Standard Land Pattern
Environment
Board Material
Board Dimensions
Copper Ratio
Mounting on Board (Wind velocity=0m/s)
Glass cloth epoxy plactic (Double sided)
40mm × 40mm × 1.6mm
Top side : Approx. 50% , Back side : Approx. 50%
Through-hole
φ0.5mm × 44pcs
Measurement Result
(Topt=25°C,Tjmax=125°C)
Standard Land Pattern
420mW
Free Air
250mW
Power Dissipation
Thermal Resistance
θja=(125−25°C)/0.42W=263°C/W
400°C/W
600
40
500
On Board
420
400
300
200
100
0
0
25
50
75 85 100
125
150
Ambient Temperature (°C)
Power Dissipation
Measurement Board Pattern
IC Mount Area Unit : mm
RECOMMENDED LAND PATTERN
0.7 MAX.
0.95
1.9
0.95
(Unit: mm)
ME-R5105N-080605
MARK INFORMATION
R5105N SERIES MARK SPECIFICATION
• SOT-23-6 (SC-74)
1
3
2
4
,
,
: Product Code (refer to Part Number vs. Product Code)
: Lot Number
1
2
3
4
• Part Number vs. Product Code
R5105Nxx1A Series
Product Code
R5105Nxx1C Series
Product Code
Product Code
Product Code
Part Number
Part Number
Part Number
Part Number
1
2
A
B
C
D
E
F
1
2
1
2
A
B
C
D
E
F
G
H
J
1
2
R5105N151A
R5105N161A
R5105N171A
R5105N181A
R5105N191A
R5105N201A
R5105N211A
R5105N221A
R5105N231A
R5105N241A
R5105N251A
R5105N261A
R5105N271A
R5105N281A
R5105N291A
R5105N301A
R5105N311A
R5105N321A
R5105N331A
R5105N341A
R5105N351A
R5105N361A
R5105N371A
R5105N381A
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
R5105N391A
R5105N401A
R5105N411A
R5105N421A
R5105N431A
R5105N441A
R5105N451A
R5105N461A
R5105N471A
R5105N481A
R5105N491A
R5105N501A
R5105N511A
R5105N521A
R5105N531A
R5105N541A
R5105N551A
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
A
B
C
D
E
F
G
H
J
R5105N151C
R5105N161C
R5105N171C
R5105N181C
R5105N191C
R5105N201C
R5105N211C
R5105N221C
R5105N231C
R5105N241C
R5105N251C
R5105N261C
R5105N271C
R5105N281C
R5105N291C
R5105N301C
R5105N311C
R5105N321C
R5105N331C
R5105N341C
R5105N351C
R5105N361C
R5105N371C
R5105N381C
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
R5105N391C
R5105N401C
R5105N411C
R5105N421C
R5105N431C
R5105N441C
R5105N451C
R5105N461C
R5105N471C
R5105N481C
R5105N491C
R5105N501C
R5105N511C
R5105N521C
R5105N531C
R5105N541C
R5105N551C
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
A
B
C
D
E
F
G
H
J
G
H
J
K
L
K
L
K
L
K
L
M
N
P
Q
R
S
T
U
V
W
X
Y
Z
M
N
P
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R
S
M
N
P
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R
S
T
U
V
W
X
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Z
M
N
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S
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