R5107G151A-TR-JE [RICOH]
Power Supply Management Circuit;
| 型号： | R5107G151A-TR-JE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Power Supply Management Circuit |
| 文件： | 总20页 (文件大小：900K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R5107G SERIES
AEC-Q100 Grade 2 Compliant
Microprocessor Supervisory Circuit with Manual Reset for Automotive Applications
NO.EC-170-130723
OUTLINE
The R5107G Series are CMOS-based microprocessor supervisory circuit and have 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 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%.
The function to stop supervising clock by the watchdog timer (INH function) and manual reset function are built
in this IC.
There are another 4 products by the difference of packages and the function of voltage detector and watchdog
timer. The package of R5107G is SSOP-8G.
FEATURES
Operating Voltage Range (Maximum Rating).................. 0.9V to 6.0V (7.0V)
Supply Current................................................................. Typ. 11A
< Voltage Detector Part >
Detector Threshold Range .............................................. 1.5V to 5.5V (0.1V steps)
Detector Threshold Accuracy .......................................... 1.0%
Detector Threshold Temperature Coefficient................... Typ.100ppm / C (40C Ta 105C)
Power-on Reset Delay Time accuracy ............................ 16% (40C Ta 105C)
Power-on reset delay time of the voltage detector.......... Typ. 370ms with an external capacitor : 0.1F
With Manual Reset pin (MR) ........................................... Able to reset voltage detector and watchdog timer
< Watchdog Timer Part >
Built-in a watchdog timer's time out period accuracy ...... 33% (40C Ta 105C)
Timeout period for watchdog timer.................................. Typ. 310ms with an external capacitor : 0.1F
Reset timer for watchdog timer........................................ Typ. 34ms with an external capacitor : 0.1F
With Inhibit pin (INH)........................................................ Able to stop watchdog timer
Package........................................................................... SSOP-8G
) Accuracy to center value of (Min.Max.)/2
APPLICATIONS
Supervisory circuit for car accessories including car audio systems, car navigation systems, and ETC
systems.
1
R5107G
NO.EC-170-130723
BLOCK DIAGRAMS
Nch Open Drain Output (R5107Gxx1A)
MR
VDD
CD
Vref2
Vref1
GND
SCK
CTW
WATCHDOG
TIMER
CLOCK
DETECTOR
RESETB
INH
CMOS Output (R5107Gxx1C)
MR
VDD
CD
Vref2
Vref1
GND
SCK
CTW
WATCHDOG
TIMER
CLOCK
DETECTOR
INH
RESETB
2
R5107G
NO.EC-170-130723
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;
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
SSOP-8G
3,000 pcs
Yes
Yes
R5107Gxx1-TR-#E
xx: The detector threshold (-VDET) can be designated in the range from 1.5V(15) to 5.5V(55) in 0.1V steps.
: Designation of Output Type
(A) Nch Open Drain
(C) CMOS
# : Specify the automotive class code.
Operating
Temperature Range
Guaranteed Specs
Temperature Range
Screening
Low and High
Temperatures
J
−40°C to 105°C
25°C
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
CTW pin are
combined uses.
Operating
Voltage Range
1.5V to 6.0V
Supply Current
Remarks
11.5A
3
R5107G
NO.EC-170-130723
PIN CONFIGURATION
SSOP-8G
8 7 6
5
1 2 3 4
PIN DESCRIPTIONS
Pin No.
Symbol
Description
Output Pin for Reset signal of Watchdog timer and Voltage Detector.
(Output "L" at detecting Detector Threshold and Watchdog Timer Reset.)
1
RESETB
2
3
4
5
6
7
8
MR
CD
Manual Reset Pin (Active"L")
External Capacitor Pin for Setting Delay Time of Voltage Detector
Ground Pin
GND
SCK
INH
CTW
VDD
Clock Input Pin from Microprocessor
Inhibit Pin ("L": Inhibit the watchdog timer)
External Capacitor Pin for Setting Reset and Watchdog Timeout Periods
Power supply Pin
4
R5107G
NO.EC-170-130723
ABSOLUTE MAXIMUM RATINGS
Ta25C
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
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
VINH
Voltage of CTW Pin
Voltage of RESETB Pin
Voltage of SCK Pin
Voltage of INH Pin
Voltage of MR Pin
Current of RESETB Pin
V
V
V
Input Voltage
V
VMR
V
IRESETB
PD
Output Current
mA
mW
C
C
Power Dissipation (SSOP-8G)
475
Tj
Junction Temperature
40 to 150
55 to 150
Tstg
Storage Temperature Range
) For Power Dissipation, please refer to PACKAGE INFORMATION.
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.
RECOMMENDED OPERATING RATINGS
Symbol
VIN
Item
Operating Ratings
Unit
Input Voltage
Operating Temperature Range
0.9 to 6.0
V
Ta
−40 to 105
C
RECOMMENDED OPERATING RATINGS
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating ratings. The semiconductor devices cannot operate normally over the recommended
operating ratings, even if when they are used over such ratings by momentary electronic noise or surge. And the
semiconductor devices may receive serious damage when they continue to operate over the recommended operating
ratings.
5
R5107G
NO.EC-170-130723
ELECTRICAL CHARACTERISTICS
VDD6.0V, CTW0.1F, CD0.1F, In case of Nch Open Drain Output type, the output pin is pulled up with a
resistance of 100kΩ (R5107Gxx1A), unless otherwise noted.
The specification in
is checked and guaranteed by design engineering at −40C Ta 105C.
R5107Gxx1A/C
Ta25C
Symbol
Item
Item
Conditions
VDD-VDET0.5V,
Clock pulse input
Min.
Typ.
Max.
Unit
ISS
Supply Current
11
15
A
VD Part
Symbol
Conditions
Min.
Typ.
Max.
Unit
Ta25C
0.990
1.010
-VDET Detector Threshold
V
40C Ta 105C
0.972
1.015
-VDET
0.03
-VDET
0.05
-VDET
0.07
V
Detector Threshold Hysteresis
Output Delay Time
V
HYS
CD0.1F 1
tPLH
340
370
467
ms
Nch
Pch 2
0.38
0.65
0.8
0.9
mA
VDD1.2V, VDS0.1V
VDD6.0V, VDS0.5V
Output Current
(RESETB Output pin)
IRESETB
mA
MR Input "H" 3
MR Input "L"
VMRH
VMRL
tMRW
RMR
1.0
0
6.0
V
V
0.35
MR Input Pulse Width 4
MR Pull-up Resistance
3
s
k
60
110
164
WDT Part
Symbol
Item
Conditions
Min.
230
29
Typ.
310
34
Max.
450
48
Unit
ms
ms
V
CTW0.1F 1
CTW0.1F 1
tWD
tWR
Watchdog Timeout period
Reset Hold Time of WDT
VSCKH SCK Input "H"
6.0
VDD0.8
VSCKL
VINHH
VINHL
SCK Input "L"
0
1.0
0
V
VDD0.2
6.0
INH Input "H"
V
INH Input "L"
0.35
152
V
RINH
INH pull-up Resistance
SCK Input Pulse Width
64
500
110
k
tSCKW
ns
VSCKLVDD0.2, VSCKHVDD0.8
On all of unit, all items except MR Input Pulse Width in the above are tested and specified under load
conditions such that Tj≈Ta=25°C.
1) The specification does not contain the temperature characteristics of the external capacitor.
2) In case of CMOS type (R5107Gxx1C)
3) In case of Nch open drain type (R5107Gxx1A)
4) MR input pulse width specification guarantee the minimum input pulse width of MR pin for output "L" from
RESETB pin. If the "L" pulse width of MR is short, tPLH may be short. Refer to the timing diagram for details.
6
R5107G
NO.EC-170-130723
TIMING CHART
+VDET
VDD
-VDET
VINH
VMR
t
PHL
t
PHL
tPLH
t
PLH
+VTCD
-VTCD
VCD
tWDI
tWD
tWD
Vref2H
VCTW
Vref2L
tWR
tWR
VSCK
t
MR
t
PLH
VRESETB
(1) (2)
(4)
(3)(5)
(6)
(7)
(8)
(9)
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.
7
R5107G
NO.EC-170-130723
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 is cleared, and CTW pin mode changes from the discharge
mode to the charge mode. When the CTW pin voltage becomes higher than Vref2H, 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" after the
tPHL.
(5) If "L" signal is input to the INH pin, the RESETB outputs "H", regardless the SCK clock state.
(6) During the "L" period of INH pin, the voltage detector monitors the supply voltage.
(7) When the signal to the INH pin is set from "L" to "H", the watchdog starts supervising the system clock, or
charge cycle to the CTW pin starts, the capacitor connected to the CTW pin is charged with the current of setting
Reset time of WDT.
(8) If "L" signal is input to the MR pin, the RESETB outputs "L" after the tMR, regardless the SCK clock state and
VDD voltage.
(9) When the signal to the MR pin is set from "L" to "H", the RESETB outputs "H" after the tPLH, the watchdog
starts supervising the system clock.
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".
During the reset time, (while charging the external capacitor) and 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
8
R5107G
NO.EC-170-130723
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)
The capacitor connected to CD pin determines tWD, tWR, and tPLH.
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
-VDET
V
DD
0V
Complete
Discharge
+VTCD
-VTCD
V
CD
0V
Incomplete
Discharge
VRESETB
0V
t
PLH1
t
PLH
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 100kin the case of the Nch open-drain
output type.)
9
R5107G
NO.EC-170-130723
Manual Reset (MR) Function
By setting MR pin as "L", the output of RESETB can be forced to set "L". After pull-down the MR pin to "L", the
delay time (tMR) to the output "L" from RESETB is 1s as maximum. MR pin is pulled-up via the built-in resistor.
(Typ. 110k ). If MR pin voltage > VDD voltage, a current flows into MR pin. However, the current value is limit by
the pull-up resistor, therefore there is not bad impact on the operation. When the "L" signal is input to MR pin, the
discharge of CD pin capacitor (CD) starts. If the term of "L" for MR pin is short, CD will not be discharged enough.
As a result, the delay time after setting "H" for MR pin will be shorter than expected. Because of this, confirm the
operation under the same conditions as users' applications. For example, in case of CD is set at 0.1F, and the
condition to maintain the delay time value after MR pin's returning to "H", is described as the minimum "L" term of
MR pin, or 150s. When MR input pulse (tMRW) is less than 3.0s, output delay time (tPLH) might not exist.
Power on Reset Operation with MR pin input (tPLH1 < tPLH, tMRW1 < tMRW)
VMR
0V
Incomplete
Discharge
Complete
Discharge
+VTCD
-VTCD
VCD
0V
t
MR
t
MR
t
MR
VRESETB
0V
t
MRW1
t
MRW1
t
PLH1
t
MRW
t
PLH
Inhibit (INH) Function
If INH pin is set at "L", the watchdog timer stops monitoring the clock, and the RESETB output will be
dominant by the voltage detector's operation. Therefore, if the supply voltage is set at more than the detector
threshold level, RESETB outputs "H" regardless the clock pulse. INH pin is pulled up with a resistor (Typ.110k)
internally.
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.
10
R5107G
NO.EC-170-130723
TYPICAL APPLICATIONS
Power Supply
Microprocessor
VDD
R
8
6
2
3
RESETB
R5107Gxx1A
1
5
V
DD
RESET
I/O
INH
MR
Series
SCK
SW SW
C
D
CTW
7
GND
4
C
TW
C
D
Power Supply
Microprocessor
V
DD
8
6
2
3
RESETB
1
5
V
DD
INH
MR
RESET
I/O
R5107Gxx1C
Series
SCK
SW SW
C
D
CTW
7
GND
4
C
TW
C
D
TEST CIRCUIT
R (R5107Gxx1A)
Clock Input
A
8
6
2
3
RESETB 1
V
DD
INH
MR
R5107Gxx1A/C
5
7
Series
SCK
C
D
CTW
GND
4
C
D
CTW
Supply Current Test Circuit
11
R5107G
NO.EC-170-130723
PACKAGE INFORMATION
Power Dissipation (SSOP-8G)
Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the
measurement at the condition below:
Measurement Conditions
Standard Test Land Pattern
Environment
Board Material
Board Dimensions
Copper Ratio
Mounting on Board (Wind velocity=0m/s)
Glass cloth epoxy plastic (Double sided)
40mm*40mm*1.6mm
Top side: Approx. 50%, Back side: Approx. 50%
0.5mm * 44pcs
Through-holes
Measurement Result:
(Ta=25C, Tjmax=150C)
Standard Test Land Pattern
Power Dissipation
475mW
ja = (150-25C)/0.475W = 263C/W
jc = 60C/W
Thermal Resistance
40
600
475
500
On Board
400
300
200
100
0
105
100 125 150
0
25
50
75
IC Mount Area (Unit: mm)
Ambient Temperature ( C)
Power Dissipation
Measurement Board Pattern
12
R5107G
NO.EC-170-130723
PACKAGE DIMENSIONS (SSOP-8G)
2.9±0.2
5
8
1
4
4.0±0.2
2.8±0.2
0.475nom.
0-15
0.45±0.15
0.65
0.1
0.2±0.1
Unit: mm
0.15 M
MARK SPECIFICATION (SSOP-8G)
：Product Code･･･Refer to “R5107G Mark Specification Table”.
：Lot Number ･･･Alphanumeric Serial Number
8 7 6 5
1 2 3 4
Markings
13
R5107G
NO.EC-170-130723
R5107G Mark Specification Table (SSOP-8G)
R5107Gxx1A
R5107Gxx1C
Product Name
R5107G151C
R5107G161C
R5107G171C
R5107G181C
R5107G191C
R5107G201C
R5107G211C
R5107G221C
R5107G231C
R5107G241C
R5107G251C
R5107G261C
R5107G271C
R5107G281C
R5107G291C
R5107G301C
R5107G311C
R5107G321C
R5107G331C
R5107G341C
R5107G351C
R5107G361C
R5107G371C
R5107G381C
R5107G391C
R5107G401C
R5107G411C
R5107G421C
R5107G431C
R5107G441C
R5107G451C
R5107G461C
R5107G471C
R5107G481C
R5107G491C
R5107G501C
R5107G511C
R5107G521C
R5107G531C
R5107G541C
R5107G551C
E 0 1 A
E 0 2 A
E 0 3 A
E 0 4 A
E 0 5 A
E 0 6 A
E 0 7 A
E 0 8 A
E 0 9 A
E 1 0 A
E 1 1 A
E 1 2 A
E 1 3 A
E 1 4 A
E 1 5 A
E 1 6 A
E 1 7 A
E 1 8 A
E 1 9 A
E 2 0 A
E 2 1 A
E 2 2 A
E 2 3 A
E 2 4 A
E 2 5 A
E 2 6 A
E 2 7 A
E 2 8 A
E 2 9 A
E 3 0 A
E 3 1 A
E 3 2 A
E 3 3 A
E 3 4 A
E 3 5 A
E 3 6 A
E 3 7 A
E 3 8 A
E 3 9 A
E 4 0 A
E 4 1 A
F 0 1 A
F 0 2 A
F 0 3 A
F 0 4 A
F 0 5 A
F 0 6 A
F 0 7 A
F 0 8 A
F 0 9 A
F 1 0 A
F 1 1 A
F 1 2 A
F 1 3 A
F 1 4 A
F 1 5 A
F 1 6 A
F 1 7 A
F 1 8 A
F 1 9 A
F 2 0 A
F 2 1 A
F 2 2 A
F 2 3 A
F 2 4 A
F 2 5 A
F 2 6 A
F 2 7 A
F 2 8 A
F 2 9 A
F 3 0 A
F 3 1 A
F 3 2 A
F 3 3 A
F 3 4 A
F 3 5 A
F 3 6 A
F 3 7 A
F 3 8 A
F 3 9 A
F 4 0 A
F 4 1 A
Product Name
R5107G151A
R5107G161A
R5107G171A
R5107G181A
R5107G191A
R5107G201A
R5107G211A
R5107G221A
R5107G231A
R5107G241A
R5107G251A
R5107G261A
R5107G271A
R5107G281A
R5107G291A
R5107G301A
R5107G311A
R5107G321A
R5107G331A
R5107G341A
R5107G351A
R5107G361A
R5107G371A
R5107G381A
R5107G391A
R5107G401A
R5107G411A
R5107G421A
R5107G431A
R5107G441A
R5107G451A
R5107G461A
R5107G471A
R5107G481A
R5107G491A
R5107G501A
R5107G511A
R5107G521A
R5107G531A
R5107G541A
R5107G551A
14
R5107G
NO.EC-170-130723
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)
15
R5107G
NO.EC-170-130723
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
VDD=6.0V
VDD=5.0V
VDD=4.0V
VDD=3.0V
VDD=2.0V
VDD=1.5V
VDD=1.0V
6
4
2
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
VDS (V)
16
R5107G
NO.EC-170-130723
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)
17
R5107G
NO.EC-170-130723
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)
18
R5107G
NO.EC-170-130723
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.
VDD
VDD
VDD
R1
R1
R1
VDD
VDD
VDD
R2
R510xx Series
RESETB
R510xx Series
RESETB
R510xx Series
RESETB
R2
GND
GND
GND
Figure A
Figure B
Figure C
19
1.The products and the product specifications described in this document are subject to change or
discontinuation of production without notice for reasons such as improvement. Therefore, before
deciding to use the products, please refer to Ricoh sales representatives for the latest information
thereon.
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prior written consent of Ricoh.
3.Please be sure to take any necessary formalities under relevant laws or regulations before exporting or
otherwise taking out of your country the products or the technical information described herein.
4.The technical information described in this document shows typical characteristics of and example
application circuits for the products. The release of such information is not to be construed as a
warranty of or a grant of license under Ricoh's or any third party's intellectual property rights or any
other rights.
5.The products in this document are designed for automotive applications. However, when using the
products for automotive applications, please make sure to contact Ricoh sales representative in
advance due to confirming the quality level.
6.We are making our continuous effort to improve the quality and reliability of our products, but
semiconductor products are likely to fail with certain probability. In order to prevent any injury to
persons or damages to property resulting from such failure, customers should be careful enough to
incorporate safety measures in their design, such as redundancy feature, firecontainment feature and
fail-safe feature. We do not assume any liability or responsibility for any loss or damage arising from
misuse or inappropriate use of the products.
7.Anti-radiation design is not implemented in the products described in this document.
8.Please contact Ricoh sales representatives should you have any questions or comments concerning
the products or the technical information.
Ricoh is committed to reducing the environmental loading materials in electrical devices
with a view to contributing to the protection of human health and the environment.
Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since
Halogen Free
April 1, 2012.
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