R5101G004A [RICOH]
Microprocessor power management with Watchdog Timer; 微处理器的电源管理与看门狗定时器
| 型号： | R5101G004A |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Microprocessor power management with Watchdog Timer |
| 文件： | 总17页 (文件大小：331K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
‘99.12.3
Microprocessor power management with Watchdog Timer
R5101G Series
12345
n OUTLINE
The R5101G Series are microprocessor power management ICs with high accuracy output voltage and
detector threshold and with ultra low supply current by CMOS process. Each of these ICs consists of a voltage
regulator, a voltage detector and a watchdog timer. Thus, the R5101G Series have the function of a power
management for microprocessor, a monitor of the voltage of a power source and a microprocessor supervisor.
The built-in voltage regulator with an internal driver transistor can supply typically 50mA current to a system
when the voltage difference between input and output is 2V. Therefore these ICs are very suitable for various
power supply systems for microprocessors. The output voltage is monitored by the voltage detector which is
built-in these ICs.
The built-in voltage detector has an output delay function and the delay time can be set by an external
capacitor(CD).
The output voltage and the detector threshold voltage can be set individually for each IC by laser trimming.
Furthermore, when a microprocessor works incorrectly, the watchdog timer which checks over microprocessor
generates reset signals intermittently to prevent a whole system from being malfunction.
The time period for watching and holding a reset signal of the watchdog timer can also be set individually
by an external capacitor(CTW).
n FEATURES
l Built-in a watchdog timer
l Time period for monitoring and generating a reset signal of the watchdog timer can be set by an external
capacitor
l Watchdog timer can be stopped individually by CE Pin
l Low supply current · · · · · · · · · · · · · · · · · · · · · · ·TYP. 5µA
l The output voltage of Voltage Regulator and the detector threshold voltage can be set individually with a step
of 0.1V for each IC by laser trim
l High Accuracy Output Voltage of Voltage Regulator and Detector Threshold · · · · ±2.5%
l Power-on Reset Delay Time can be set by an external capacitor
l Output Current · · · · · · · Typ. 50mA (at Vin - Vout = 2V)
l Small Package · · · Ultra-mini SSOP-8G (0.65mm pitch ) Refer to Package Dimensions
n APPLICATION
l Power source for microprocessors
n PIN CONFIGURATION
SSOP8G(0.65mm pitch)
Reset
SCK
CD
CE
GND
CTW
VDD
VOUT
12345
Rev. 1.10
- 1 -
n PACKAGE DIMENSIONS
SSOP8G
0.65
2.9±0.1
Unit : mm
n BLOCK DIAGRAMS
8
RESET
1
WDT
Level Shift
SCK
3
7
CTW
CE
4
5
VDD
VOUT
Vref2
+
-
-
+
-
+
2
CD
Vref1
6
GND
12345
Rev. 1.10
- 2 -
n PIN DESCRIPTION
Pin No. Symbol
Description
1
2
3
4
5
6
7
8
SCK Clock Input Pin from Microprocessor
CD
External Capacitor Pin for Setting Delay Time of Voltage Detector
CTW External Capacitor Pin for Setting Monitoring Time and Reset Time of Watchdog timer
V
DD
Power supply Pin
V
OUT
Output Pin for Voltage Regulator
GND Ground Pin
CE
Control Switch Pin for Watchdog timer ( "H" active, "L" inactive)
RESET Output Pin for Reset signal of Watchdog timer and Voltage Detector.(Output Type is Nch
Open Drain, Output "L" at detecting Detector Threshold and Watchdog Timer Reset. )
n ABSOLUTE MAXIMUM RATINGS
Topt=25 C, Vss=0V
°
Symbol
VDD
VCD
VCTW
VOUT
VRESET
VCE
Item
Rating
-0.3 12
Unit
V
V
V
V
Supply Voltage
Output Voltage
~
V -0.3 VDD+0.3
Voltage of CD Pin
~
ss
V -0.3 VDD+0.3
Voltage of CTW Pin
~
ss
V -0.3 VDD+0.3
Voltage of V
Pin
~
OUT
ss
V -0.3 12
V
V
Voltage of RESET Pin
Voltage of CE Pin
~
ss
Input Voltage
V -0.3 VDD+0.3
~
ss
VSCK
IOUT
IRESET
PD
V -0.3 VDD+0.3
V
Voltage of SCK Pin
~
ss
Output Current
150
10
300
mA
mA
mW
Current of V
Pin
OUT
Current of RESET Pin
Power Dissipation
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
-40 +85
-55 +125
~
C
C
~
°
°
12345
Rev. 1.10
- 3 -
n ELECTRICAL CHARACTERISTICS
R5101G001A
Topt=25 C
l
°
Symbol
VDD
Iss-On
Iss-Off
VOUT
IOUT
Item
Conditions
MIN.
TYP.
MAX.
10
15
Unit
V
Operating Voltage
Supply Current (WDT active)
Supply Current (WDT inactive)
Output Voltage
VDD=CE=5.0V
VDD=5.0V, CE=GND
VDD=5.0V,IOUT=10mA
VDD=5.0V
5
6
A
m
A
m
18
2.925 3.000 3.075
100
150
V
Output Current
Dropout Voltage
Load Regulation
mA
mV
mV
VDIF
IOUT=30mA
VDD=5.0V
500
50
850
100
V
/
/
D
D
OUT
I
1mA I
50mA
D
£
OUT
OUT£
V
Line Regulation
IOUT=10mA
VOUT+0.5V V 10V
£
0.1
50
0.2
%/V
OUT
V
D
£
DD
DD
Ilim
Current Limit (Short mode)
Output Voltage Temperature
Coefficient
VOUT=0V
OUT=10mA
-40 C Topt 85 C
10
100
mA
ppm/
C
°
V
/
I
100
±
D
OUT
Topt
D
° £
£
°
-VDET
VHYS
Detector Threshold
Hysteresis Range
2.633 2.700 2.767
0.081 0.135 0.189
0.02
V
V
V
VDETMGN Regulator Voltage Margin against
Released Voltage
VOUT-((-VDET)+VHYS),
IOUT=10mA
-V
/
Detector Threshold
Temperature Coefficient
Reset Delay Time
-40 C Topt 85 C
° £
100
14
100
10
ppm/
C
°
ms
ms
ms
V
V
V
V
D
£
°
±
DET
Topt
tpr
D
VDD=5.0V, CD=0.001 F
VDD=5.0V, CW=0.01 F
VDD=5.0V, CW=0.01 F
7
50
5
21
150
15
m
m
m
twd
twr
Watch Time of WDT
Reset Hold Time of WDT
SCK Input Voltage " H "
SCK Input Voltage " L "
CE Input Voltage " H "
CE Input Voltage " L "
SCK Input Current " H "
SCK Input Current " L "
CE Pull-up Resistance
CD Pin Output Current
CTW Pin Output Current
RESET Pin Output Current
RESET Pin Leakage Current
VIHSCK
VILSCK
VIHCE
VILCE
IIHSCK
IILSCK
Rpu
ICD
ICTW
IRESET
Ileak
tsckw
Vstart
VDD=5.0V
VDD=5.0V
0.8 V
VDD
´
OUT
0
1.2
0
-1
-1
2
1
1
1
-1
500
0.2 V
´
OUT
VDD
0.2
1
1
10
VDD=SCK=5.0V
VDD=5.0V, SCK=GND
A
m
A
m
4
2
2
2
M
W
VDD=1.3V,VDS=0.5V
VDD=1.3V,VDS=0.5V
mA
mA
mA
A
m
ns
VDD=1.3V,VDS=0.5V
VDD=10.0V,CE=GND,VDS=12.0V
1
SCK Input Pulse Width
Minimum Operating Voltage of Voltage Detector
VDD=5.0V, CW=0.01 F
m
0.9
1.3
V
12345
Rev. 1.10
- 4 -
R5101G002A
Topt=25 C
l
°
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
VDD
Operating Voltage
10
Iss-On
Supply Current (WDT active)
VDD=CE5.3V
VDD=5.3V, CE=GND
VDD=5.3V, IOUT=10mA
VDD=5.3V
5
6
15
A
A
m
m
Iss-Off Supply Current (WDT inactive)
18
VOUT
IOUT
VDIF
Output Voltage
Output Current
Dropout Voltage
Load Regulation
3.218
50
3.300
3.382
V
mA
mV
mV
IOUT=30mA
100
500
50
650
100
V
/
/
VDD=5.3V
D
OUT
I
1mA I
50mA
D
£
OUT
OUT£
V
Line Regulation
IOUT=10mA
VOUT+0.5V V 10V
£
0.1
50
0.2
%/V
D
OUT
V
D
£
DD
DD
Ilim
Current Limit (Short mode)
VOUT=0V
OUT=10mA
-40 C Topt 85 C
10
100
mA
V
/
Output Voltage Temperature
Coefficient
I
100
±
ppm/
C
°
D
OUT
Topt
D
° £
£
°
-VDET
Detector Threshold
2.925
0.090
0.02
3.000
0.150
3.075
0.210
V
V
V
VHYS
Hysteresis Range
VDETMGN
-V
Regulator Voltage Margin
against Released Voltage
Detector Threshold
Temperature Coefficient
Reset Delay Time
VOUT-((-VDET)+VHYS),
IOUT=10mA
/
-40 C Topt 85 C
° £
100
14
ppm/
C
°
ms
ms
ms
V
D
D
£
°
±
DET
Topt
tpr
VDD=5.3V, CD=0.001 F
7
50
5
21
150
15
m
twd
twr
Watch Time of WDT
Reset Hold Time of WDT
SCK Input Voltage " H "
SCK Input Voltage " L "
CE Input Voltage " H "
CE Input Voltage " L "
VDD=5.3V, CW=0.01 F
100
10
m
VDD=5.3V, CW=0.01 F
m
VIHSCK
VILSCK
VIHCE
VILCE
IIHSCK
IILSCK
Rpu
VDD=5.3V
VDD=5.3V
0.8 V
VDD
´
OUT
0
0.2 V
V
´
OUT
1.2
0
VDD
0.2
1
V
V
SCK Input Current " H "
SCK Input Current " L "
CE Pull-up Resistance
CD Pin Output Current
CTW Pin Output Current
RESET Pin Output Current
RESET Pin Leakage Current
SCK Input Pulse Width
VDD=SCK=5.3V
-1
-1
A
A
m
VDD=5.3V, SCK=GND
1
m
4
2
2
2
M
W
ICD
VDD=1.3V,VDS=0.5V
VDD=1.3V,VDS=0.5V
1
mA
mA
mA
ICTW
1
IRESET
Ileak
VDD=1.3V,VDS=0.5V
1
VDD=10.0V,CE=GND,VDS=12.0V
-1
500
1
A
m
tsckw
Vstart
VDD=5.3V, SCK=GND
ns
V
Minimum Operating Voltage of
Voltage Detector
0.9
1.3
12345
Rev. 1.10
- 5 -
R5101G003A
Topt=25 C
l
°
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
VDD
Operating Voltage
10
Iss-On
Supply Current (WDT active)
VDD=CE=7.0V
VDD=7.0V, CE=GND
VDD=7.0V, IOUT=10mA
VDD=7.0V
7
8
20
A
A
m
m
Iss-Off Supply Current (WDT inactive)
24
VOUT
IOUT
VDIF
Output Voltage
Output Current
Dropout Voltage
Load Regulation
4.875
50
5.000
5.125
V
mA
mV
mV
IOUT=30mA
100
350
50
600
100
V
/
/
VDD=7.0V
D
OUT
I
1mA I
50mA
D
£
OUT
OUT£
V
Line Regulation
IOUT=10mA
0.1
0.2
%/V
D
OUT
V
VOUT+0.5V VDD 10V
D
£
£
DD
Ilim
Current Limit (Short mode)
VOUT=0V
10
50
100
mA
V
/
Output Voltage Temperature
Coefficient
I
OUT=10mA
100
±
ppm/
C
°
D
OUT
Topt
-40 C Topt 85 C
° £
D
£
°
-VDET
Detector Threshold
4.388
0.135
0.02
4.500
0.225
4.590
0.315
V
V
V
VHYS
Hysteresis Range
VDETMGN
-V
Regulator Voltage Margin
against Released Voltage
Detector Threshold
Temperature Coefficient
Reset Delay Time
VOUT-((-VDET)+VHYS),
IOUT=10mA
/
-40 C Topt 85 C
° £
100
14
ppm/
C
°
ms
ms
ms
V
D
D
£
°
±
DET
Topt
tpr
VDD=7.0V, CD=0.001 F
7
50
5
21
150
15
m
twd
twr
Watch Time of WDT
Reset Hold Time of WDT
SCK Input Voltage " H "
SCK Input Voltage " L "
CE Input Voltage " H "
CE Input Voltage " L "
VDD=7.0V, CW=0.01 F
100
10
m
VDD=7.0V, CW=0.01 F
m
VIHSCK
VILSCK
VIHCE
VILCE
IIHSCK
IILSCK
Rpu
VDD=7.0V
VDD=7.0V
0.8 V
VDD
´
OUT
0
0.2 V
V
´
OUT
1.2
0
VDD
0.2
1
V
V
SCK Input Current " H "
SCK Input Current " L "
CE Pull-up Resistance
CD Pin Output Current
CTW Pin Output Current
RESET Pin Output Current
RESET Pin Leakage Current
VDD=SCK=7.0V
-1
-1
2
A
m
m
VDD=7.0V, SCK=GND
1
A
4
2
2
2
10
M
W
ICD
VDD=1.3V, VDS=0.5V
VDD=1.3V, VDS=0.5V
VDD=1.3V, VDS=0.5V
1
mA
mA
mA
ICTW
1
IRESET
Ileak
1
VDD=10.0V, CE=GND,
VDS=12.0V
-1
1
A
m
tsckw
Vstart
SCK Input Pulse Width
VDD=7.0V, SCK=GND
500
ns
V
Minimum Operating Voltage of
Voltage Detector
0.9
1.3
12345
Rev. 1.10
- 6 -
R5101G004A
Topt=25 C
l
°
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
VDD
Operating Voltage
10
Iss-On
Supply Current (WDT active)
VDD=CE=7.0V
VDD=7.0V, CE=GND
VDD=7.0V,IOUT=10mA
VDD=7.0V
7
8
20
A
A
m
m
Iss-Off Supply Current (WDT inactive)
24
VOUT
IOUT
VDIF
Output Voltage
Output Current
Dropout Voltage
Load Regulation
4.875
50
5.000
5.125
V
mA
mV
mV
IOUT=30mA
100
350
50
650
100
V
/
/
VDD=7.0V
D
OUT
I
1mA I
50mA
D
£
OUT
OUT£
V
Line Regulation
IOUT=10mA
0.1
0.2
%/V
D
OUT
V
VOUT+0.5V V 10V
D
£
£
DD
DD
Ilim
Current Limit (Short mode)
VOUT=0V
OUT=10mA
-40 C Topt 85 C
10
50
100
mA
V
/
Output Voltage Temperature
Coefficient
I
100
±
ppm/
C
°
D
OUT
Topt
D
° £
£
°
-VDET
Detector Threshold
2.145
0.066
0.02
2.200
0.110
2.255
0.154
V
V
V
VHYS
Hysteresis Range
VDETMGN
-V
Regulator Voltage Margin
against Released Voltage
Detector Threshold
Temperature Coefficient
Reset Delay Time
VOUT-((-VDET)+VHYS),
IOUT=10mA
/
-40 C Topt 85 C
° £
100
14
ppm/
C
°
ms
ms
ms
V
D
D
£
°
±
DET
Topt
tpr
VDD=7.0V, CD=0.001 F
7
50
5
21
150
15
m
twd
twr
Watch Time of WDT
Reset Hold Time of WDT
SCK Input Voltage " H "
SCK Input Voltage " L "
CE Input Voltage " H "
CE Input Voltage " L "
VDD=7.0V, CW=0.01 F
100
10
m
VDD=7.0V, CW=0.01 F
m
VIHSCK
VILSCK
VIHCE
VILCE
IIHSCK
IILSCK
Rpu
VDD=7.0V
VDD=7.0V
0.8 V
VDD
´
OUT
0
0.2 V
V
´
OUT
1.2
0
VDD
0.2
1
V
V
SCK Input Current " H "
SCK Input Current " L "
CE Pull-up Resistance
CD Pin Output Current
CTW Pin Output Current
RESET Pin Output Current
RESET Pin Leakage Current
SCK Input Pulse Width
VDD=SCK=7.0V
-1
-1
2
A
m
m
VDD=7.0V, SCK=GND
1
A
4
2
2
2
10
M
W
ICD
VDD=1.3V, VDS=0.5V
VDD=1.3V, VDS=0.5V
1
mA
mA
mA
ICTW
1
IRESET
Ileak
VDD=1.3V, VDS=0.5V
1
VDD=10.0V,CE=GND,VDS=12.0V
-1
500
1
A
m
tsckw
VDD=7.0V, SCK=GND
ns
Vstart
Minimum Operating Voltage of
Voltage Detector
0.9
1.3
V
12345
Rev. 1.10
- 7 -
R5101G005A
Topt=25 C
l
°
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
VDD
Operating Voltage
10
Iss-On
Supply Current (WDT active)
VDD=CE=4.8V
VDD=4.8V, CE=GND
VDD=4.8V, IOUT=10mA
VDD=4.8V, IOUT=10mA
IOUT=10mA
5
6
15
A
A
m
m
Iss-Off Supply Current (WDT inactive)
18
VOUT
IOUT
VDIF
Output Voltage
Output Current
Dropout Voltage
Load Regulation
2.730
50
2.800
2.870
V
mA
mV
mV
100
350
50
650
100
V
/
/
VDD=4.8V
D
OUT
I
1mA I
50mA
D
£
OUT
OUT£
V
Line Regulation
IOUT=10mA
0.1
0.2
%/V
D
OUT
V
VOUT+0.5V V 10V
D
£
£
DD
DD
Ilim
Current Limit (Short mode)
VOUT=0V
OUT=10mA
-40 C Topt 85 C
10
50
100
mA
V
/
Output Voltage Temperature
Coefficient
I
100
±
ppm/
C
°
D
OUT
Topt
D
° £
£
°
-VDET
Detector Threshold
2.340
0.072
0.02
2.400
0.120
2.460
0.168
V
V
V
VHYS
Hysteresis Range
VDETMGN
-V
Regulator Voltage Margin
against Released Voltage
Detector Threshold
Temperature Coefficient
Reset Delay Time
VOUT-((-VDET)+VHYS),
IOUT=10mA
/
-40 C Topt 85 C
° £
100
14
ppm/
C
°
ms
ms
ms
V
D
D
£
°
±
DET
Topt
tpr
VDD=4.8V, CD=0.001 F
7
50
5
21
150
15
m
twd
twr
Watch Time of WDT
Reset Hold Time of WDT
SCK Input Voltage " H "
SCK Input Voltage " L "
CE Input Voltage " H "
CE Input Voltage " L "
SCK Input Current " H "
VDD=4.8V, CW=0.01 F
100
10
m
VDD=4.8V, CW=0.01 F
m
VIHSCK
VILSCK
VIHCE
VILCE
IIHSCK
IILSCK
Rpu
VDD=4.8V
VDD=4.8V
0.8 V
VDD
´
OUT
0
0.1 V
V
´
OUT
1.2
0
VDD
0.2
1
V
V
VDD=SCK=4.8V
-1
-1
A
m
m
VDD=4.8V, SCK=GND
1
A
SCK Input Current L
“
“
CE Pull-up Resistance
CD Pin Output Current
4
2
2
2
M
W
ICD
VDD=1.3V, VDS=0.5V
VDD=1.3V, VDS=0.5V
VDD=1.3V, VDS=0.5V
VDD=10.0V,CE=GND,VDS=12.0V
1
1
1
mA
mA
mA
ICTW
CTW Pin Output Current
RESET Pin Output Current
IRESET
Ileak
RESET Pin Leakage Current
SCK Input Pulse Width
-1
1
A
m
tsckw
VDD=4.8V, SCK=GND
500
ns
V
Vstart
Minimum Operating Voltage of
Voltage Detector
0.9
1.3
12345
Rev. 1.10
- 8 -
n TYPICAL APPLICATION
R5101GXXX Series
Micro Processor
DOUT
RESET
SCK
CD(0.001mF)
CD
CE
RESET
VDD
GND
CTW
510kW
VDD
CW(0.01mF)
1mF
VOUT
1mF
n TECHNICAL NOTES
Use 0.01mF or more value of an external capacitor, CW for setting monitoring time of watchdog timer.
Use 1 or 2.2mF capacitor between VDD and GND, and between VOUT and GND and make its wiring as short as
possible.
12345
Rev. 1.10
- 9 -
n OPERATION DIAGRAM
VDD
Vstart
+Vdet
-Vdet
Detector Threshold Hysteresis
VOUT
tpr
Vref2H
CD
twd twr
Vref2H
CTW
Vref2L
tsckw
SCK
CE
RESET
¬ • ® ¯
°
°
± ²
± ²
°
³ • ®
°
´
´
³
12345
Rev. 1.10
- 10 -
n OPERATION
¬ When VDD is turned on and Input Voltage reaches Vstart (nearly equal 0.8V), the output of RESET pin
becomes “L” level.
• An External Capacitor starts to be charged through the CD pin when an Output Voltage of the Voltage
Regulator, VOUT, crosses the Released Voltage , +VDET , from Lower to Higher . The VRESET is kept “L” level
until Voltage of the CD pin , VCD , reaches to the Vref2H , about 1.0V , and after that the VRESET becomes to
“H” level.
\ tPR : Time interval between the timing of starting edge of forcing voltage to VDD pin and the timing of
reverse the voltage level of VRESET .
tPR can be set by connecting an external capacitor to CD pin, tPR can be calculated as shown below;
tPR (ms) » 13000´ CD (mF) ; CD means a value of an external capacitor connected to CD pin.
® When the voltage level of VCD reaches to the Vref2H, the external capacitor starts to be charged through
the CTW pin and the watchdog timer begins to operate.
¯ The operation mode for the external capacitor changes from charging mode to discharging mode through
CTW pin when the voltage level of CTW pin , VCTW , reaches to the Vref2H.
° While the CTW pin is on the discharging mode, if a clock pulse is entered (synchronous with a rising edge
of the pulse), the operation mode of CTW pin changes from charging mode to discharging mode. And
the external capacitor connected to CTW pin is charged until its voltage level reaches to Vref2H.
± While the CTW pin is on the discharging mode, if VCTW level drops to Vref2L, about 0.2V without clock
pulse to CLK pin, the voltage level of Reset pin becomes from “H” to “L”.
\ Watch Time of the watchdog timer , tWD , : Discharging Time of CTW pin level from Vref2H to Vref2L
tWD can be set by connecting an external capacitor to CW pin, tWD can be calculated as shown below;
tWD (ms) » 10000´ CW (mF); Cw means a value of an external capacitor connected to Cw pin.
² CTW pin is changed to charging mode from discharging mode when the Reset signal is generated.
\ Reset time of the watchdog timer , tWR , : Time interval between Charging time of the CTW pin from Vref2L
to Vref2H. tWR can be calculated by the next equation as shown below;
tWR (ms) » tWD/10
³ The Output Voltage level of Reset pin becomes from “H” to “L”, or a Reset signal is generated when an
output voltage of the Voltage Regulator drops to a level at equal or less than -Vdet.
´ The watchdog timer will be halted when a Voltage level of CE pin becomes to “L”. In this case, only the
watchdog timer is stopped and monitoring the output voltage is continued. After that, if the voltage level of CE
pin becomes to “H”, CTW pin starts to be on charging mode.
12345
Rev. 1.10
- 11 -
n TEST CIRCUITS
Test Circuit of Supply Current
Test Circuit of Output Voltage
RESET
SCK
CD
RESET
CE
SCK
CD
CE
GND
VOUT
CTW
VDD
GND
VOUT
CTW
VDD
A
V
IOUT
Test Circuit of Monitoring Time of WDT and
RESET Time
Test Circuit of Detector Threshold(VDET)
470k
470k
RESET
CE
SCK
CD
oscilloscope
RESET
CE
SCK
CD
GND
VOUT
CTW
VDD
GND
VOUT
CTW
VDD
12345
Rev. 1.10
- 12 -
Test Circuit of SCK Input Current
Test Circuit of Output Current
RESET
CE
SCK
CD
RESET
CE
SCK
CD
A
GND
VOUT
CTW
VDD
GND
VOUT
CTW
VDD
A
Test Circuit of Minimum Input Voltage
for RESET Output
Test Circuit of RESET Output leakage Current
470K
RESET
CE
SCK
CD
RESET
CE
SCK
CD
V
GND
VOUT
CTW
VDD
GND
VOUT
CTW
VDD
A
12345
Rev. 1.10
- 13 -
n TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
VDD=7V
R5101G003A,004A
R5101G001A
VDD=5V
3.5
6.0
5.0
4.0
3.0
2.0
1.0
0.0
3.0
2.5
2.0
85
°C
-40
°C
85
-40
°C
°C
°C
0
1.5
1.0
0.5
0.0
25
°C
0
50
100
150
200
0
100
200
300
400
Output Current IOUT(mA)
Output Current IOUT(mA)
2) Output Voltage vs. Input Voltage
R5101G001A Topt=25
Topt=25
R5101G003A,004A
°C
°C
3.2
5.2
3.1
5.1
5.0
4.9
4.8
0mA
0mA
3.0
30mA
30mA
10mA
2.9
10mA
2.8
2
3
4
5
6
7
8
9
10
4
5
6
7
8
9
10
Input Voltage VDD(V)
Input Voltage VDD(V)
3) Dropout Voltage vs. Output Current
R5101G001A
R5101G003A, 004A
VDD=7.0V
1.0
1.0
0.8
0.6
0.4
0.2
0.0
0.8
85
°C
°C
0.6
0.4
0.2
0.0
85
°C
-40
25
°C
°C
°C
25
-40
10
20
30
40
50
0
10
20
30
40
Output Current IOUT(mA)
Output Current IOUT(mA)
12345
Rev. 1.10
- 14 -
4) Output Voltage vs. Temperature
R5101G001A
V
DD=5V
R5101G003A,004A
VDD=7.0V,IOUT=10mA
5.10
5.05
5.00
4.95
4.90
3.10
3.05
3.00
2.95
2.90
-50
-25
0
25
50
75
(°C)
100
-50
-25
0
25
50
(°C)
75
100
Temperature Topt
Temperature Topt
5) RESET Pin Voltage vs. Input Voltage
Pull-up 510k
6) Detector Threshold vs. Temperature
R5101G001A
R5101G001A
W
2.90
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.85
+VDET
2.80
2.75
°C
-40
2.70
85
°C
-VDET
2.65
2.60
°C
25
-50
-25
0
25
50
75
(°C)
100
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Temperature Topt
Input Voltage VDD(V)
7) CD Pin Output Current vs. Input Voltage
8) CTW Pin Output Current vs. Input Voltage
VDS=0.5V
R5101G001A
R5101G001A
VDS=0.5V
12
10
8
12
10
8
-40°C
-40
°C
6
6
25
°C
25
°C
4
4
2
2
85°C
85
°C
0
0
0
1
2
3
0
1
2
3
Input Voltage VDD(V)
Input Voltage VDD(V)
12345
Rev. 1.10
- 15 -
9) RESET Pin Output Current vs. Input Voltage
10) Delay Time of Released Voltage vs. Temperature
R5101G001A
VDS=0.5V
R5101G001A
22
12
10
8
20
18
16
14
12
10
8
°C
-40
6
25
°C
4
6
4
2
85
°C
2
0
0
-50
-25
0
25
50
75
100
0
0.5
1
1.5
2
2.5
3
Input Voltage VDD(V)
Temperature Top(t°C)
11) Monitoring Time of Watchdog Timer vs. Temperature 12) Reset Time of Watchdog Timer vs. Temperature
R5101G001A
R5101G001A
16
14
12
10
8
160
140
120
100
80
6
60
4
40
2
20
0
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
(°C)
Temperature Topt (°C)
Temperature Topt
13) tpr vs. External Capacitance of Cd Pin
14) twd, twr vs. External Capacitance of Ctw Pin
100000
10000
1000
100
100000
10000
twd
1000
100
twr
10
10
1
1
0.1
1.E-09
1.E-08
1.E-07
1.E-06
1.E-08
1.E-07
1.E-06
External Capacitance of CD Pin(F)
External Capacitance of CTW Pin(F)
12345
Rev. 1.10
- 16 -
15) CE Pull-up Resistance vs. Temperature
R5101G001A
10
9
8
7
6
5
4
3
2
1
0
-50
-25
0
25
50
75
(°C)
100
Temperature Topt
16) Supply Current vs. Input Voltage (WDT ON)
17) Supply Current vs. Temperature (WDT ON)
R5101G001A
R5101G001A Topt=25
°C
VDD=5V
15
12
9
15
12
9
6
6
3
3
0
0
3
4
5
6
7
8
9
10
-50
-25
0
25
50
(°C)
75
100
Input Voltage VDD(V)
Temperature Topt
18) Supply Current vs. Input Voltage (WDT OFF)
19) Supply Current vs. Temperature (WDT OFF)
R5101G001A
DD=5V
°C
Topt=25
R5101G001A
V
18
15
12
9
18
15
12
9
6
6
3
3
0
0
-50
-25
0
25
50
75
(°C)
100
3
4
5
6
7
8
9
10
DD
Input Voltage V (V)
Temperature Topt
12345
Rev. 1.10
- 17 -
相关型号：
R5101GXXXA-TR
Power Supply Management Circuit, Adjustable, 1 Channel, CMOS, PDSO8, HALOGEN FREE AND ROHS COMPLIANT, SSOP-8
RICOH
R5104V002A-E2-F
Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDSO10, 3.10 X 6.40 MM, 0.50 MM PITCH, LEAD FREE, SSOP-10
RICOH
©2020 ICPDF网 联系我们和版权申明