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R5101G001A
Datasheet
17 pgs338.5 Kb0

RICOH R5101G001A, R5101G002A, R5101G003A, R5101G004A, R5101G005A Datasheet

‘99.12.3
r
12345
Microprocessor power management with Watchdog Time
R5101G Series
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(C 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(C
FEATURES
D
).
TW
).
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
APPLICATION
l Power source for microprocessors
PIN CONFIGURATION
SSOP8G(0.65mm pitch)
SCK
Reset
C
D
C
TW
V
DD
Rev. 1.10 - 1 -
CE GND
V
OUT
12345
n
PACKAGE DIMENSIONS
SSOP8G
0.65
2.9±0.1
0.2
0.3
±
±
2.8
4.0
Unit : mm
BLOCK DIAGRAMS
TW
CE
D
8
3
7
2
RESET
C
C
WDT
Vref2
+
-
­+
Level Shift
+
-
Vref1
1
SCK
4
V
DD
5
V
OUT
Rev. 1.10 - 2 -
12345
6
GND
PIN DESCRIPTION
Pin No. Symbol Description
1 SCK Clock Input Pin from Microprocessor 2 CD External Capacitor Pin for Setting Delay Time of Voltage Detector 3 CTW External Capacitor Pin for Setting Monitoring Time and Reset Time of Watchdog timer 4VDDPower supply Pin 5V 6 GND Ground Pin 7 CE Control Switch Pin for Watchdog timer ( "H" active, "L" inactive) 8 RESET Output Pin for Reset signal of Watchdog timer and Voltage Detector.(Output Type is Nch
ABSOLUTE MAXIMUM RATINGS
Output Pin for Voltage Regulator
OUT
Open Drain, Output "L" at detecting Detector Threshold and Watchdog Timer Reset. )
Topt=25°C, Vss=0V
Symbol Item Rating Unit
V V
V
CTW
V
OUT
V
RESET
V
V
SCK
I
OUT
I
RESET
P
T
T
DD CD
CE
D opt stg
Supply Voltage -0.3~12 V
Vss-0.3~VDD+0.3 V Vss-0.3~VDD+0.3 V Vss-0.3~VDD+0.3 V
Vss-0.3~12 V Vss-0.3~VDD+0.3 V Vss-0.3~VDD+0.3 V
150 mA
10 mA
Output Voltage
Input Voltage
Output Current
Voltage of CD Pin Voltage of CTW Pin Voltage of V Voltage of RESET Pin Voltage of CE Pin Voltage of SCK Pin Current of V Current of RESET Pin
OUT
OUT
Pin
Pin
Power Dissipation 300 mW Operating Temperature Range -40~+85 Storage Temperature Range -55~+125
C
°
C
°
Rev. 1.10 - 3 -
12345
ELECTRICAL CHARACTERISTICS
lR5101G001A Topt=25°C
Symbol Item Conditions MIN. TYP. MAX. Unit
V
DD
Operating Voltage 10 V Iss-On Supply Current (WDT active) VDD=CE=5.0V 5 15 Iss-Off Supply Current (WDT inactive) VDD=5.0V, CE=GND 6 18
V
OUT
I
OUT
V
DIF
V
D
D
/
OUT
I
D
OUT
V
/
OUT
V
D
DD
Ilim Current Limit (Short mode) V
V
D
OUT
Topt
D
-V
DET
V
HYS
V
DETMGN
-V
D
DET
Topt
D
/
/
Output Voltage Temperature
Detector Threshold 2.633 2.700 2.767 V
Regulator Voltage Margin against
Output Voltage VDD=5.0V,I
=10mA 2.925 3.000 3.075 V
OUT
Output Current VDD=5.0V 100 mA
Dropout Voltage I
Load Regulation VDD=5.0V
1mA
Line Regulation I
V
OUT
Coefficient
-40
=30mA 150 500 850 mV
OUT
50 100 mV
I
£
OUT
+0.5V£V
I
OUT
°C£
50mA
OUT
£
=10mA
10V
£
DD
=0V 10 50 100 mA
OUT
=10mA
0.1 0.2 %/V
100 ppm/
±
Topt£85°C
Hysteresis Range 0.081 0.135 0.189 V
0.02 V 100 ppm/
±
Released Voltage
Detector Threshold
V
OUT
-40
-((-V
DET
=10mA
I
OUT
Topt£85°C
°C£
)+V
HYS
),
Temperature Coefficient
tpr Reset Delay Time VDD=5.0V, CD=0.001mF 7 14 21 ms
twd Watch Time of WDT VDD=5.0V, CW=0.01mF 50 100 150 ms
twr Reset Hold Time of WDT VDD=5.0V, CW=0.01mF 5 10 15 ms
V
IHSCK
V
ILSCK
V
IHCE
V
ILCE
I
IHSCK
I
ILSCK
SCK Input Voltage " H " VDD=5.0V 0.8´V
OUT
SCK Input Voltage " L " VDD=5.0V 0 0.2´V
CE Input Voltage " H " 1.2 V
V
DD
OUT
DD
CE Input Voltage " L " 0 0.2 V
SCK Input Current " H " VDD=SCK=5.0V -1 1
SCK Input Current " L " VDD=5.0V, SCK=GND -1 1
Rpu CE Pull-up Resistance 2 4 10 M
I
CD
I
CTW
I
RESET
Ileak RESET Pin Leakage Current
CD Pin Output Current VDD=1.3V,VDS=0.5V 1 2 mA
CTW Pin Output Current VDD=1.3V,VDS=0.5V 1 2 mA
RESET Pin Output Current VDD=1.3V,VDS=0.5V 1 2 mA
VDD=10.0V,CE=GND,VDS=12.0V
-1 1
tsckw SCK Input Pulse Width VDD=5.0V, CW=0.01mF 500 ns
Vstart
Minimum Operating Voltage of Voltage Detector
0.9 1.3 V
A
m
A
m
C
°
C
°
V V V
A
m
A
m
W
A
m
12345
Rev. 1.10 - 4 -
R5101G002A Topt=25°C
l
Symbol Item Conditions MIN. TYP. MAX. Unit
V
DD
Operating Voltage 10 V Iss-On Supply Current (WDT active) VDD=CE5.3V 5 15 Iss-Off Supply Current (WDT inactive) VDD=5.3V, CE=GND 6 18
V
OUT
I
OUT
V
DIF
V
D
D
/
OUT
I
D
OUT
V
/
OUT
V
D
DD
Ilim Current Limit (Short mode) V
Output Voltage VDD=5.3V, I
=10mA 3.218 3.300 3.382 V
OUT
Output Current VDD=5.3V 50 mA
Dropout Voltage I
Load Regulation VDD=5.3V
1mA
Line Regulation I
V
OUT
=30mA 100 500 650 mV
OUT
50 100 mV
I
50mA
£
OUT
£
=10mA
OUT
+0.5V£V
OUT
10V
£
DD
=0V 10 50 100 mA
0.1 0.2 %/V
A
m
A
m
V
D
OUT
Topt
D
-V
DET
V
HYS
V
DETMGN
-V
D
DET
Topt
D
Output Voltage Temperature
/
Coefficient
Detector Threshold 2.925 3.000 3.075 V
Hysteresis Range 0.090 0.150 0.210 V
Regulator Voltage Margin against Released Voltage
/
Detector Threshold
Temperature Coefficient
V
-40
OUT
-40
I
=10mA
OUT
Topt£85°C
°C£
-((-V
DET
=10mA
I
OUT
Topt£85°C
°C£
)+V
HYS
100 ppm/
±
),
0.02 V 100 ppm/
±
tpr Reset Delay Time VDD=5.3V, CD=0.001mF 7 14 21 ms
twd Watch Time of WDT VDD=5.3V, CW=0.01mF 50 100 150 ms
twr Reset Hold Time of WDT VDD=5.3V, CW=0.01mF 5 10 15 ms
V
IHSCK
V
ILSCK
V
IHCE
V
ILCE
I
IHSCK
I
ILSCK
SCK Input Voltage " H " VDD=5.3V 0.8´V
OUT
SCK Input Voltage " L " VDD=5.3V 0 0.2´V
CE Input Voltage " H " 1.2 V
V
DD
OUT
DD
CE Input Voltage " L " 0 0.2 V
SCK Input Current " H " VDD=SCK=5.3V -1 1
SCK Input Current " L " VDD=5.3V, SCK=GND -1 1
Rpu CE Pull-up Resistance 4 M
I
CD
CD Pin Output Current VDD=1.3V,VDS=0.5V 1 2 mA
C
°
C
°
V V V
A
m
A
m
W
I
CTW
I
RESET
Ileak RESET Pin Leakage Current
CTW Pin Output Current VDD=1.3V,VDS=0.5V 1 2 mA
RESET Pin Output Current VDD=1.3V,VDS=0.5V 1 2 mA
VDD=10.0V,CE=GND,VDS=12.0V
-1 1
tsckw SCK Input Pulse Width VDD=5.3V, SCK=GND 500 ns
Vstart Minimum Operating Voltage of
0.9 1.3 V
Voltage Detector
12345
Rev. 1.10 - 5 -
A
m
R5101G003A Topt=25°C
l
Symbol Item Conditions MIN. TYP. MAX. Unit
V
DD
Operating Voltage 10 V Iss-On Supply Current (WDT active) VDD=CE=7.0V 7 20 Iss-Off Supply Current (WDT inactive) VDD=7.0V, CE=GND 8 24
V
OUT
I
OUT
V
DIF
V
D
D
/
OUT
I
D
OUT
V
/
OUT
V
D
DD
Ilim Current Limit (Short mode) V
Output Voltage VDD=7.0V, I
=10mA 4.875 5.000 5.125 V
OUT
Output Current VDD=7.0V 50 mA
Dropout Voltage I
Load Regulation VDD=7.0V
1mA
Line Regulation I
V
OUT
=30mA 100 350 600 mV
OUT
50 100 mV
I
50mA
£
OUT
£
OUT
=10mA
0.1 0.2 %/V
+0.5V£VDD£10V
=0V 10 50 100 mA
OUT
A
m
A
m
V
D
OUT
Topt
D
-V
DET
V
HYS
V
DETMGN
-V
D
DET
Topt
D
Output Voltage Temperature
/
Coefficient
Detector Threshold 4.388 4.500 4.590 V
Hysteresis Range 0.135 0.225 0.315 V
Regulator Voltage Margin against Released Voltage
/
Detector Threshold
Temperature Coefficient
V
-40
OUT
-40
I
=10mA
OUT
Topt£85°C
°C£
-((-V
DET
=10mA
I
OUT
Topt£85°C
°C£
)+V
HYS
100 ppm/
±
),
0.02 V 100 ppm/
±
tpr Reset Delay Time VDD=7.0V, CD=0.001mF 7 14 21 ms
twd Watch Time of WDT VDD=7.0V, CW=0.01mF 50 100 150 ms
twr Reset Hold Time of WDT VDD=7.0V, CW=0.01mF 5 10 15 ms
V
IHSCK
V
ILSCK
V
IHCE
V
ILCE
I
IHSCK
I
ILSCK
SCK Input Voltage " H " VDD=7.0V 0.8´V
OUT
SCK Input Voltage " L " VDD=7.0V 0 0.2´V
CE Input Voltage " H " 1.2 V
V
DD
OUT
DD
CE Input Voltage " L " 0 0.2 V
SCK Input Current " H " VDD=SCK=7.0V -1 1
SCK Input Current " L " VDD=7.0V, SCK=GND -1 1
Rpu CE Pull-up Resistance 2 4 10 M
I
CD
CD Pin Output Current VDD=1.3V, VDS=0.5V 1 2 mA
C
°
C
°
V V V
A
m
A
m
W
I
CTW
I
RESET
Ileak RESET Pin Leakage Current
CTW Pin Output Current VDD=1.3V, VDS=0.5V 1 2 mA
RESET Pin Output Current VDD=1.3V, VDS=0.5V 1 2 mA
VDD=10.0V, CE=GND,
VDS=12.0V
-1 1
tsckw SCK Input Pulse Width VDD=7.0V, SCK=GND 500 ns
Vstart Minimum Operating Voltage of
0.9 1.3 V
Voltage Detector
12345
Rev. 1.10 - 6 -
A
m
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