12345 |
‘99.12.3 |
|
|
|
|
Microprocessor power management with Watchdog Timer |
||
R5101G Series
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
lBuilt-in a watchdog timer
lTime period for monitoring and generating a reset signal of the watchdog timer can be set by an external capacitor
lWatchdog timer can be stopped individually by CE Pin
lLow supply current · · · · · · · · · · · · · · · · · · · · · · ·TYP. 5µA
lThe 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) |
||||||
SCK |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reset |
|||||
CD |
|
|
|
|
|
|
|
CE |
|
|
|
|
|
|
|
|
|||
CTW |
|
|
|
|
|
|
|
GND |
|
|
|
|
|
|
|
|
|||
VDD |
|
|
|
|
|
|
|
VOUT |
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12345
Rev. 1.10 |
- 1 - |
n PACKAGE DIMENSIONS
SSOP8G
2.8±0.2 4.0±0.3
0.65
2.9±0.1
Unit : mm
n BLOCK DIAGRAMS
RESET 8
W DT
CTW 3
CE 7
+ Vref2
-
-
+
CD 2
Level Shift |
1 |
SCK |
|
|
4 |
VDD |
|
|
5 |
VOUT |
|
|
+ |
|
- |
|
Vref1
6 GND
12345
Rev. 1.10 |
- 2 - |
n 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 |
|
|
|
|
|
|
4 |
|
VDD |
Power supply Pin |
|
|
|
|
|
|
5 |
|
VOUT |
Output Pin for Voltage Regulator |
|
|
|
|
|
|
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 |
|
|
|
|
|
Open Drain, Output "L" at detecting Detector Threshold and Watchdog Timer Reset. ) |
n ABSOLUTE MAXIMUM RATINGS
Topt=25°C, Vss=0V
Symbol |
|
Item |
Rating |
Unit |
||||
VDD |
Supply Voltage |
|
|
|
-0.3~12 |
V |
||
VCD |
|
Voltage of CD Pin |
Vss-0.3~VDD+0.3 |
V |
||||
VCTW |
Output Voltage |
Voltage of CTW Pin |
Vss-0.3~VDD+0.3 |
V |
||||
VOUT |
|
Voltage of VOUT Pin |
Vss-0.3~VDD+0.3 |
V |
||||
|
|
|
|
|
Vss-0.3~12 |
|
||
V |
RESET |
|
|
Voltage of RESET Pin |
V |
|||
VCE |
Input Voltage |
Voltage of CE Pin |
Vss-0.3~VDD+0.3 |
V |
||||
VSCK |
|
Voltage of SCK Pin |
Vss-0.3~VDD+0.3 |
V |
||||
IOUT |
Output Current |
Current of VOUT Pin |
150 |
mA |
||||
|
|
|
|
|
|
|
|
|
IRESET |
|
Current of RESET Pin |
10 |
mA |
||||
|
PD |
Power Dissipation |
300 |
mW |
||||
Topt |
Operating Temperature Range |
-40~+85 |
°C |
|||||
Tstg |
Storage Temperature Range |
-55~+125 |
°C |
|||||
12345
Rev. 1.10 |
- 3 - |
n ELECTRICAL CHARACTERISTICS
lR5101G001A |
|
|
|
Topt=25°C |
||
Symbol |
Item |
Conditions |
MIN. |
TYP. |
MAX. |
Unit |
VDD |
Operating Voltage |
|
|
|
10 |
V |
Iss-On |
Supply Current (WDT active) |
VDD=CE=5.0V |
|
5 |
15 |
mA |
Iss-Off |
Supply Current (WDT inactive) |
VDD=5.0V, CE=GND |
|
6 |
18 |
mA |
VOUT |
Output Voltage |
VDD=5.0V,IOUT=10mA |
2.925 |
3.000 |
3.075 |
V |
IOUT |
Output Current |
VDD=5.0V |
100 |
|
|
mA |
VDIF |
Dropout Voltage |
IOUT=30mA |
150 |
500 |
850 |
mV |
DVOUT/ |
Load Regulation |
VDD=5.0V |
|
50 |
100 |
mV |
DIOUT |
|
1mA£IOUT£50mA |
|
|
|
|
DVOUT/ |
Line Regulation |
IOUT=10mA |
|
0.1 |
0.2 |
%/V |
DVDD |
|
VOUT+0.5V£VDD£10V |
|
|
|
|
Ilim |
Current Limit (Short mode) |
VOUT=0V |
10 |
50 |
100 |
mA |
DVOUT/ |
Output Voltage Temperature |
IOUT=10mA |
|
±100 |
|
ppm/ |
DTopt |
Coefficient |
-40°C£Topt£85°C |
|
|
|
°C |
-VDET |
Detector Threshold |
|
2.633 |
2.700 |
2.767 |
V |
VHYS |
Hysteresis Range |
|
0.081 |
0.135 |
0.189 |
V |
VDETMGN |
Regulator Voltage Margin against |
VOUT-((-VDET)+VHYS), |
0.02 |
|
|
V |
|
Released Voltage |
IOUT=10mA |
|
|
|
|
D-VDET/ |
Detector Threshold |
-40°C£Topt£85°C |
|
±100 |
|
ppm/ |
DTopt |
Temperature Coefficient |
|
|
|
|
°C |
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 |
VIHSCK |
SCK Input Voltage " H " |
VDD=5.0V |
0.8´VOUT |
|
VDD |
V |
VILSCK |
SCK Input Voltage " L " |
VDD=5.0V |
0 |
|
0.2´VOUT |
V |
VIHCE |
CE Input Voltage " H " |
|
1.2 |
|
VDD |
V |
VILCE |
CE Input Voltage " L " |
|
0 |
|
0.2 |
V |
IIHSCK |
SCK Input Current " H " |
VDD=SCK=5.0V |
-1 |
|
1 |
mA |
IILSCK |
SCK Input Current " L " |
VDD=5.0V, SCK=GND |
-1 |
|
1 |
mA |
Rpu |
CE Pull-up Resistance |
|
2 |
4 |
10 |
MW |
ICD |
CD Pin Output Current |
VDD=1.3V,VDS=0.5V |
1 |
2 |
|
mA |
ICTW |
CTW Pin Output Current |
VDD=1.3V,VDS=0.5V |
1 |
2 |
|
mA |
IRESET |
RESET Pin Output Current |
VDD=1.3V,VDS=0.5V |
1 |
2 |
|
mA |
Ileak |
RESET Pin Leakage Current |
VDD=10.0V,CE=GND,VDS=12.0V |
-1 |
|
1 |
mA |
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 |
12345
Rev. 1.10 |
- 4 - |
lR5101G002A |
|
|
|
Topt=25°C |
|
||
Symbol |
Item |
Conditions |
MIN. |
TYP. |
MAX. |
|
Unit |
|
|
|
|
|
|
|
|
VDD |
Operating Voltage |
|
|
|
10 |
|
V |
|
|
|
|
|
|
|
|
Iss-On |
Supply Current (WDT active) |
VDD=CE5.3V |
|
5 |
15 |
|
mA |
|
|
|
|
|
|
|
|
Iss-Off |
Supply Current (WDT inactive) |
VDD=5.3V, CE=GND |
|
6 |
18 |
|
mA |
|
|
|
|
|
|
|
|
VOUT |
Output Voltage |
VDD=5.3V, IOUT=10mA |
3.218 |
3.300 |
3.382 |
|
V |
|
|
|
|
|
|
|
|
IOUT |
Output Current |
VDD=5.3V |
50 |
|
|
|
mA |
|
|
|
|
|
|
|
|
VDIF |
Dropout Voltage |
IOUT=30mA |
100 |
500 |
650 |
|
mV |
|
|
|
|
|
|
|
|
DVOUT/ |
Load Regulation |
VDD=5.3V |
|
50 |
100 |
|
mV |
DIOUT |
|
1mA£IOUT£50mA |
|
|
|
|
|
DVOUT/ |
Line Regulation |
IOUT=10mA |
|
0.1 |
0.2 |
|
%/V |
DVDD |
|
VOUT+0.5V£VDD£10V |
|
|
|
|
|
Ilim |
Current Limit (Short mode) |
VOUT=0V |
10 |
50 |
100 |
|
mA |
|
|
|
|
|
|
|
|
DVOUT/ |
Output Voltage Temperature |
IOUT=10mA |
|
±100 |
|
|
ppm/ |
DTopt |
Coefficient |
-40°C£Topt£85°C |
|
|
|
|
°C |
-VDET |
Detector Threshold |
|
2.925 |
3.000 |
3.075 |
|
V |
|
|
|
|
|
|
|
|
VHYS |
Hysteresis Range |
|
0.090 |
0.150 |
0.210 |
|
V |
|
|
|
|
|
|
|
|
VDETMGN |
Regulator Voltage Margin |
VOUT-((-VDET)+VHYS), |
0.02 |
|
|
|
V |
|
against Released Voltage |
IOUT=10mA |
|
|
|
|
|
D-VDET/ |
Detector Threshold |
-40°C£Topt£85°C |
|
±100 |
|
|
ppm/ |
DTopt |
Temperature Coefficient |
|
|
|
|
|
°C |
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 |
|
|
|
|
|
|
|
|
VIHSCK |
SCK Input Voltage " H " |
VDD=5.3V |
0.8´VOUT |
|
VDD |
|
V |
|
|
|
|
|
|
|
|
VILSCK |
SCK Input Voltage " L " |
VDD=5.3V |
0 |
|
0.2´VOUT |
|
V |
|
|
|
|
|
|
|
|
VIHCE |
CE Input Voltage " H " |
|
1.2 |
|
VDD |
|
V |
|
|
|
|
|
|
|
|
VILCE |
CE Input Voltage " L " |
|
0 |
|
0.2 |
|
V |
|
|
|
|
|
|
|
|
IIHSCK |
SCK Input Current " H " |
VDD=SCK=5.3V |
-1 |
|
1 |
|
mA |
|
|
|
|
|
|
|
|
IILSCK |
SCK Input Current " L " |
VDD=5.3V, SCK=GND |
-1 |
|
1 |
|
mA |
|
|
|
|
|
|
|
|
Rpu |
CE Pull-up Resistance |
|
|
4 |
|
|
MW |
|
|
|
|
|
|
|
|
ICD |
CD Pin Output Current |
VDD=1.3V,VDS=0.5V |
1 |
2 |
|
|
mA |
|
|
|
|
|
|
|
|
ICTW |
CTW Pin Output Current |
VDD=1.3V,VDS=0.5V |
1 |
2 |
|
|
mA |
|
|
|
|
|
|
|
|
IRESET |
RESET Pin Output Current |
VDD=1.3V,VDS=0.5V |
1 |
2 |
|
|
mA |
|
|
|
|
|
|
|
|
Ileak |
RESET Pin Leakage Current |
VDD=10.0V,CE=GND,VDS=12.0V |
-1 |
|
1 |
|
mA |
|
|
|
|
|
|
|
|
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 - |
lR5101G003A |
|
|
|
Topt=25°C |
|
||
Symbol |
Item |
Conditions |
MIN. |
TYP. |
|
MAX. |
Unit |
|
|
|
|
|
|
|
|
VDD |
Operating Voltage |
|
|
|
|
10 |
V |
|
|
|
|
|
|
|
|
Iss-On |
Supply Current (WDT active) |
VDD=CE=7.0V |
|
7 |
|
20 |
mA |
|
|
|
|
|
|
|
|
Iss-Off |
Supply Current (WDT inactive) |
VDD=7.0V, CE=GND |
|
8 |
|
24 |
mA |
|
|
|
|
|
|
|
|
VOUT |
Output Voltage |
VDD=7.0V, IOUT=10mA |
4.875 |
5.000 |
|
5.125 |
V |
|
|
|
|
|
|
|
|
IOUT |
Output Current |
VDD=7.0V |
50 |
|
|
|
mA |
|
|
|
|
|
|
|
|
VDIF |
Dropout Voltage |
IOUT=30mA |
100 |
350 |
|
600 |
mV |
|
|
|
|
|
|
|
|
DVOUT/ |
Load Regulation |
VDD=7.0V |
|
50 |
|
100 |
mV |
DIOUT |
|
1mA£IOUT£50mA |
|
|
|
|
|
DVOUT/ |
Line Regulation |
IOUT=10mA |
|
0.1 |
|
0.2 |
%/V |
DVDD |
|
VOUT+0.5V£VDD£10V |
|
|
|
|
|
Ilim |
Current Limit (Short mode) |
VOUT=0V |
10 |
50 |
|
100 |
mA |
|
|
|
|
|
|
|
|
DVOUT/ |
Output Voltage Temperature |
IOUT=10mA |
|
±100 |
|
|
ppm/ |
DTopt |
Coefficient |
-40°C£Topt£85°C |
|
|
|
|
°C |
-VDET |
Detector Threshold |
|
4.388 |
4.500 |
|
4.590 |
V |
|
|
|
|
|
|
|
|
VHYS |
Hysteresis Range |
|
0.135 |
0.225 |
|
0.315 |
V |
|
|
|
|
|
|
|
|
VDETMGN |
Regulator Voltage Margin |
VOUT-((-VDET)+VHYS), |
0.02 |
|
|
|
V |
|
against Released Voltage |
IOUT=10mA |
|
|
|
|
|
D-VDET/ |
Detector Threshold |
-40°C£Topt£85°C |
|
±100 |
|
|
ppm/ |
DTopt |
Temperature Coefficient |
|
|
|
|
|
°C |
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 |
|
|
|
|
|
|
|
|
VIHSCK |
SCK Input Voltage " H " |
VDD=7.0V |
0.8´VOUT |
|
|
VDD |
V |
|
|
|
|
|
|
|
|
VILSCK |
SCK Input Voltage " L " |
VDD=7.0V |
0 |
|
|
0.2´VOUT |
V |
|
|
|
|
|
|
|
|
VIHCE |
CE Input Voltage " H " |
|
1.2 |
|
|
VDD |
V |
|
|
|
|
|
|
|
|
VILCE |
CE Input Voltage " L " |
|
0 |
|
|
0.2 |
V |
|
|
|
|
|
|
|
|
IIHSCK |
SCK Input Current " H " |
VDD=SCK=7.0V |
-1 |
|
|
1 |
mA |
|
|
|
|
|
|
|
|
IILSCK |
SCK Input Current " L " |
VDD=7.0V, SCK=GND |
-1 |
|
|
1 |
mA |
|
|
|
|
|
|
|
|
Rpu |
CE Pull-up Resistance |
|
2 |
4 |
|
10 |
MW |
|
|
|
|
|
|
|
|
ICD |
CD Pin Output Current |
VDD=1.3V, VDS=0.5V |
1 |
2 |
|
|
mA |
|
|
|
|
|
|
|
|
ICTW |
CTW Pin Output Current |
VDD=1.3V, VDS=0.5V |
1 |
2 |
|
|
mA |
|
|
|
|
|
|
|
|
IRESET |
RESET Pin Output Current |
VDD=1.3V, VDS=0.5V |
1 |
2 |
|
|
mA |
|
|
|
|
|
|
|
|
Ileak |
RESET Pin Leakage Current |
VDD=10.0V, CE=GND, |
-1 |
|
|
1 |
mA |
|
|
VDS=12.0V |
|
|
|
|
|
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 - |
Loading...