MITSMI PST600EM, PST600F, PST600FM, PST600G, PST600GM Datasheet
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MITSUMI |
System Reset PST600 |
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System Reset
Monolithic IC PST600
Outline
This IC operates in a variety of CPU systems and other logic systems by detecting power supply voltage, so that the system can be reset accurately when power is turned on or when power is momentarily cut. PST572 and others perform the same function as does this series, but this IC is a low reset type system resetting IC which follows load current so that circuit current flow increases for ON, and has low current consumption for both ON and OFF.
Features
1. |
Follows load current so that circuit current flow increases for ON, and has low current consumption for |
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both ON and OFF. |
No load : ICCL=7µA typ.; ICCH=5µA typ. |
2. |
Low operating limit voltage |
0.65V typ. |
3. |
Hysteresis voltage provided in detection voltage |
50mV typ. |
4. |
The following 10 ranks of detection voltages are available. |
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PST600 C : 4.5V typ. |
H : 3.1V typ. |
D : 4.2V typ. |
I : 2.9V typ. |
E : 3.9V typ. |
J : 2.7V typ. |
F : 3.6V typ. |
K : 2.5V typ. |
G : 3.3V typ. |
L : 2.3V typ. |
Package
MMP-3A (PST600
M) TO-92A (PST600
)
*
contains detection voltage rank.
Applications
1.Microcomputers, CPU, MPU reset circuits
2.Logic circuit reset circuits
3.Battery voltage check circuits
4.Back-up power supply switching circuits
5.Level detection circuits
Equivalent Circuit
MITSUMI |
System Reset PST600 |
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Pin Assignment
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1 |
VCC |
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1 |
3 |
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1 |
VCC |
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2 |
GND |
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2 |
GND |
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3 |
VOUT |
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2 |
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3 |
VOUT |
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3 |
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MMP-3A |
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TO-92A |
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Absolute Maximum Ratings (Ta=25°C)
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Symbol |
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Ratings |
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Units |
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Storage temperature |
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TSTG |
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-40~+125 |
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°C |
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Operating temperature |
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TOPR |
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-20~+75 |
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°C |
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Power supply voltage |
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VCC max. |
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-0.3~10 |
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V |
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Allowable loss |
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Pd |
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200 (MMP-3A) |
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300 (TO-92A) |
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Electrical Characteristics |
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(Ta=25°C) (unless otherwise indicated resistance unit is Ω ) |
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Item |
Symbol |
Measurement |
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Measurement conditions |
Min. |
Typ. |
Max. |
Units |
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circuit |
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PST600C |
4.3 |
4.5 |
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4.7 |
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PST600D |
4.0 |
4.2 |
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4.4 |
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PST600E |
3.7 |
3.9 |
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4.1 |
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RL=470 |
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PST600F |
3.4 |
3.6 |
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3.8 |
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PST600G |
3.1 |
3.3 |
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3.5 |
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Detection voltage |
Vs |
1 |
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V |
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VOL = 0.4V |
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PST600H |
2.9 |
3.1 |
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3.3 |
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VCC=H |
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L |
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PST600I |
2.75 |
2.90 |
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3.05 |
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PST600J |
2.55 |
2.70 |
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2.85 |
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PST600K |
2.35 |
2.50 |
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2.65 |
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PST600L |
2.15 |
2.30 |
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2.45 |
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Hysteresis voltage |
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Vs |
1 |
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RL=470, VCC=L |
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H |
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L |
30 |
50 |
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100 |
mV |
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Detection voltage |
Vs/ |
T |
1 |
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RL=470, Ta=-20°C~+75°C |
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±0.01 |
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%/°C |
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temperature coefficient |
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Low level output voltage |
VOL |
1 |
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VCC=Vs min. -0.05V, RL=470 |
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0.3 |
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0.4 |
V |
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Output leak current |
IOH |
1 |
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VCC=10V |
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±0.1 |
µA |
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Circuit current for ON |
ICCL |
1 |
VCC=Vs min. |
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IOL=0mA |
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7 |
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14 |
µA |
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-0.05V |
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IOL=8mA |
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50 |
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130 |
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Circuit current for OFF |
ICCH |
1 |
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VCC=Vs typ./0.85V, RL=∞ |
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5 |
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10 |
µA |
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H transmission delay time |
tPLH |
2 |
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RL=4.7k, CL=100pF *1 |
20 |
40 |
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80 |
µS |
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L transmission delay time |
tPHL |
2 |
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RL=4.7k, CL=100pF |
*1 |
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10 |
20 |
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40 |
µS |
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Operating limit voltage |
VopL |
1 |
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0.65 |
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0.85 |
V |
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RL=4.7k, VOL = 0.4V |
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Output current 1 for ON |
IOL 1 |
1 |
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VCC=Vs min. -0.05V, RL=0 |
8 |
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mA |
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Output current 2 for ON |
IOL 2 |
1 |
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Ta=-20°C~+75°C, RL=0 *2 |
6 |
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mA |
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*1 tPLH : VCC= (Vs typ. -0.4V) 
(Vs typ.+0.4V), tPLH : VCC= (Vs typ.+0.4V) 
(Vs typ.-0.4V)
*2 VCC=Vs min. -0.15V
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