MITSMI PST9125, PST9125N, PST9126, PST9126N, PST9127 Datasheet
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MITSUMI |
System Reset PST91XX |
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System Reset
Monolithic IC PST91XX Series
Outline
The function of this low reset type IC is to accurately reset systems after detecting the supply voltage at the time of switching power on and instantaneous power off in various CPU and other logic systems. Further, this IC, with its super low consumption current and high precision voltage detection capacity, is most suited as a voltage check circuit for a number of products which use batteries.
Features
1. |
High precision voltage detection |
Vs±3% max. |
2. |
Super low current consumption |
ICCH=1.5µA typ. ICCL=1.0µA typ. |
3. |
Low operating threshold voltage |
0.65V typ. |
4. |
Hysteresis voltage is provided as a detect voltage |
50mV typ. |
5. |
Large output current at the time ON |
15mA typ. |
6.The detect voltage can be selected at your discretion at 0.1V step within the range of 1.9 to 4.6V by the following stipulation method.
PST91XX
Detected voltage value (Example : for 4.2V ······ PST9142)
Package
TO-92A (PST91 |
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SOT-25A (PST91 |
N) |
Applications
1.Reset circuits for microcomputers, CPU and MPU.
2.Reset circuit for logic circuitry.
3.Battery voltage check circuit.
4.Circuit for changing over to backup battery.
5.Level detecting circuit.
Pin Assignment
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1 |
NC |
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5 |
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4 |
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1 |
VOUT |
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2 |
SUB |
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2 |
VCC |
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1 |
2 |
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3 |
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3 |
GND |
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3 |
GND |
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4 |
VOUT |
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1 2 3 |
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5 |
VCC |
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SOT-25A |
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TO-92A
(Note) The pin 2 of SOT-25 package is a SUB terminal. Connect it to GND.
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