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PST9012

IC for System Reset Monolithic IC

Mitsumi 

MITSUMI

IC for System Reset PST90XX

IC for System Reset

Monolithic IC PST90XX Series

November 9, 2001

Outline

The function of this low voltage detection 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. 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±2.5% max.

2. Super low current consumption

ICCH=1.5µA typ. ICCL=1µA typ.

3. Low operating threshold voltage

0.7V max.

4. Hysteresis voltage is provided as a detect voltage Vs 5% typ.

5. The detect voltage can be selected at your discretion at 0.1 V step within the range of 0.8 to 1.8V by the

following stipulation method.

PST90XX

Detected voltage value

(Example : for 0.8V ······ PST9008)

Packages

TO-92A (PST90 )

SOT-25A (PST90 N)

Applications

1. Reset circuits for microcomputers, CPUs and MPUs

2. Reset circuits for logic circuits

3. Battery voltage check circuits

4. Back-up power supply switching circuits

5. Level detection circuits

Pin Assignment

1

VOUT

2

VCC

3

GND

5

4

123

123

TO-92A

SOT-25A

(TOP VIEW)

Note : The pin 2 of SOT-25 package is a SUB terminal. Connect it to GND.

1

NC

2

SUB

3

GND

4

VOUT

5

VCC

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