MITSMI PST9235, PST9236, PST9237, PST9238, PST9239 Datasheet

MITSUMI

123

54

SOT-25

MITSUMI

System Reset PST92XX

System Reset

Monolithic IC PST92XX Series

Outline

This reset IC in an ultra-compact package provides highly accurate detection and includes a delay circuit.

Features

1. Delay circuit delay time can be set through an external capacitor.

2. High detection accuracy Vs±1.5%.

3. Low consumption current 3µA typ.

Package

SOT-25

Applications

Microcomputer reset and detection of remaining battery charge.

Pin Assignment

1 TC

2 SUB

3 GND

4 V

5 VCC

Equivalent Circuit Diagram

OUT

MITSUMI

MITSUMI

Pin Description

Pin No. Pin name Functions

1 TC T
2 SUB Substrate pin
3 GND GND pin
4 V
5 V

OUT Reset signal output pin

CC VCC pin/voltage detect pin

Note 1 : Connect to GND.

Absolute Maximum Ratings

Item Symbol Ratings Unit

Storage temperature T

Operating temperature T

Supply voltage V

Allowable loss Pd 150 mW

Recommended Operating Conditions

PLH control pin

*

STG

OPR

CC max.

1

-

40~+125 °C

-

20~+175 °C

-

0.3~+110 V

System Reset PST92XX

Item Symbol Ratings Unit

Operating temperature T

Supply voltage V

Electrical Characteristics

Item Symbol

Detecting voltage V

S 1RL=4.7kΩ PST9233 3.250 3.300 3.350 V

OPR

CC

-

20~+75 °C

-

0.3~+10 V

(Except where noted otherwise, Ta=25°C)

Measurement

circuit

Measurement conditions Min. Typ. Max. Unit

PST9246 4.531 4.600 4.669
PST9245 4.432 4.500 4.568
PST9244 4.334 4.400 4.466
PST9243 4.235 4.300 4.365
PST9242 4.137 4.200 4.263
PST9241 4.038 4.100 4.162
PST9240 3.940 4.000 4.060
PST9239 3.841 3.900 3.959
PST9238 3.743 3.800 3.857
PST9237 3.644 3.700 3.756
PST9236 3.546 3.600 3.654
PST9235 3.447 3.500 3.553

CC=H L PST9234 3.349 3.400 3.451

V

<

OL

V

0.4V PST9232 3.152 3.200 3.248

=

PST9231 3.053 3.100 3.147
PST9230 2.955 3.000 3.045
PST9229 2.856 2.900 2.944
PST9228 2.758 2.800 2.842
PST9227 2.659 2.700 2.741
PST9226 2.561 2.600 2.639
PST9225 2.462 2.500 2.538
PST9224 2.364 2.400 2.436
PST9223 2.265 2.300 2.335
PST9222 2.167 2.200 2.233
PST9221 2.068 2.100 2.132
PST9220 1.970 2.000 2.030
PST9219 1.871 1.900 1.929