Diodes AZ70XX User Manual download pdf

Oct. 2011 Rev. 2. 2 BCD Semiconductor Manufacturing Limited

VOLTAGE DETECTOR AZ70XX

Data Sheet

General Description

The AZ70XX series ICs are under voltage detectors

with a built in voltage threshold and low power con-

sumption. The AZ70XX are specifically designed to

accurately monitor power supplies.

The AZ70XX use a precision on-chip voltage refer-

ence and a comparator to measure the input operating

voltage. These ICs can accurately reset the system after

detecting voltage at the time of switching power on and

instantaneous power off in various CPU systems and

other logic systems. The detect voltage thresholds are

2.3V/2.5V/2.7V/2.9V/3.1V/3.3V/4.2V/4.5Vfor

AZ7023/25/27/29/31/33/42/45 respectively. Built in

hysteresis helps to prevent erratic operation in the pres-

ence of noise.

The AZ70XX series are available in 2 standard pack-

ages: TO-92 (bulk or ammo packing) and SOT-89.

Features

· Low Current Consumption:

CCL

=300µA Typical

CCH

=30µA Typical

· Low Minimum Operating Voltage for Output

Resetting: 0.8V Typical

· Built in Hysteresis Voltage: 50mV Typical

· Open Collector Output

· Extended Temperature Range: -40 to 85

Applications

· Low Battery Voltage Detector

· Power Fail Indicator

· Processor Reset Generator

· Battery Backup Control

· Home Electric Appliances

SOT-89

Figure 1. Package Types of AZ70XX

TO-92(Bulk Packing) TO-92(Ammo Packing)

1 2 3 4 5 6 ... 12 13

Summary of Contents

Page 1 - Applications

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Page 2 - Pin Configuration

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Page 3 - Ordering Information

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Page 4

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Page 5 - Electrical Characteristics

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Page 6 - Figure 6. Test Circuit 3

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Page 7 - Oct. 2011 Rev. 2. 2

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Page 8 - Operating Diagram

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Page 9 - Typical Applications

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Page 10 - Mechanical Dimensions

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Page 11

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Page 12 - SOT-89 Unit: mm(inch)

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Page 13

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