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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LP3470

SNVS003G – JUNE 1999 – REVISED APRIL 2016

LP3470 Voltage Supervisor With Programmable Delay and 1% Reset Threshold

1

1 Features

1

•

5-Pin SOT-23 Package

•

Open-Drain Reset Output

•

Programmable Reset Time-Out Period Using an

External Capacitor

•

•

±1% Reset Threshold Accuracy Over

Temperature

•

Low Quiescent Current (16 µA typical)

•

2 Applications

•

Critical µP and µC Power Monitoring

•

Intelligent Instruments

•

Computers

•

Portable and Battery-Powered Equipment

3 Description

The

LP3470

device

is

a

micropower

voltage

supervisory circuit designed to monitor voltages

within 1% of reset threshold over temperature. It

provides maximum adjustability for power-on-reset

(POR) and supervisory functions.

supply voltage falls below a reset threshold. The

reset time-out period is adjustable using an external

capacitor. Reset remains asserted for an interval

risen above the threshold voltage.

For information on available reset threshold voltage

options, see Mechanical, Packaging, and Orderable

Information.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP3470

SOT-23 (5)

1.60 mm × 2.90 mm

(1) For

all

available

packages,

see

the

Package

Option

Addendum at the end of the data sheet.

Basic Operating Circuit