RT9802

Preliminary

1

DS9802-07

March 2007

www.richtek.com

Pin Configurations

User Programmable Micro-Power Voltage Detectors

Marking Information

For marking information, contact our sales representative

directly or through a RichTek distributor located in your

area, otherwise visit our website for detail.

Ordering Information

General Description

The RT9802 is a micro-power voltage detector

supervising the power supply voltage level for

microprocessors (

μP) or digital systems. It provides user

programmable threshold levels with 0.1V step ranging

from 1.5V to 5V, which covers most digital applications. It

features low supply current of 3

floating for different threshold voltage settings. Two versions

of threshold voltages, 1.5V to 4V and 2.5V to 5V, which

are programmed in factory are offered by customer

demands.

The RT9802 performs supervisory function by sending out

threshold level. This reset signal will last the whole period

is recovered and lasts for the whole period of Reset Active

Time-out period.

RT9802 is CMOS, active-low output and provided in

SOT-23-6 package.

Features

User Programmable Threshold 1.5V to 5V in 0.1V

Step with ± 3% Accuracy

Low Supply Current 3

μμμμμA

Quick Reset within 20

μμμμμs

Built-in Recovery Delay 200ms

Low Functional Supply Voltage 0.9V

RoHS Compliant and 100% Lead (Pb)-Free

Applications

Computers

Controllers

Intelligent Instruments

Critical

μP and μC Power Monitoring

Portable/Battery-Powered Equipment

(TOP VIEW)

SOT-23-6

VSET0 GND RESET

VSET1 VSET2 VDD

4

23

5

6

1

Note : There is no pin1 indicator on top mark for SOT-23-6

type, and pin 1 will be lower left pin when reading top mark

from

left to right.

Note :

RichTek Pb-free and Green products are :

RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Suitable for use in SnPb or Pb-free soldering processes.

100%matte tin (Sn) plating.

RT9802

Package Type

E : SOT-23-6

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

Reset Threshold

A : 2.5V to 5V

B : 1.5V to 4V

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