RT9801BCE Richtek Technology Corporation, RT9801BCE Datasheet

RT9801BCE

Manufacturer Part Number

RT9801BCE

Description

Manufacturer

Richtek Technology Corporation

Datasheets

1.RT9801ACE.pdf (6 pages)

2.RT9801BCE.pdf (6 pages)

Specifications of RT9801BCE

Date_code

05+

Packing_info

SOT-163

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Quantity

Price

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Bonase Electronics (HK) Co., Limited

Part Number:

RT9801BCE

Manufacturer:

RICHTEK

Quantity:

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BOSTOCK HK LIMITED

Part Number:

RT9801BCE

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General Description

The RT9801 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 3µA.

Selection of V

connected to GND, VDD or floating for different

threshold voltage settings. Two versions of threshold

voltages, 1.5V ~ 4V and 2.5V ~ 5V, which are

programmed in factory are offered by customer

demands.

The RT9801 performs supervisory function by

sending out a reset signal whenever the VDD voltage

falls below a preset threshold level. This reset signal

will last the whole period before VDD recovering.

Reset signal will release after VDD is recovered and

lasts for the whole period of Reset Active Time-out

period.

RT9801

provided in SOT-26 package.

Ordering Information

RT9801

DS9801-00 January 2002

N-channel,

User Programmable Micro-Power Voltage Detectors

Operating temperature range

C: Commercial standard

Reset Threshold

A : 2.5V~5V

B : 1.5V~4V

Package Type

E : SOT-26

is easily achieved through 3 pins

open-drain

output

Preliminary

and

Features

Applications

Pin Configurations

Typical Application Circuit

RT9801 CE

(Plastic SOT-26)

Part Number

User Programmable Threshold 1.5V to 5V in

0.1V Step with ± ± ± ± 3% Accuracy

Low Supply Current 3µ µ µ µ A

Quick Reset within 20µ µ µ µ S

Built-in Recovery Delay 200mS

Low Functional Supply Voltage 0.9V

Small SOT-26 Package

Computers

Controllers

Intelligent Instruments

Critical µP and µC Power Monitoring

Portable/Battery-Powered Equipment

VDD

µP

RESET

RT9801B V

GND

Pin Configurations

Pull Up

= 2.5V in this example

VSET0

GND

RESET

www.richtek-ic.com.tw

RT9801

VSET1

VSET2

TOP VIEW

1. VSET0

2. GND

3. RESET

4. VDD

5. VSET2

6. VSET1

VDD

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