rt9711aps Richtek Technology Corporation, rt9711aps Datasheet

rt9711aps

Manufacturer Part Number

rt9711aps

Description

User Programmable Micro-power Voltage Detectors

Manufacturer

Richtek Technology Corporation

Datasheet

1.RT9711APS.pdf (9 pages)

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User Programmable Micro-Power Voltage Detectors

General Description

The RT9801A/B 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

easily achieved through 3 pins connected to GND, V

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 RT9801A/B performs supervisory function by sending

out a reset signal whenever the V

preset threshold level. This reset signal will last the whole

period before V

Active Time-out period.

RT9801A/B is N-Channel, open-drain output and provided

in SOT-23-6 package.

Ordering Information

Note :

RichTek Pb-free and Green products are :

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.

DS9801AB-11 March 2007

RT9801

RoHS compliant and compatible with the current require-

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

100%matte tin (Sn) plating.

ments of IPC/JEDEC J-STD-020.

is recovered and last for the whole period of Reset

recovering. Reset signal will release after

Package Type

E : SOT-23-6

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

Reset Threshold

A : 2.5V to 5V

B : 1.5V to 4V

cial Standard)

voltage falls below a

Features

Applications

Pin Configurations

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.

Typical Application Circuit

User Programmable Threshold 1.5V to 5V in 0.1V

Step with

Low Supply Current 3μ μ μ μ μ A

Quick Reset within 20μ μ μ μ μ s

Built-in Recovery Delay 200ms

Low Functional Supply Voltage 0.9V

Small SOT-23-6 Package

RoHS Compliant and 100% Lead (Pb)-Free

Computers

Controllers

Intelligent Instruments

Critical μP and μC Power Monitoring

Portable/Battery-Powered Equipment

VDD

± ± ± ± ±

3% Accuracy

μP

RESET

GND

VSET1 VSET2 VDD

VSET0 GND RESET

RT9801 V

(TOP VIEW)

SOT-23-6

Pull Up

RT9801A/B

= 2.5V in this example

VSET0

GND

RESET

RT9801

VSET1

VSET2

www.richtek.com

VDD

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rt9711aps Summary of contents

Page 1

User Programmable Micro-Power Voltage Detectors General Description The RT9801A 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, ...

Page 2

RT9801A/B Test Circuits VDD V RT9801A GND Detection Voltage VDD RESET P.G RT9801A/B GND Dynamic Response Functional Pin Description Pin Name Pin Function VSET0 Threshold Voltage Selection Pin GND Ground Pin RESET Reset Pulse Output, Negative Pulse VDD ...

Page 3

Absolute Maximum Ratings Terminal Voltage (with Respect to GND) V ------------------------------------------------------------------------------------------------------------------------ DD All Other Inputs -------------------------------------------------------------------------------------------------------- Input Current, V ----------------------------------------------------------------------------------------------------- 20mA DD Continuous Power Dissipation, P SOT-23-6 ---------------------------------------------------------------------------------------------------------------- Operating Junction Temperature Range -------------------------------------------------------------------------- Storage Temperature Range ---------------------------------------------------------------------------------------- Package Thermal Resistance ...

Page 4

RT9801A/B Table 1: Pin Conditions for Programmable Threshold Voltage Setting RT9801A 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 Note : 1. ...

Page 5

Typical Operating Characteristics N-Ch Driver Sink Current vs 0 RESET N-Ch Driver Sink Current vs 1. ...

Page 6

RT9801A/B Supply Current vs. Input Voltage 80° Input Voltage V Supply Current vs. Input Voltage 80° -30° ...

Page 7

N-Ch Driver Sink Current vs. Input Voltage 2. 0.5V RESET -30° 0.5 1 Input Voltage V N-Ch Driver Sink Current vs. Input Voltage ...

Page 8

RT9801A/B V Drop to Reset Delay vs. Temperature 200mV DROP 2.0 1.0 0.0 -40 -15 10 Temperature Drop to Reset Delay vs. Temperature DD 1 1.2 V ...

Page 9

... SOT-23-6 Surface Mount Package Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com RT9801A Dimensions In Inches Min Max 0 ...

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