Datasheet > RT9827

RT9827

更新时间： 2024-09-19 11:59:23

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
14页	161K
描述
Micro-Power Voltage Detector

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中文翻译

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数据手册

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RT9827 数据手册

RT9827

Micro-Power Voltage Detector

General Description

Features

z Internally Fixed Threshold 1.2V to 5V in 0.1V Step

The RT9827 is a micro-power voltage detector supervising

the power supply voltage level for microprocessors (μP) or

digital systems. It provides internally fixed threshold levels

with 0.1V per step ranging from 1.2V to 5V, which covers

most digital applications. It features low supply current of

3μA. The RT9827 performs supervisory function by sending

out a reset signal whenever the V_DDvoltage falls below a

preset threshold level. This reset signal will last the whole

period before V_DDrecovering. Once V_DDrecovered

upcrossing the threshold level, the reset signal will be

released after a certain delay time. RT9827 is provided in

SC-82, SC-70-3, SOT-23-3, SOT-23-5 and SOT-89

packages.

z High Accuracy 1.5%

z Low Supply Current 3μA

z No External Components Required

z Quick Reset within 20μs

z Built-in Recovery Delay Include 0ms, 55ms, 220ms,

450ms Options

z Low Functional Supply Voltage 0.9V

z N-Channel Open-Drain Output

z Small SC-82, SC-70-3, SOT-23-3, SOT-23-5, SOT-89

Packages

z RoHS Compliant and 100% Lead (Pb)-Free

Applications

z Computers

Ordering Information

RT9827

z Controllers

Package Type

U3 : SC-70-3

V : SOT-23-3

VL : SOT-23-3 (L-Type)

B : SOT-23-5

z Intelligent Instruments

z Critical μP and μC Power Monitoring

z Portable/Battery-Powered Equipment

X : SOT-89

Y : SC-82

YR : SC-82 (R-Type)

Marking Information

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

Lead Plating System

P : Pb Free

G : Green (Halogen Free and Pb Free)

Threshold Voltage

12 : 1.2V

13 : 1.3V

Typical Application Circuit

49 : 4.9V

50 : 5.0V

RT9827

GND

100k

Pull Up

Reset Active Timeout Period

A = 0ms (RESET)

B = 55ms (RESET)

C = 220ms (RESET)

D = 450ms (RESET)

E = 0ms (RESET)

VDD

µP

VDD

RESET/

RESET

RESET/

RESET

F = 55ms (RESET)

G = 220ms (RESET)

H = 450ms (RESET)

Note :

Richtek 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.

DS9827-01 April 2011

www.richtek.com

12 3 4 5 6 7...14

中文翻译

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