Datasheet > RT9819G-49GQW

RT9819G-49GQW

更新时间： 2024-11-09 00:26:15

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
13页	239K
描述
Micro-Power Voltage Detectors

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中文翻译

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RT9819G-49GQW 数据手册

RT9819

Micro-Power Voltage Detectors

General Description

Features

^zInternally Fixed Threshold 1.2V to 5V in 0.1V Step

The RT9819 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 RT9819 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_DD

recovered upcrossing the threshold level, the reset signal

will be released after a certain delay time. The RT9819 is

provided in SC-70-3, SC-82, SOT-23-3 and WDFN-6L

1.6x1.6 packages.

^zHigh Accuracy 1.5%

^zLow Supply Current 3μA

^zNo External Components Required

^zQuick Reset within 20μs

^zBuilt-in Recovery Delay Include 0ms, 55ms, 220ms,

450ms Options

^zLow Functional Supply Voltage 0.9V

^zCMOS Push-Pull Output

^zSmall SC-70-3, SC-82, SOT-23-3 and WDFN-6L

1.6x1.6 Packages

^zRoHS Compliant and Halogen Free

Applications

z Computers

Ordering Information

RT9819

z Controllers

Package Type

U3 : SC-70-3

V : SOT-23-3

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

Y : SC-82

z Intelligent Instruments

z Critical μP and μC Power Monitoring

z Portable/Battery-Powered Equipment

YR : SC-82 (R-Type)

QW : WDFN-6L 1.6x1.6 (W-Type)

Typical Application Circuit

Lead Plating System

P : Pb Free

G : Green (Halogen Free and Pb Free)

RT9819

VDD

GND

VDD

Threshold Voltage

12 : 1.2V

13 : 1.3V

RESET/

RESET

RESET/

RESET

49 : 4.9V

50 : 5.0V

Reset Active Timeout Period

A = 0ms (RESET)

B = 55ms (RESET)

C = 220ms (RESET)

D = 450ms (RESET)

E = 0ms (RESET)

F = 55ms (RESET)

G = 220ms (RESET)

H = 450ms (RESET)

Marking Information

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

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.

is a registered trademark of Richtek Technology Corporation.

DS9819-08 July 2013

www.richtek.com

12 3 4 5 6 7...13

中文翻译

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