XC6121F537ER datasheet, PDF - EEWORLD Datasheet

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XC6121F537ER: DescriptionVoltage Detector with Watchdog Function and ON/OFF Control (VDF=1.6V~5.0V); File Size430KB，23 Pages; ManufacturerTOREX; Websitehttp://www.torex.co.jp/chinese/

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XC6121F537ER Overview

Voltage Detector with Watchdog Function and ON/OFF Control (VDF=1.6V~5.0V)

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XC6121/XC6122

XC6123/XC6124

Series

■GENERAL

DESCRIPTION

ETR0209-009

Voltage Detector with Watchdog Function and ON/OFF Control (V

=1.6V~5.0V)

The XC6121/XC6122/XC6123/XC6124 series are groups of high-precision, low current consumption voltage detectors with

watchdog functions incorporating CMOS process technology. The series consist of a reference voltage source, delay circuit,

comparator, and output driver. With the built-in delay circuit, the XC6121/XC6122/XC6123/XC6124 series’ ICs do not require

any external components to output signals with release delay time. The output type is V

DFL

low when detected. With the

XC6121/XC6122/XC6123/XC6124 series’ ICs, the EN/ENB pin can control ON and OFF of the watchdog functions. By setting

the EN/ENB pin to low or high level, the watchdog function can be OFF while the voltage detector remains operation. Since

the EN/ENB pin of the XC6122 and XC6124 series is internally pulled up to the V

pin or pulled down to the V

pin, the ICs

can be used with the EN/ENB pin left open, when the watchdog functions is used. The detect voltages are internally fixed

1.6V ~ 5.0V in increments of 100mV, using laser trimming technology. Six watchdog timeout period settings are available in a

range from 50ms to 1.6s. Five release delay time settings are available in a range from 3.13ms to 400ms.

■APPLICATIONS

●Microprocessor

watchdog monitoring

and reset circuits

●Memory

battery backup circuits

●System

power-on reset circuits

●Power

failure detection

■FEATURES

Detect Voltage Range

Hysteresis Width

Operating Voltage Range

Detect Voltage Temperature

Characteristics

: +100ppm/

C (TYP.)

Output Configuration

: N-channel open drain

Watchdog Pin

: Watchdog input

If watchdog input maintains ‘H’

or ‘L’ within the watchdog

timeout period, a reset signal is

output from the RESETB pin.

EN/ENB Pin

: When the EN/ENB pin voltage is

set to low or high level, the

watchdog function is forced off.

Release Delay Time

: 400ms, 200ms, 100ms, 50ms,

3.13ms (TYP.)

Watchdog Timeout Period

: 1.6s, 800ms, 400ms, 200ms,

100ms, 50ms (TYP.)

Package

: SOT-25, USP-6C

: 1.6V ~ 5.0V, +2%

(100mV increments)

: V

DFL

x 5% (TYP.)

: 1.0V ~ 6.0V

■TYPICAL

APPLICATION CIRCUIT

■TYPICAL

PERFORMANCE

CHARACTERISTICS

●Supply

Current vs. Input Voltage

ＸＣ６１２１½ＸＣ６１２４(V

=２.７Ｖ）

14.0

Ta=85℃

(μA)

Supply Current:　I

12.0

10.0

8.0

6.0

4.0

2.0

Input Voltage:　V

(V)

Ta=25℃

Ta=-40℃

1/23

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