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XC6123E639EL Datasheet(PDF) 1 Page - Torex Semiconductor

Part # XC6123E639EL
Description  Voltage Detector with Watchdog Function and ON/OFF Control (VDF=1.6V~5.0V)
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Manufacturer  TOREX [Torex Semiconductor]
Direct Link  http://www.torex.co.jp
Logo TOREX - Torex Semiconductor

XC6123E639EL Datasheet(HTML) 1 Page - Torex Semiconductor

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XC6121/XC6122
XC6123/XC6124 Series
Voltage Detector with Watchdog Function and ON/OFF Control (VDF=1.6V~5.0V)
0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
01
23
4
5
6
Input Voltage: VIN (V)
XC6121~XC6124(VDF=2.7V)
Ta=85℃
Ta=-40℃
Ta=25℃
■GENERAL DESCRIPTION
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 VDFL 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 VIN pin or pulled down to the VSS 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.
■FEATURES
Detect Voltage Range
: 1.6V ~ 5.0V, +2%
(100mV increments)
Hysteresis Width
: VDFL x 5% (TYP.)
Operating Voltage Range
: 1.0V ~ 6.0V
Detect Voltage Temperature
Characteristics
: +100ppm/OC (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
■APPLICATIONS
●Microprocessor watchdog monitoring
and reset circuits
●Memory battery backup circuits
●System power-on reset circuits
●Power failure detection
■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE
CHARACTERISTICS
●Supply Current vs. Input Voltage
ETR0209-009


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