XC6121_1A TOREX [Torex Semiconductor], XC6121_1A Datasheet

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XC6121_1A

Manufacturer Part Number
XC6121_1A
Description
Voltage Detector with Watchdog Function and ON/OFF Control (VDF=1.6V~5.0V)
Manufacturer
TOREX [Torex Semiconductor]
Datasheet
XC6121/XC6122
XC6123/XC6124
Voltage Detector with Watchdog Function and ON/OFF Control (V
■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 V
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
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 0.1V, 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
●Memory battery backup circuits
●System power-on reset circuits
●Power failure detection
■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE
and reset circuits
Series
■FEATURES
Detect Voltage Range
Hysteresis Width
Operating Voltage Range
Detect Voltage Temperature
Characteristics
Output Configuration
Watchdog Pin
EN/ENB Pin
Release Delay Time
Watchdog Timeout Period : 1.6s, 800ms, 400ms, 200ms,
Package
Environmentally Friendly
●Supply Current vs. Input Voltage
CHARACTERISTICS
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0
0
IN
XC6121~XC6124(V
Ta=25℃
pin or pulled down to the V
1
Input Voltage: V
Ta=85℃
DFL
2
: 1.6V ~ 5.0V, +2%
: V
: 1.0V ~ 6.0V
: +100ppm/
: N-channel open drain
: Watchdog input
: When the EN/ENB pin voltage is
: EU RoHS Compliant, Pb Free
: 400ms, 200ms, 100ms, 50ms,
: SOT-25, USP-6C
DF
(0.1V increments)
If watchdog input maintains ‘H’
or
timeout period, a reset signal is
output from the RESETB pin.
low when detected. With the
set to low or high level, the
watchdog function is forced off.
3.13ms (TYP.)
100ms, 50ms (TYP.)
DFL
=1.6V~5.0V)
‘L’
3
x 5% (TYP.)
within
Ta=-40℃
O
C (TYP.)
IN
DF
4
(V)
=2.7V)
SS
ETR0209-010a
the
pin, the ICs
5
watchdog
6
1/23

Related parts for XC6121_1A

XC6121_1A Summary of contents

Page 1

XC6121/XC6122 XC6123/XC6124 Voltage Detector with Watchdog Function and ON/OFF Control (V ■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, ...

Page 2

XC6121/XC6122/XC6123/XC6124 ■PIN CONFIGURATION SOT-25 (TOP VIEW) ■PIN ASSIGNMENT PIN NUMBER SOT-25 USP- 2/23 Series (BOTTOM VIEW) * The dissipation pad for the USP-6C package should be solder-plated in ...

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CLASSIFICATION ●Selection Guide RESET OUTPUT SERIES V (RESETB) DFL XC6121 N-channel open drain XC6122 N-channel open drain XC6123 N-channel open drain XC6124 N-channel open drain * EN input logic: The watchdog function turns on when the EN pin becomes ...

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XC6121/XC6122/XC6123/XC6124 ■BLOCK DIAGRAMS ●XC6121 Series ●XC6122 Series 4/23 Series N-ch Open Drain Output N-ch Open Drain Output ...

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DIAGRAMS (Continued) ●XC6123 Series ●XC6124 Series XC6121/XC6122/XC6123/XC6124 N-ch Open Drain Output N-ch Open Drain Output Series 5/23 ...

Page 6

XC6121/XC6122/XC6123/XC6124 ■ABSOLUTE MAXIMUM RATINGS PARAMETER Input Voltage Output Current Output Voltage SOT-25 Power Dissipation USP-6C Operational Temperature Range Storage Temperature Range 6/23 Series SYMBOL RATINGS V V -0 -0.3~V +0.3≦7.0 EN/ENB ...

Page 7

CHARACTERISTICS PARAMETER SYMBOL Detect Voltage V DFL Hysteresis Width V HYS (*1) Supply Current I SS Operating Voltage V IN Output Current I RBOUT Temperature △V / DFL Characteristics Topr ・V △ DFL Release Delay Time ...

Page 8

XC6121/XC6122/XC6123/XC6124 ■ELECTRICAL CHARACTERISTICS (Continued) PARAMETER SYMBOL Watchdog T WDIN Minimum Pulse Width Watchdog V WDH High Level Voltage Watchdog V WDL Low Level Voltage Watchdog R WD Pull-down Resistance EN/ENB V /V ENH ENBH High Level Voltage EN/ENB V V ...

Page 9

EXPLANATION The XC6121/6122/6123/6124 series compare, using the error amplifier, the voltage of the internal voltage reference source with the voltage divided by R1, R2 and R3 connected to the V activates the watchdog logic, delay circuit and the output ...

Page 10

XC6121/XC6122/XC6123/XC6124 ■TIMING CHARTS 1. XC6121/XC6122 Series (EN products) ●N-ch Open Drain Output (Rpull=100kΩ) (N-ch Open Drain Output, Rpull=100kΩ) ●t DF 10/23 Series Hysteresis Width ...

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CHARTS (Continued) 2. XC6123/XC6124 Series (ENB products) ●N-ch Open Drain Output (Rpull=100kΩ) (N-ch Open Drain Output, Rpull=100kΩ) ●t DF XC6121/XC6122/XC6123/XC6124 Hysteresis Width Series 11/23 ...

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XC6121/XC6122/XC6123/XC6124 ■NOTES ON USE 1. Please use this IC within the stated maximum ratings. Operation beyond these limits may cause degrading or permanent damage to the device. 2. When a resistor is connected between the V malfunction may occur as ...

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LOGIC CONDITIONS PIN NAME LOGIC CONDITIONS EN/ENB>1.30V EN/ENB L EN/ENB<0.35V NOTE Detect Voltage DFL V : Hysteresis Range HYS High Level Voltage WDH Low Level ...

Page 14

XC6121/XC6122/XC6123/XC6124 ■TEST CIRCUITS Circuit ① Circuit ② Circuit ③ 14/23 Series VDS=0.5V ...

Page 15

CIRCUITS (Continued) Circuit ④ Circuit ⑤ Circuit ⑥ XC6121/XC6122/XC6123/XC6124 Series 15/23 ...

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XC6121/XC6122/XC6123/XC6124 ■TEST CIRCUITS (Continued) Circuit ⑦ Circuit ⑧ Circuit ⑨ 16/23 Series Note: The above reference is about the EN logic operation. Note: XC6122 series has EN pin, XC6124 Series has ENB pin. ...

Page 17

PERFORMANCE CHARACTERISTICS (1.)Supply Current vs. Input Voltage XC6121~XC6124(V 14.0 Ta=85℃ 12.0 10.0 8.0 6.0 4.0 2 Input Voltage: V XC6121~XC6124(V 14.0 12.0 10.0 Ta=25℃ 8.0 6.0 4.0 2 Input Voltage: V ...

Page 18

XC6121/XC6122/XC6123/XC6124 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (2.)Detect, Release Voltage vs. Ambient Temperature (Continued) XC6121~XC6124(V 5. 5.20 5.10 5. 4.90 -50 - Ambient Temperature: Ta (℃) (3.)Nch Driver Output Current vs. V XC6121~XC6124 30 Ta=25℃ 25 ...

Page 19

PERFORMANCE CHARACTERISTICS (Continued) (6.)Watchdog Timeout Period vs. Ambient Temperature XC6121~XC6124 300 T =100ms WD 250 200 150 100 50 0 -50 - Ambient Temperature: Ta (℃) (7.)Release Delay Time vs. Input Voltage XC6121~XC6124 4.0 Ta=25℃ 3.8 ...

Page 20

XC6121/XC6122/XC6123/XC6124 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (11.)Watchdog Pull-Down Resistance vs. Ambient Temperature XC6121~XC6124 1100 1000 900 800 700 600 500 400 300 -50 - Ambient Temperature: Ta (℃) (12.)EN Pull-Up Resistance vs. Ambient Temperature XC6121~XC6122 3.0 2.4 1.8 1.2 ...

Page 21

PERFORMANCE CHARACTERISTICS (Continued) (16.)ENB Low Level Voltage vs. Ambient Temperature XC6123~XC6124 1.10 1.00 0.90 0.80 0.70 0.60 0.50 -50 - Ambient Temperature: Ta (℃) (17.)ENB High Level Voltage vs. Ambient Temperature 1.10 1.00 0.90 0.80 V =6.0V ...

Page 22

XC6121/XC6122/XC6123/XC6124 ■ PACKAGING INFORMATION ●SOT-25 ●USP-6C Reference Pattern Layout 22/23 Series ●USP-6C Unit :mm ●USP-6C Reference Metal Mask Design Unit :mm ...

Page 23

The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this datasheet date assume ...

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