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FM1233E

Fairchild Semiconductor
Part Number FM1233E
Manufacturer Fairchild Semiconductor
Description 3-Pin C Supervisor Circuit
Published Mar 30, 2005
Detailed Description FM1233E 3-Pin µC Supervisor Circuit February 2003 FM1233E 3-Pin µC Supervisor Circuit General Description The FM1233E ...
Datasheet PDF File FM1233E PDF File

FM1233E
FM1233E

Overview
FM1233E 3-Pin µC Supervisor Circuit February 2003 FM1233E 3-Pin µC Supervisor Circuit General Description The FM1233E is a supervisor circuit that monitors a microprocessor power supply or other system voltage and issues a reset pulse when a fault condition exists.
Several different threshold voltages are offered to accommodate 3V systems with different tolerances.
The device features a precision temperature-compensated voltage reference and comparator.
When VCC falls to the threshold voltage, a RESET pulse is issued, holding the output in the active state.
When power rises above VTH, the reset remains for approximately 250 ms to allow the system clock and other circuits to stabilize.
The reset output of FM1233E is of open-drain active low type.
Features s Precision monitoring of 3.
3V and lower voltage microprocessor systems s VTH values of 2.
88V, 2.
72V s Automatic restart of microprocessor after power failure s 140ms (min) power-on RESET delay (typ.
: 256ms) s s s s Internal 5kΩ pull-up resistor Other reset choices available: 32 to 128ms Operating Temperature -40°C to +105°C SOT23-3 package Typical Operating Circuit VCC 3 FM1233E Controller 1 GND 2 RESET Connection Diagram GND 1 FM1233E 3 VCC RESET 2 SOT23-3 Package ©2003 Fairchild Semiconductor Corporation 1 www.
fairchildsemi.
com FM1233E Rev.
D FM1233E 3-Pin µC Supervisor Circuit Absolute Maximum Ratings Voltage on any pin relative to GND VCC RESET Input Current Output Current (RESET) -0.
3V to +6.
0V -0.
3V to (VCC + 0.
3V) 20mA 20mA Continuous Power Dissipation (TA = 70°C) SOT23 (derate 4mW above 70°C) Operating Temperature Range Storage Temperature Range Lead Temperature (soldering, 10s) 300mW -40°C to +105°C -65°C to +150°C +300°C These are stress ratings only, and functional operation is not implied for these levels or beyond.
Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.
Electrical Characteristics (VCC = 3.
3V; TA = -40°C to +105°C unless otherw...


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