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APX812

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Description

The APX812 is a 4-terminal microprocessor supervisor IC with active high reset output and monitors the supply voltage to microprocessors. The APX812 asserts a reset signal to the microprocessor when the manual reset pin (MR) is brought low, whenever the supply voltage falls below its threshold level and at initial power-up. The reset is asserted for at least 240 ms after the MR pin is brought high or the supply voltage rises above the threshold voltage. A number of thresholds are available supporting the supervision of 2.5V, 3.0V, 3.3V and 5V supplies.

Feature(s)

Precision Monitor of 2.5V/3.0V/3.3V/5.0V power supply voltage

Full specified over temperature

Manual reset input

Available in four output configuration

Push-pull Active high reset APX812

Power-on reset generator with fixed delay time 200ms

Application(s)

Computers

Controllers

Intelligent Instruments

Critical ?P and ?C Power Monitoring

Portable/Battery-Powered Equipment

Product Specifications

Product Parameters

Fixed Detect Voltages (V)	2.25, 2.63, 2.93, 3.08, 4, 4.38, 4.63 V
Adjustable Detect Voltage Reference Voltage (V)	N/A V
Number of Channels	1
Minimum Operating Voltage (V)	1 V
Maximum Input Voltage (V)	5.5 V
Quiescent Current (µA)	20 µA
Typical Time Delay (µs)	20 µs
Reset Period (ms)	200 ms
RESET Output (Active High)	Yes (Active High)
RESET Output (Active Low)	No (Active Low)
Manual RESET	Yes
Watchdog	No
Watchdog Time (s)	None s
Power Fail Comparator Threshold (V)	None V
Reset Output Topology	Push-Pull
Ambient Temperature Range (°C)	-40 to 85 °C

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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