ASM1233A - Alliance Semiconductor

ASM1233A Open-Drain Output

The ASM1233A is a voltage supervisor with low-power, 3.3V µP Reset, with an active LOW, open-drain output. Maximum supply current over temperature is a low 15µA. The ASM1233A generates an active LOW reset signal whenever the monitored supply is out of tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. The tolerance is 1.

Features

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• Low Supply Current
•15µA maximum (3.6 V) Automatically restarts a microprocessor after power failure 350ms reset delay after VCC returns to an in-tolerance condition Active LOW power-up reset, 5kΩ internal pull-up Precision temperature-compensated voltage reference and comparator Eliminates external components Low-cost SOT-223 package Operating temperature -40°C to +85°C Block Diagram VCC ASM1233A 5.0kΩ Supply Tolerance Bias + RESET Delay 350ms Typical Reference Applications
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• Set-top boxes Cellular phones PDAs Energy management systems Alliance Semiconductor 2575 A.