ASM1233M

www.DataSheet4U.com October 2003 rev 1.0 ASM1233M Low Power, 5V/3.0V, µP Reset, Active LOW, Open-Drain Output Applications Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers General Description The ASM1233M is a voltage supervisor with low-power, 5V µP Reset, with an active LOW, open-drain output. Maximum supply current over temperature is a low 20µA. The ASM1233M 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. Tolerance level options are 5% ,and 10% for a 5V power supply. The tolerance is 15% for the 3.3V, ASM1233M. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 350ms to allow the power supply and system microprocessor to stabilize. Typical Operating Circuit VCC ASM1233M The ASM1233M is designed with a open-drain output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SO-8 packages and 3-lead TO-92 packages. Other low power products in this family include the ASM1810/ 11/12/15/16/17 and ASM1233D. RESET RESET Microprocessor GND Key Features Low Supply Current 20 µA maximum (5.5 V) 15µA maximum (3.6 V) Automatically restar...