ASM1810

Features:

• Low Supply Current
   •20 µA maximum (5.5 V)
• Automatically restarts a microprocessor after power failure
• 150ms reset delay after VCC returns to an in-tolerance condition
• Active LOW power-up reset
• Precision temperature-compensated voltage reference and comparator
• Eliminates external components
• Low cost TO-92 and compact surface mount SOT-23 package
• Push-Pull output for minimum current drain
• Operating temperature -40°C to +85°C


Application

• Set-top boxes
• Cellular phones
• PDAs
• Energy management systems
• Embedded control systems
• Printers
• Single board computers


Pinout

Specifications

Parameter	Min	Max	Unit
Voltage on VCC	-0.5	7	V
Voltage on RESET	-0.5	VCC + 0.5	V
Operating Temperature Range	-40	85	°C
Soldering Temperature (for 10 sec)		260	°C
Storage Temperature	-55	125	°C
ESD rating HBM MM		2 200	KV V

Description

The ASM1810 is a voltage supervisor with low-power, 5V µP active LOW Reset, Push-Pull output. Maximum supply current over temperature is a low 20µA.
The ASM1810 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%, 10% and 15%. When an out-oftolerance 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 of ASM1810 remains active for 150ms to allow the power supply and system microprocessor to stabilize.
The ASM1810 is designed with a push-pull output stage and operates over the extended industrial temperature range. Devices are available in low cost TO-92 and compact surface mount SOT-23 packages.
Other low power products in this family include the ASM1811/12/15/16/17, ASM1233D and ASM1233M.