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The ASM8500 is a voltage supervisory device with a low-power,5V/3.3V P Reset, active LOW, open-drain output. Typical supply current over temperature is a low 6A.
The ASM8500 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. Reset threshold tolerance level is ±1.7% at room temperature. 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 1.5ms to allow the power supply and system microprocessor to stabilize.
The ASM8500 is designed with a open-drain output stage and operates over the extended industrial temperature range.Devices are available in compact surface mount SOT-89 and 3-lead TO-92 packages.
Other low power products in this family include the ASM1810/11/12/15/16/17 and ASM1233D/M.
ASM8500 Maximum Ratings
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
NOTE: These are stress ratings only and functional use is not implied. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability.
ASM8500 Features
• Low Supply Current - 6 A typical (5.5 V) • Automatically restarts a microprocessor after power failure • 1.5ms 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 • Compact surface mount SOT-89 and TO-92 packages • Operating temperature -40°C to +85°C
ASM8500 Typical Application
• Set-top boxes • Cellular phones • PDAs • Energy management systems • Embedded control systems • Printers • Single board computers