ASM1816
Low Power 3.3V/3.0V
μP
Reset,
Active LOW, Open-Drain Output
General Description
The ASM1816 is a voltage supervisory device with low-
power, 3.3V/3V μP Reset, active LOW, open-drain
output. Maximum supply current over temperature is a
low 15μA (at 3.6V).
The ASM1816 generates an active LOW reset signal
whenever the monitored supply is out of tolerance. A
precision reference and comparator circuit monitor power
supply (V
CC
) level. Tolerance level options are 5%, 10%,
15% and 20%. When an out-of-tolerance condition is
detected, an internal power-fail signal is generated which
forces an active LOW reset signal. After V
CC
returns to an
in-tolerance condition, the reset signal remains active for
150ms to allow the power supply and system
microprocessor to stabilize.
The ASM1816 is designed with a open-drain output stage
and operates over the extended industrial temperature
range. Devices are available in TO-92 and compact
surface mount SOT-23 packages.
Other low power products in this family include the
ASM1810/11/12/15/17, ASM1233D and ASM1233M.
Key Features
Low Supply Current
20 μA maximum (5.5 V)
15μA maximum (3.6 V)
Automatically restarts a microprocessor after power
failure
150ms reset delay after V
CC
returns to an in-tolerance
condition
Active LOW power-up reset
Precision temperature-compensated voltage
reference and comparator
Eliminates external components
TO-92 and compact surface mount SOT-23 package
Operating temperature -40°C to +85°C
Applications
Set-top boxes
Cellular phones
PDAs
Energy management systems
Embedded control systems
Printers
Single board computers
Typical Application
©2010 SCILLC. All rights reserved.
JANUARY 2010 – Rev. 2
Publication Order Number:
ASM1816/D
PULSECORE [ PulseCore Semiconductor ]
