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ISL88031
Data Sheet
March 31, 2006
FN8227.0
Quintuple Voltage Monitor
The ISL88031 is a quintuple voltage-monitoring supervisor
combining competitive reset threshold accuracy and low
power consumption. This device combines popular functions
such as Power On Reset, Undervoltage Supply Supervision,
reset signaling and Manual Reset. Monitoring up to five
different voltages in a small 8 Ld MSOP package, the
ISL88031 devices can help to lower system cost, reduce
board space requirements, and increase the reliability of
multi-voltage systems.
Low V
DD
detection circuitry protects the user鈥檚 system from
low voltage conditions, resetting the system when V
DD
or
any of the other monitored power supply voltages fall below
their respective minimum voltage thresholds. The reset
signal remains asserted until all of these voltages return to
proper operating levels and stabilize.
With two of the five voltage monitors being preset for
common supplies, users can adjust the threshold voltages of
the third, fourth, and fifth voltage monitors in order to meet
specific system level requirements.
Features
鈥?Quintuple Voltage Monitoring
鈥?Fixed-Voltage Options Allow Precise Monitoring of +5.0V,
+3.3V, +3.0V, +2.5V and +1.8V Power Supplies
鈥?Adjustable Voltage Inputs Monitor Voltages > 0.6V
鈥?120ms Nominal Reset Pulse Width
鈥?Manual Reset Capability
鈥?Reset Signals Valid Down to V
DD
= 1V
鈥?Accurate 鹵1.8% Voltage Threshold
鈥?Immune to Power-Supply Transients
鈥?Low 19碌A Maximum Supply Current at 5V
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
鈥?Telecom & Datacom Systems
鈥?Routers & Servers
鈥?Access Concentrators
鈥?Cable/Satellite Applications
鈥?Desktop & Notebook Computer Systems
鈥?Data Storage Equipment
鈥?Set-Top Boxes
鈥?Industrial Equipment
鈥?Multi-Voltage Systems
Pinout
ISL88031
(8 LD MSOP)
TOP VIEW
8
7
6
5
MR
V
DD
V2MON
GND
1
2
3
4
RST
V5MON
V4MON
V3MON
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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