1

®

FN8227.2

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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ISL88031

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.

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.

Pinout

ISL88031

(8 LD MSOP)

TOP VIEW

Features

• Quintuple Voltage Monitoring

• Fixed-Voltage Options Allow Precise Monitoring of +5.0V,

+3.3V, +3.0V, +2.5V and +1.8V Power Supplies

• Adjustable Voltage Inputs Monitor Voltages > 0.6V

• 120ms Nominal Reset Pulse Width

• Manual Reset Capability

• Accurate ±1.8% Voltage Threshold

• Immune to Power-Supply Transients

• Low 19µA Maximum Supply Current at 5V

• Pb-Free (RoHS Compliant)

Applications

• Telecom and Datacom Systems

• Routers and Servers

• Access Concentrators

• Cable/Satellite Applications

• Desktop and Notebook Computer Systems

• Data Storage Equipment

• Set-Top Boxes

• Industrial Equipment

• Multi-Voltage Systems

1

2

3

4

8

7

6

5

V2MON

GND

RST

V5MON

V4MON

V3MON

MR

Ordering Information

PART NUMBER

(Notes 1, 2)

PART MARKING

TEMP RANGE (°C)

PACKAGE

(Pb-free)

PKG. DWG. #

ISL88031IU8HFZ

AMA

4.634V

3.078V

-40 to +85

8 Ld MSOP

M8.118

ISL88031IU8HEZ

ANZ

4.634V

2.955V

-40 to +85

8 Ld MSOP

M8.118

ISL88031IU8HCZ

APR

4.634V

2.333V

-40 to +85

8 Ld MSOP

M8.118

ISL88031IU8HAZ

APS

4.634V

1.683V

-40 to +85

8 Ld MSOP

M8.118

ISL88031IU8ECZ

APT

2.866V

2.333V

-40 to +85

8 Ld MSOP

M8.118

ISL88031IU8EAZ

APZ

2.866V

1.683V

-40 to +85

8 Ld MSOP

M8.118

NOTES:

1. Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte

tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil

Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-

020.

Data Sheet

June 9, 2009