1

®

FN6279.1

ISL97536

Monolithic 1A Step-Down Regulator with

Low Quiescent Current

The ISL97536 is a synchronous, integrated FET 1A

step-down regulator with internal compensation. It operates

with an input voltage range from 2.5V to 6V, which

accommodates supplies of 3.3V, 5V, or a Li-ion battery

with a resistive divider.

The ISL97536 features PWM control with a 1.4MHz typical

switching frequency. The typical no load quiescent current is

only 500µA. Additional features include a 100ms Power-On-

Reset output, <1µA shutdown current, short-circuit

protection, and over-temperature protection.

The ISL97536 is available in the 10 Ld MSOP package,

area with components on one side only. The 10 Ld MSOP

package is specified for operation over the full -40°C to

+85°C temperature range.

Features

• Components on one side of PCB

• Max height 1.1mm MSOP10

• 100ms Power-On-Reset output (POR)

• Internally-compensated voltage mode controller

• Up to 95% efficiency

• <1µA shutdown current

• 500µA quiescent current

• Hiccup mode overcurrent and over-temperature protection

• Pb-free (RoHS compliant)

Applications

• PDA and pocket PC computers

• Bar code readers

• Cellular phones

• Portable test equipment

• Li-ion battery powered devices

• Small form factor (SFP) modules

Pinout and Typical Application Diagram

ISL97536

(10 LD MSOP)

TOP VIEW

Ordering Information

PART

NUMBER

(Note)

PART

MARKING

PACKAGE

(Pb-Free)

PKG. DWG.

#

ISL97536IUZ

7536Z

10 Ld MSOP

MDP0043

ISL97536IUZ-TK*

7536Z

10 Ld MSOP

Tape and Reel

MDP0043

ISL97536IUZ-T*

7536Z

10 Ld MSOP

Tape and Reel

MDP0043

*Please refer to TB347 for details on reel specifications.

NOTE: 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.

1

2

3

4

10

9

8

7

5

6

SGND

FB

VDD

RSI

VIN

EN

LX

POR

PGND

VO

1.8µH

POR

124k

Ω

100k

Ω

EN

RSI

100k

Ω

100k

Ω

10µF

10µF

100k

Ω

0.1µF

100

Ω

470pF

Data Sheet

November 2, 2007

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

1-888-INTERSIL or 1-888-468-3774

Copyright Intersil Americas Inc. 2006, 2007. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.