1

®

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. 2005, 2007. All Rights Reserved.

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

ISL6722A, ISL6723A

Flexible Single Ended Current Mode PWM

Controllers

The ISL6722A and the ISL6723A are low power,

single-ended pulse width modulating (PWM) current mode

controllers designed for a wide range of DC/DC conversion

applications including boost, flyback, and isolated output

configurations. Similar to, and pin compatible with the

ISL6721, the ISL6722A and ISL6723A offer a modified

feature set. The ISL6722A replaces external synchronization

with a low power SLEEP feature that reduces standby

current to under 200µA. The ISL6723A changes the supply

voltage UVLO threshold to 13V. Additionally, the internal

over temperature protection has been removed in both

controllers. Other features remain the same and include a

low power mode during overvoltage and overcurrent

shutdown faults where the supply current drops to 200µA.

An internal 300ms delay timer prevents rapid “hiccup”

behavior when a shutdown fault does occur.

This advanced BiCMOS design features low operating

current, adjustable operating frequency up to 1MHz, and

adjustable soft-start.

Pinouts

ISL6722A, ISL6723A (16 LD SOIC, TSSOP)

ISL6722A (16 LD QFN)

Features

• 1A MOSFET Gate Driver

• 100µA Start-up Current

• Fast Transient Response with Peak Current Mode Control

• Adjustable Switching Frequency up to 1MHz

• Low Power Sleep Mode (ISL6722A)

• Low Power Shutdown Mode

• Delayed Restart from OV and OC Shutdown Faults

• Adjustable Slope Compensation

• Adjustable Soft-Start

• Adjustable Overcurrent Shutdown Delay

• Adjustable UV and OV Monitors

• Leading Edge Blanking

• 1% Tolerance Voltage Reference

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Telecom and Datacom Power

• Wireless Base Station Power

• File Server Power

• Industrial Power Systems

• Isolated Buck and Flyback Regulators

• Boost Regulators

GATE

ISENSE

SYNC/SLEEP

SLOPE

UV

OV

RTCT

VC

PGND

VCC

VREF

LGND

SS

COMP

1

2

3

4

5

6

7

16

15

14

13

12

11

10

8

9

ISET

FB

1

3

4

15

SYNC/SLEEP

SLOPE

UV

OV

16

14

13

2

12

10

9

11

6

57

8

VCC

VREF

LGND

SS

Ordering Information

PART

NUMBER*

(Note)

PART

MARKING

TEMP.

RANGE (°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL6722AABZ 6722AABZ

-40 to +105 16 Ld SOIC

M16.15

ISL6723AABZ 6723AABZ

-40 to +105 16 Ld SOIC

M16.15

ISL6722AAVZ 6722AAVZ

-40 to +105 16 Ld TSSOP M16.173

ISL6722AARZ 22AZ

-40 to +105 16 Ld QFN

L16.3x3B

*Add “-T” suffix to part number for tape and reel packaging.

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100%

matte tin plate termination finish, which are 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

FN9237.1

July 11, 2007