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.

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