Datasheet

ISL6721
Flexible Single Ended Current Mode PWM Controller

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Typical Diagram

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Key Features

1A MOSFET Gate Driver
100µA Startup Current
Fast Transient Response with Peak Current Mode Control
Adjustable Switching Frequency up to 1MHz
Bi-directional Synchronization
Low Power Disable 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
Integrated Thermal Shutdown
1% Tolerance Voltage Reference
Pb-Free Available (RoHS Compliant)

Description

The ISL6721 is a low power, single-ended pulse width modulating (PWM) current mode controller designed for a wide range of DC/DC conversion applications including boost, flyback, and isolated output configurations. Peak current mode control effectively handles power transients and provides inherent overcurrent protection. Other features include a low power mode where the supply current drops to less than 200µA during overvoltage and overcurrent shutdown faults.

This advanced BiCMOS design features low operating current, adjustable operating frequency up to 1MHz, adjustable soft-start, and a bi-directional SYNC signal that allows the oscillator to be locked to an external clock for noise sensitive applications.