Datasheet

ISL6741
Flexible Double Ended Voltage and Current Mode PWM Controllers

Overview
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Typical Diagram

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Key Features

Precision Duty Cycle and Deadtime Control
95µA Startup Current
Adjustable Delayed Overcurrent Shutdown and Re-start (ISL6740)
Adjustable Short Circuit Shutdown and Re-start
Adjustable Oscillator Frequency Up to 2MHz
Bidirectional Synchronization
Inhibit Signal
Internal Over-Temperature Protection
System Over-Temperature Protection Using a Thermistor or Sensor
Adjustable Soft-start
Adjustable Input Undervoltage Lockout
Fault Signal
Tight Tolerance Voltage Reference Over Line, Load, and Temperature
Pb-Free Available (RoHS Compliant)

Description

The ISL6740, ISL6741 family of adjustable frequency, low power, pulse width modulating (PWM) voltage mode (ISL6740) and current mode (ISL6741) controllers is designed for a wide range of power conversion applications using half-bridge, full bridge, and push-pull configurations. These controllers provide an extremely flexible oscillator that allows precise control of frequency, duty cycle, and deadtime.

This advanced BiCMOS design features low operating current, adjustable switching frequency up to 1MHz, adjustable soft-start, internal and external over-temperature protection, fault annunciation, and a bidirectional SYNC signal that allows the oscillator to be locked to paralleled units or to an external clock for noise sensitive applications.