ISL6740, ISL6741 Flexible Double-Ended Voltage and Current Mode PWM Controllers 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 dead time. 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.


  • Precision duty cycle and dead time control
  • 95μA start-up current
  • Adjustable delayed overcurrent shutdown and restart (ISL6740)
  • Adjustable short-circuit shutdown and restart
  • 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 (RoHS compliant)


  • Telecom and Datacom Power
  • Wireless Base Station Power
  • File Server Power
  • Industrial Power Systems
  • DC Transformers and Buss Regulators

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TSSOP Tube 960
Active TSSOP Reel 2500

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL6740, ISL6741 Datasheet Datasheet PDF 1.47 MB
Application Notes & White Papers
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
PCN21006 - Alternate assembly facility of the listed Renesas TSSOP packaged products Product Change Notice PDF 131 KB
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 98 KB
PCN11112A - Data Sheet Specification Change for Intersil ISL6740* and ISL6741* Products Product Change Notice PDF 127 KB
PCN11112 - Data Sheet Specification Change for Intersil ISL6740* and ISL6741* Products Product Change Notice PDF 122 KB
ISL6741 iSim:PE Model Schematic SXSCH 407 KB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs. Renesas