The ISL71043M is a PWM controller suitable for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Its fast signal propagation and output switching characteristics make this an ideal product for existing and new designs. Features include up to 13. 2V operation, 2. 9mA operating current, 90μA typical start-up current, adjustable operating frequency to 1MHz and, 1A current drive capability with 35ns rise and 29ns fall times. The ISL71043M is offered in either an 8 Ld SOIC or an 8 Ld TDFN package and both are specified across the extended temperature range of -55°C to +125°C.


  • 1A MOSFET gate driver
  • 90µA typical start-up current, 125µA maximum
  • Moisture Sensitivity Level (MSL) rating is 1
  • 35ns propagation delay current sense to output
  • Fast transient response with Peak Current mode control
  • 9V to 13.2V operatio; Rising UVLO: 8.4V
  • Maximum duty cycle: 100%
  • Adjustable switching frequency to 1MHz
  • 35ns rise time and 29ns fall time with 1nF output load
  • Trimmed timing capacitor discharge current for accurate dead time/maximum duty cycle control
  • 1.5MHz bandwidth error amplifier
  • Tight tolerance voltage reference over line, load, and temperature
  • ±3% current limit threshold
  • Ni/Pd/Au-Ag lead finish (Tin (Sn) free)
  • Characterized radiation levels
    • Low Dose Rate (LDR) (0.01rad(Si)/s): 30krad(Si)
    • Single event burnout LET 43MeV•cm2/mg




  • Current mode switching power supplies
  • Isolated buck and flyback regulators
  • Boost regulators
  • Direction and speed control in motors
  • Control of high current FET drivers


Type Title Date
Datasheet PDF 1.47 MB
Technical Brief PDF 356 KB
Brochure PDF 4.85 MB
Product Advisory PDF 414 KB
Report PDF 322 KB
Report PDF 370 KB
Application Note PDF 338 KB
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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.
Simulator Renesas
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