Overview

The ISL738841ASEH is a high-performance, radiation hardened drop-in replacement for the popular 28C4x and 18C4x PWM controllers suitable for a wide range of power conversion applications including boost, flyback and isolated output configurations. Fast signal propagation and output switching characteristics make these ideal products for existing and new designs. Features include up to 13.2V operation, low operating current, 90µA typical start-up current, adjustable operating frequency to 1MHz, and high peak current drive capability with 50ns rise and fall times.

ISL73884xASEH_ISL7884xASxH Functional Diagram
ISL73884xASEH_ISL7884xASxH Functional Diagram
  • Electrically screened to DLA SMD #5962-07249
  • QML qualified per MIL-PRF-38535 requirements
  • 1A MOSFET gate driver
  • 90µA typical start-up current, 125µA maximum
  • 35ns propagation delay current sense to output
  • Fast transient response with peak current-mode control
  • 9V to 13.2V operation
  • Adjustable switching frequency to 1MHz
  • 50ns rise and fall times 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
  • Pb-free available (RoHS compliant)
  • Radiation acceptance testing - ISL73884xASEH
    • LDR (0.01rad(Si)/s): 50krad(Si)

Applications

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

Design & Development

Software & Tools
iSim:PE Offline Simulation Tool
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.
Downloads
iSim:PE Software v9.1ISL7884xASRH, ISL7884xASEH, ISL73884xASEH & ISL71043M Flyback Application iSim:PE Model
 Simulator Renesas
1 item

Software Downloads
Type Title Date
Software & Tools - Software
iSim:PE Software v9.1
Log in to Download ZIP 145.10 MB
1 item

ISLVERSALDEMO2Z

Demonstration
Learn More

Power Management Reference Design for AMD Versal XQRVC1902

The ISLVERSALDEMO2Z demo board provides the power management for the AMD Xilinx Space Grade Versal ACAP AI Core VC1902 using Renesas' Radiation Hardened Power...

Featured Documents:
ISLVERSALDEMO2Z Demonstration Board Manual

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    DLA SMD
    Moisture Sensitivity Level (MSL)
    Buy / Sample
    Part Number
    ISL738841ASEHVF
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    		CFP Tray 25 5962L0724910VXC Not Applicable
    ISL738841ASEHVD
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    memory
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    		SBDIP Tray 25 5962L0724910VPC Not Applicable
    ISL738841ASEHVX
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    view_in_ar
    		DIE 100 5962L0724910V9A
    ISL738841ASEHD/PROTO
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    Samples Available
    		 SBDIP Tray 1 Not Applicable Get Samples,
    ISL738841ASEHF/PROTO
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    Samples Available
    		 CFP Tray 1 Not Applicable Get Samples,
    ISL738841ASEHX/SMPL
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    memory
    view_in_ar
    Samples Available
    		 Die Waffle Pack 5 Not Applicable Get Samples,
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