Space & Harsh Environment

Overview

Description

The ISL70005SEH is radiation hardened dual output Point-of-Load (POL) regulator combining the high efficiency of a synchronous buck regulator with the low noise of a Low Dropout (LDO) regulator. They are suited for systems with 3.3V or 5V power buses and can support continuous output load currents of 3A for the buck regulator and ±1A for the LDO. The buck regulator uses a voltage mode control architecture and switches at a resistor adjustable frequency of 100kHz to 1MHz. Externally adjustable loop compensation allows for an optimum balance between stability and output dynamic performance. The internal synchronous power switches are optimized for high efficiency and excellent thermal performance. The LDO is completely configurable independent of the switching regulator. It uses NMOS pass devices and separate chip bias voltage (L_VCC) to drive its gate, enabling the LDO to operate with a very low voltage at the L_VIN input. The LDO can sink and source up to 1A continuously, making it an ideal choice to power DDR memory. The ISL70005SEH is available in a space-saving 28 Ld ceramic dual flat-pack package or in die form. It is specified to operate across a temperature range of TA = -55 °C to +125 °C.

Features

  • Dual output regulator: Sync buck and LDO
  • Independent EN, SS and PG indicators
  • ±1% reference voltage
  • 1A current sourcing/sinking capability on LDO
  • External clock synchronization: 100kHz to 1MHz
  • Full military temperature range operation
    • TA = -55 °C to +125 °C
    • TJ = -55 °C to +150 °C
  • Radiation acceptance testing - ISL70005SEH
    • HDR (50-300rad(Si)/s): 100krad(Si)
    • LDR (0.01rad(Si)/s): 75krad(Si)
  • SEE hardness (see test report)
    • No SEB or SEL at LET 86.4MeV•cm2/mg
    • SET at LET 86.4MeV•cm2/mg <±3% ΔVOUT
    • No SEFI at LET 43MeV•cm2/mg
  • Electrically screened to DLA SMD 5962-19209

Applications

  • Point-of-load for low power FPGA core
  • Auxiliary and I/O supply voltages
  • DDR memory power for VDDQ and VTT rails
  • Distributed power system of satellite payloads

Documentation

Title Type Date
PDF1.42 MB
Datasheet
PDF2.79 MB
Application Note
PDF338 KB
Application Note
PDF4.89 MB
Brochure
PDF1024 KB
Manual - Development Tools
PDF1.20 MB
Manual - Development Tools
0 KB
Other
PDF206 KB
Product Advisory
PDF461 KB
Report
PDF1.69 MB
Report
PDF799 KB
White Paper
PDF533 KB
White Paper

Design & Development

Software & Tools

Software & Tools

Title Type Company
iSim:PE Offline Simulation TooliSim 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: Simulator Renesas

Software Downloads

Title Type Date
ZIP1.06 MB
PCB Design Files
ZIP2.01 MB
PCB Design Files

Boards & Kits

Boards & Kits

Models

Models

Title Type Date
SXSCH553 KB
Model - iSim
SXSCH542 KB
Model - iSim
SXSCH541 KB
Model - iSim