Overview

The ISL73005SEH 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 ISL73005SEH 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.

ISL70005SEH_ISL73005SEH Functional Diagram
ISL70005SEH_ISL73005SEH Functional Diagram
  • Electrically screened to DLA SMD 5962-19209
  • Dual output regulator: 3A Synchronous buck and ±1A LDO
  • DDR, DDR2, DDR3, and DDR4 VDDQ/VTT regulator
  • Independent EN, SS, and PG indicators
  • ±1% reference voltage
  • External clock synchronization: 100kHz to 1MHz
  • Full military temperature range operation
    • TA = -55 °C to +125 °C
    • TJ = -55 °C to +150 °C
  • TID Rad Hard Assurance (RHA) testing
    • LDR (0.01rad(Si)/s): 75krad(Si)
  • SEE hardness (see test report)
    • No DSEE with VDD = 6.0V at LET 86.4MeV•cm2/mg
    • No SEFI at LET 43MeV•cm2/mg

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

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
ISL70005SEH, ISL73005SEH DDR Tracking iSim: PE ModelISL70005SEH, ISL73005SEH FPGA Bode iSim: PE ModelISL70005SEH, ISL73005SEH FPGA Load Step iSim: PE ModelR34AN0002EU: ISL70005SEH, ISL73005SEH iSim:PE Model vs Silicon Application Report
 Simulator Renesas
1 item

Software Downloads
Type Title Date
Software & Tools - Other
ISL70005x, ISL73005x Power Loss and Efficiency Estimator
XLSX 669 KB
PCB Design Files
ISL70005SEHDEMO1Z Design Files
ZIP 1.06 MB
PCB Design Files
ISL70005SEHEV2Z Design Files
ZIP 2.01 MB
3 items
ISL70005SEHDEMO1Z Demo Board

ISL70005SEHDEMO1Z

Demonstration
Learn More

Rad Hard, Dual Output Point-of-Load, Integrated Synchronous Buck and LDO Demonstration Board

The ISL70005SEHDEMO1Z demonstration board is designed to demonstrate the performance of the ISL70005SEH radiation hardened, 3A buck regulator and 1A source/sink LDO....

Featured Documents:
ISL70005SEHDEMO1Z Demonstration Board Manual
ISL70005SEHEV2Z Evaluation Board

ISL70005SEHEV2Z

Evaluation
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Rad Hard, Dual Output Point-of-Load, Integrated Synchronous Buck and LDO Evaluation Board

The ISL70005SEHEV2Z evaluation board is designed to evaluate the performance of the ISL70005SEH radiation hardened, 3A buck regulator and 1A source/sink LDO. The same...

Featured Documents:
ISL70005SEHEV2Z Evaluation Board Manual
ISLRTG4DEMO1Z Reference Design (Top)

ISLRTG4DEMO1Z

Reference Designs
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Renesas Radiation Hardened Power Solution for RTG4 FPGA

Over the last decade satellites and spacecrafts have seen an exponential increase in the need for on-board data processing and storage demands. Additionally, major...

Featured Documents:
ISLRTG4DEMO1Z User Manual
ISLKU060DEMO1Z Reference Board Front

ISLKU060DEMO1Z

Reference Designs
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Renesas Rad Hard Power Management Reference Design for AMD's Space Grade XQRKU060

Over the last decade satellites and spacecrafts have seen an exponential increase in the need for on-board data processing and storage demands. Additionally, major...

Featured Documents:
ISLKU060DEMO1Z Reference Manual

ISLVERSALDEMO2Z

Demonstration
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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
    Buy / Sample
    Part Number
    ISL73005SEHVF
    circleActive
    memory
    spa
    view_in_ar
    		CFP Tray 25 5962L1920902VXC
    ISL73005SEHVX
    circleActive
    memory
    view_in_ar
    		10 5962L1920902V9A
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