Overview

The radiation hardened HS-1825ARH, HS-1825AEH pulse width modulator is designed to be used in high-frequency switched-mode power supplies and can be used in either current-mode or voltage-mode. It is well suited for single-ended boost converter applications. Device features include a precision voltage reference, low power start-up circuit, high-frequency oscillator, wide-band error amplifier and fast current-limit comparator. The use of proprietary process capabilities and unique design techniques results in fast propagation delay times and high output current over a wide range of output voltages. Constructed with the Intersil radiation hardened Silicon Gate (RSG) Dielectric Isolation BiCMOS process, the HS-1825ARH, HS-1825AEH have been specifically designed to provide highly reliable performance when exposed to harsh radiation environments.

HS-1825AEH_HS-1825ARH Functional Diagram
HS-1825AEH_HS-1825ARH Functional Diagram
  • Electrically screened to DLA SMD # 5962-99558
  • QML qualified per MIL-PRF-38535 Requirements
  • Radiation environment
  • Maximum total dose: 300 krad(SI)
  • Vertical architecture provides low dose rate immunity
  • DI RSG process provides latch-up immunity
  • Low start-up current: 100µA (Typical)
  • Fast propagation delay: 80ns (Typical)
  • 12V to 30V operation
  • 1A (peak) dual output drive capability
  • 5.1V reference
  • Undervoltage lockout
  • Programmable soft-start
  • Switching frequencies to 500kHz
  • Latched overcurrent comparator with full cycle restart
  • Programmable leading edge blanking circuit

Applications

  • Current or voltage mode switching power supplies
  • Motor speed and direction control

Documentation

Design & Development

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.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    DLA SMD
    Buy / Sample
    Part Number
    HS0-1825ARH-Q
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    		100 5962F9955801V9A
    HS1-1825ARH/PROTO
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    		SBDIP Tube 1
    HS1-1825ARH-8
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    		SBDIP Tube 25 5962F9955801QEC
    HS1-1825ARH-Q
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    		SBDIP Tube 25 5962F9955801VEC
    HS9-1825ARH/PROTO
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    		CFP Tray 1
    HS9-1825ARH-8
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    		CFP Tray 25 5962F9955801QXC
    HS9-1825ARH-Q
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    		CFP Tray 25 5962F9955801VXC
    HS0-1825ARH/SAMPLE
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    		DIE 5
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