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ISL73005SEH Datasheet Radiation Hardened Dual Output 3a Synchronous Buck And Ldo Regulator

Manufacturer: Intersil (now Renesas)

Overview: Datasheet ISL70005SEH, ISL73005SEH Radiation Hardened Dual Output 3A Synchronous Buck and ±1A LDO Regulator for DDR VDDQ and VTT The ISL70005SEH and ISL73005SEH are radiation hardened dual output Point-of-Load (POL) regulators bining 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 pensation 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 pletely 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 and ISL73005SEH are available in a space saving 28 Ld ceramic dual flat-pack package or in die form. They are specified to operate across a temperature range of TA = -55°C to +125°C.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Key Features

  • 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 ISL70005SEH ○ HDR (50-300rad(Si)/s): 100krad.

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ISL73005SEH Distributor