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UR5516 - 3A BUS TERMINATION REGULATOR

General Description

The UTC UR5516 is designed to provide a regulated voltage with bi-directional output current for DDR-SDRAM termination.

Key Features

  • S.
  • Provide bi-direction current - Sourcing or sinking current up to 3A.
  • 1.25V/0.9V output for DDR I/II.

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Other Datasheets by Unisonic Technologies

Part Number Description
UR5516A 3A BUS TERMINATION REGULATOR
UR5516B 3A BUS TERMINATION REGULATOR
UR5512 2A DDR BUS TERMINATION REGULATOR
UR5515 1.5A/3A BUS TERMINATION REGULATOR
UR5517 3A DDR BUS TERMINATION REGULATOR

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UNISONIC TECHNOLOGIES CO., LTD UR5516 LINEAR INTEGRATED CIRCUIT 3A BUS TERMINATION REGULATOR SOP-8  DESCRIPTION The UTC UR5516 is designed to provide a regulated voltage with bi-directional output current for DDR-SDRAM termination. Current-limit work to limit the short-circuit current, on-chip thermal shutdown provides protection against any combination of overload that would create excessive junction temperature. The output voltage tracks the voltage at VREF pin. A resistor divider connected to VIN, GND and VREF pins is used to provide a half voltage of VIN to VREF pin. In addition, an external ceramic capacitor and an open-drain transistor connected to VREF pin provides soft-start and shutdown control respectively. Pulling and holding the VREF to GND shuts off the output.