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UR5517 - 3A DDR BUS TERMINATION REGULATOR

General Description

The UR5517 is a linear regulator which provides up to 3 Amp bi-directional sourcing and sinking capability for DDR1/2/3 SDRAM bus terminator applications.

It only requires 20uF of ceramic output capacitance by a integrated operational amplifier which provides fast load transient response.

Key Features

  • S.
  • Input Voltage Range:3~5.5V.
  • VLDOIN Voltage Range:1.2V~3.6V.
  • DDR1/2/3 Termination Voltage.

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Other Datasheets by Unisonic Technologies

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UR5512 2A DDR BUS TERMINATION REGULATOR
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UR5516A 3A BUS TERMINATION REGULATOR
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Full PDF Text Transcription (Reference)

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UNISONIC TECHNOLOGIES CO., LTD UR5517 LINEAR INTEGRATED CIRCUIT 3A DDR BUS TERMINATION REGULATOR  DESCRIPTION The UR5517 is a linear regulator which provides up to 3 Amp bi-directional sourcing and sinking capability for DDR1/2/3 SDRAM bus terminator applications. It only requires 20uF of ceramic output capacitance by a integrated operational amplifier which provides fast load transient response. The UR5517 also includes two control pins, S3 & S5. If S3 were set in low level, VTT will be turned off and left Hi-Z(sleep-state mode).If setting S5 were set in low level, both VTT and VTTREF will be turned off and discharged to ground(soft-off mode).  FEATURES * Input Voltage Range:3~5.5V * VLDOIN Voltage Range:1.2V~3.