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Low Dropout Linear Regulator

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uP8817Q

2A Ultra Low Dropout Linear Regulator for DDR4 Memory VTT Termination

Datasheets PDF

General Description

The uP8817Q is an ultra low dropout regulator for Double Date Rate (DDR) termination system. It is specifically designed for low input voltage and low external component count systems. The uP8817Q is capable of sinking/ sourcing up to 2A output current, providing fast load transient and only requires a minimum 3x10uF ceramic output capacitor. The uP8817Q supports all power requirements for DDR VTT bus termination, DDR4 especially.

Other features include thermal protection, bi-directional current limit protection. The uP8817Q is available in a PSOP-8L package.

Pin Configuration & Typical Application Circuit

PSOP-8L
(uP8817Q)

Feature

  • VIN Input Voltage Range: 1V to 3.6V
  • VCNTL Input Voltage: 2.9V to 5.5V
  • Low External Component Count
  • Enable/Disable Control from REFIN
  • Discharge MOSFET at VOUT Shutdown
  • Up to 2A Source/Sink Current
  • Support DDR3 and Low Power DDR3/DDR4
  • Stable with Pure MLCC as Output Cap
  • RoHS Compliant and Halogen Free

Application

  • DDR Memory Termination
  • Desktop PCs, Notebook Computers, and Server