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Low Dropout Linear Regulator

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uP8809

2A Ultra Low Dropout Linear Regulator

Datasheets PDF

General Description

The uP8809 is an ultra low dropout linear regulator specifically designed to provide termination voltage for DDR memory system. Designed with low on-resistance NMOSFETs, this device is capable of sinking/sourcing up to 2A output current.This device works with dual supplies, a control input for the control circuitry and a power input as low as 1.0V for providing current to output. The output voltage is tightly regulated to track reference voltage input within 20mV variation with fast to line/load transient.

Other features include chip shutdown function, soft-start, on-chip thermal protection, and bi-directional current limit protection. The uP8809 is available in PSOP-8L, FSOP- 8L, WDFN3x3-8L packages with very low thermal resistance.

Pin Configuration & Typical Application Circuit


FSOP – 8L

PSOP – 8L

WDFN3x3 – 8L

Feature

  • Generate Termination Voltage for DDR Memory Interface
    • Output Voltage Traces Reference Input.
    • Capable of Sinking/Sourcing 2A.
    • Integrated Low RDS(ON) MOSFETs.
    • Excellent Line and Load Regulation.
  • Low External Part Count.
  • Bidirectional Current Limit Protection.
  • On-Chip Thermal Protection.
  • Support Pure MLCC.
  • RoHS Compliant and Halogen Free.

Application

  • Desktop PCs, Notebooks, and Workstations.
  • Graphic Cards.
  • Low Voltage Logic Supplies.
  • Microprocessor and Chipset Supplies.
  • Split Plane Microprocessor Supplies.
  • Advanced Graphics Cards Supplies.
  • SoundCards and Auxiliary Power Supplies.
  • SMPS Post Regulators.