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MAX8794

MAX8794

Low-Voltage DDR Linear Regulator

Low-Cost, Low-Voltage DDR Linear Regulator Sources and Sinks Up to 3A Peak (typ) Using Internal n-Channel MOSFETs

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Overview

Description

The MAX8794 DDR linear regulator sources and sinks up to 3A peak (typ) using internal n-channel MOSFETs. This linear regulator delivers an accurate 0.5V to 1.5V output from a low-voltage power input (VIN = 1.1V to 3.6V). The MAX8794 uses a separate 3.3V bias supply to power the control circuitry and drive the internal n-channel MOSFETs.

The MAX8794 provides current and thermal limits to prevent damage to the linear regulator. Additionally, the MAX8794 generates a power-good (PGOOD) signal to indicate that the output is in regulation. During startup, PGOOD remains low until the output is in regulation for 2ms (typ). The internal soft-start limits the input surge current.

The MAX8794 powers the active-DDR termination bus that requires a tracking input reference. The MAX8794 can also be used in low-power chipsets and graphics processor cores that require dynamically adjustable output voltages. The MAX8794 is available in a 10-pin, 3mm x 3mm, TDFN package.
MAX8794: Typical Operating Circuit MAX8794: Typical Operating Circuit Enlarge+

Key Features

  • Internal Power MOSFETs with Current Limit (3A typ)
  • Fast Load-Transient Response
  • External Reference Input with Reference Output Buffer
  • 1.1V to 3.6V Power Input
  • ±15mV (max) Load-Regulation Error
  • Thermal-Fault Protection
  • Shutdown Input
  • Power-Good Window Comparator with 2ms (typ) Delay
  • Small, Low-Profile, 10-Pin, 3mm x 3mm TDFN Package
  • Ceramic or Polymer Output Capacitors

Applications/Uses

  • Active Termination Buses
  • Chipset/RAM Supplies as Low as 0.5V
  • DDR Memory Termination
  • Graphics Processor Core Supplies
  • Notebook/Desktop Computers

Design Resources

Quality And Environmental

Product Reliability Reports: MAX8794.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

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