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PM6670A - Complete DDR2/3 Memory Power Supplies Controller

General Description

The device PM6670A is a complete DDR2/3 power supply regulator designed to meet JEDEC specifications.

It integrates a Constant On-Time (C.O.T.) buck controller, a 2Apk sink/source Low Drop Out regulator and a 15mA low noise buffered reference.

The C.O.T.

Key Features

  • switching.
  • Switching section (VDDQ).
  • 4.5V to 36V input voltage range.
  • 0.9V, ±1% voltage reference.
  • 1.8V (DDR2) or 1.5V (DDR3) fixed output voltages.
  • 0.9V to 2.6V adjustable output voltage.
  • 1.237V ±1% reference voltage available.
  • Very fast load transient response using constant-on-time control loop.
  • No RSENSE current sensing using low side MOSFETs' RDS(ON).
  • Negative current limit.
  • Latched OVP and UVP.

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www.DataSheet4U.com PM6670A Complete DDR2/3 memory power supplies controller Preliminary Data Features switching ■ Switching section (VDDQ) – 4.5V to 36V input voltage range – 0.9V, ±1% voltage reference – 1.8V (DDR2) or 1.5V (DDR3) fixed output voltages – 0.9V to 2.6V adjustable output voltage – 1.