MAX1809 Datasheet 3a / 1mhz / Ddr Memory Termination Supply

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-2142; Rev 1; 9/02 3A, 1MHz, DDR Memory Termination Supply General.

Datasheet Details

Part number	MAX1809
Manufacturer	Maxim Integrated (now Analog Devices)
File Size	803.27 KB
Description	3A / 1MHz / DDR Memory Termination Supply
Datasheet	MAX1809_MaximIntegratedProducts.pdf

The MAX1809 is a reversible energy flow, constant-offtime, pulse-width modulated (PWM), step-down DC-DC converter.

It is ideal for use in notebook and subnotebook puters that require 1.1V to 5V active termination power supplies.

This device

an internal PMOS power switch and internal synchronous rectifier for high efficiency and reduced component count. The internal 90m Ω PMOS power switch and 70mΩ NMOS synchronous-rectifier switch easily deliver continuous load currents up to 3A. The MAX1809 accurately tracks an external reference voltage, produces an adjustable output from 1.1V to VIN, and achieves efficiencies as high as 93%. The MAX1809 uses a unique current-mode, constantoff-time, PWM control scheme that allows the output to so.

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