PM6641 Datasheet Monolithic VR for chipset and DDR2/3 supply

Manufacturer: STMicroelectronics

PM6641 monolithic vr for chipset and ddr2/3 supply by STMicroelectronics - Datasheet Preview

Datasheet Details

Part number	PM6641
Manufacturer	STMicroelectronics
File Size	2.28 MB
Description	Monolithic VR for chipset and DDR2/3 supply
Download	PM6641 Download (PDF)

General Description

The PM6641 is a monolithic voltage regulator module specifically designed to supply DDR2/3 memory and chipset in ultra-mobile PC and real estate constrained portable systems.

It integrates three independent, adjustable, constant frequency buck converters, a ±2 Apk Low Drop-Out (LDO) linear regulator and a ±15 mA low noise buffered reference.

Each regulator provides basic UV and OV Protections, programmable Soft-Start and Current Limit and active Soft-End.

Overview

PM6641 Monolithic VR for chipset and DDR2/3 supply for ultra-mobile PC (UMPC).

Key Features

0.8 V ±1 % internal voltage reference V to 5.5 V input voltage range Fast response, constant frequency, current mode control Three independent, adjustable, out-of-phase SMPS for DDR2/3 (VDDQ) and chipset supply Low noise DDR2/3 reference (VTTREF) ±2 Apk LDO for DDR2/3 termination (VTT) with foldback S0-S5 states compliant DDR2/3 section Active soft-end for all outputs Selectable tracking discharge for VDDQ Separate power-good signals Pulse skipping at light load Programmable current limit.

More Datasheets from STMicroelectronics

Part Number	Description
PM6644	350mA adjustable step-down regulator
PM6600	6-rows 30 mA LEDs driver
PM6610	2 to 4-cell Li-ion Li-FePO4 battery charger
PM6652	Single-phase Switching DC-DC Controllers & Smart Regulators
PM6670	Complete DDR2/3 memory power supply controller
PM6680	No Rsense dual step-down controller
PM6686	Dual step-down controller
PM6697	VR13 single phase controller
PM6697H	VR13 single-phase controller
PM6764	digital multiphase controller