PM6641 - STMicroelectronics

PM6641 Monolithic VR for chipset and DDR2/3 supply

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 p.

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 and soft-start for all outputs Latched OVP, UVP protection Thermal protection VFQFPN-48 7x7 www.DataSh.