PM6641
Overview
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.
- 0.8 V ±1% internal voltage reference
- 2.7 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
