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PM6641TR

Active

Monolithic VR for Chipset and DDR2/3 Supply for Ultra-Mobile PC (UMPC) Applications

Quantity $ per Unit Savings
1 - 9$6.640%
10 - 24$5.9710%
25 - 99$5.6415%
100 - 249$4.8926%
250 - 499$4.6430%
500$4.1637%
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In stock
$6.64
Parameter NameParameter Value
Input Voltage Min Volt2.7
Input Voltage Max Volt5.5
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameVFQFPN 48 7x7x1.0 mm

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.


Pulse-skipping technique is performed to increase efficiency at very light load.

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