Product overview
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.
Pulse-skipping technique is performed to increase efficiency at very light load.
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All 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
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STMicroelectronics - PM6641
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| PM6641TR | Active | VFQFPN 48 7x7x1.0 mm | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM6641TR | | | distributors No availability of distributors reported, please contact our sales office |
PM6641TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors