|
STEVAL-ISA050V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Monolithic VR for chipset and DDR2/3 demonstration board based on the PM6641 | |||
|
STEVAL-ISA050V1
Monolithic VR for chipset and DDR2/3 demonstration board
based on the PM6641
Data Brief
Features
â Switching section
â 0.8 V ±1% voltage reference
â 2.7 V to 5.5 V input voltage range
â Fast response, constant frequency, current
mode control
â Three independent, adjustable, SMPS For
DDR2/3 (VDDQ) and chipset supply
â S3-S5 states compliant DDR2/3 section
â Active soft-end for all outputs
â Selectable tracking discharge for VDDQ
â Separate Power Good signals
â Pulse skipping at light load
â Programmable current limit and soft-start
for all outputs
â Latched OVP, UVP protection
â Thermal protection
â Reference and termination voltages (VTTREF
and VTT)
â ±2 Apk LDO for DDR2/3 termination (VTT)
with fold back
â Remote VTT output sensing
â High-Z VTT output in S3
â ±15 mA low noise DDR2/3 buffered
reference (VTTREF)
STEVAL-ISA050V1
±15 mA low noise buffered reference. Each
regulator is provided of basic under voltage (UV)
and over voltage (OV) protections, programmable
soft-start and current limit, active soft-end and
pulse-skipping at light loads.
Application
â Supply for ultra-mobile PC (UMPC)
Description
The STEVAL-ISA050V1 demonstration board is
based on the PM6641, that is a monolithic voltage
regulator module, with internal Power MOSFET,
specifically designed to supply DDR2/3 memory
and chipset in ultra-mobile PC and real estate
portable systems. It integrates three independent,
adjustable, constant frequency buck converters, a
±2 Apk low drop-out (LDO) linear regulator and a
November 2008
Rev 1
For further information contact your local STMicroelectronics sales office.
1/4
www.st.com
4
|
▷ |