L6731D Datasheet, PDF (1/23 Pages) STMicroelectronics – Adjustable step-down controller with synchronous rectification dedicated to DDR memory

L6731D
Adjustable step-down controller with synchronous rectification
dedicated to DDR memory
Features
■ Input voltage range from 1.8 V to 14 V
■ Supply voltage range from 4.5 V to 14 V
■ Adjustable output voltage down to 0.6 V with
±0.8 % Accuracy over line voltage and
temperature (0 °C~125 °C)
■ Fixed frequency voltage mode control
■ T_ON lower than 100 ns
■ 0 % to 100 % duty cycle
■ V_DDR input sense
■ Regulates V_TT and V_TTREF within 1 % of V_DDQ
■ Soft-start and inhibit
■ High current embedded drivers
■ Predictive anti-cross conduction control
■ Programmable high-side and low-side R_DS(on)
sense over-current-protection
■ Selectable switching frequency 250 kHz /
500 kHz
■ Power good output
■ Sink/source capability for DDR memory and
termination supply
■ Over-voltage protection
■ Thermal shutdown
■ Package: HTSSOP16
HTSSOP16 (exposed pad)
Applications
■ High performance / high density DC-DC
modules
■ Low voltage distributed DC-DC
■ niPoL converters
■ DDR memory supply
■ DDR termination supply
■ Graphic cards
Table 1.
Device summary
Order codes
L6731D
L6731DTR
June 2008
Package
HTSSOP16
HTSSOP16
Rev 3
Packaging
Tube
Tape and reel
1/23
www.st.com
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