L6731DTR datasheet(1/23 Pages) STMICROELECTRONICS

No de pièce	L6731DTR

Description	Adjustable step-down controller with synchronous rectification dedicated to DDR memory

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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June 2008

Rev 3

1/23

23

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

■ TON lower than 100 ns

■ 0 % to 100 % duty cycle

■ VDDR input sense

■ Regulates VTT and VTTREF within 1 % of VDDQ

■ Soft-start and inhibit

■ High current embedded drivers

■ Predictive anti-cross conduction control

■ Programmable high-side and low-side RDS(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

Applications

■ High performance / high density DC-DC

modules

■ Low voltage distributed DC-DC

■ niPoL converters

■ DDR memory supply

■ DDR termination supply

■ Graphic cards

HTSSOP16 (exposed pad)

Table 1.

Device summary

Order codes

Package

Packaging

L6731D

HTSSOP16

Tube

L6731DTR

HTSSOP16

Tape and reel

www.st.com

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STMicroelectronics	L6731B	351Kb / 24P	Adjustable step-down controller with synchronous rectification Dedicated to DDR Memory
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Description similaire - L6731DTR

Fabricant	No de pièce	Fiches technique	Description
STMicroelectronics	L6731B	351Kb / 24P	Adjustable step-down controller with synchronous rectification Dedicated to DDR Memory
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	L6910G	1Mb / 26P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
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