buck controller. L6756 Datasheet

L6756 controller. Datasheet pdf. Equivalent

Part L6756
Description 2/3/4 phase buck controller
Feature L6756 2/3/4 phase buck controller for VR10, VR11.1 and AM2 processor applications www.DataSheet4U.ne.
Manufacture STMicroelectronics
Datasheet
Download L6756 Datasheet



L6756
www.DataSheet4U.net
L6756
2/3/4 phase buck controller
for VR10, VR11.1 and AM2 processor applications
Data Brief
Features
LTB technology® enhances load transient
response
2 to 4 scalable phase operation
Dual-edge asynchronous architecture
PSI# input with programmable strategy
IMON output
Flexible driver support
7/8 bit programmable output - VR10/11.x DAC
6 bit programmable output - AMD AM2 DAC
0.5 % output voltage accuracy
Full-differential current sense across DCR
Integrated remote sense buffer
Feedback disconnection protection
Adjustable oscillator from 100 kHz to 1 MHz
LSLess startup to manage pre-biased ouptut
Programmable Soft-start
Threshold sensitive enable Pin for VTT
Sensing
VFQFPN40 7x7 mm package
Applications
High-current VRM / VRD for desktop / server /
workstation CPUs
Graphic cards
Low-voltage, high-current power supplies
High-density DC / DC converters
VFQFPN40
Description
L6756 is a two-to-four phase controller designed
to power Intel’s most demanding Processors and,
most in general, low-voltage, high-current power
supplies. The device features LTB technology® to
provide the fastest response to load transients
thus minimizing the output filter composition.
L6756 embeds selectable DAC: Output Voltage is
programmable up to 1.6000 V (Intel VR10 and
VR11.x DACs) or up to 1.550 V (AMD 6bit DAC)
managing DVID transitions with ±0.5 % output
voltage accuracy over line, load and temperature
variations.
The device assures fast protection against load
over current and under / over voltage. Feedback
disconnection prevents from damaging the load in
case of misconnections in the system board.
Low-Side-Less start-up allows soft-start over pre-
biased output avoiding dangerous current return
through the main inductors as well as negative
spike at the load side.
L6756 is available in VFQFPN40 7x7 mm
package.
Table 1.
Device summary
Order code
L6756
L6756TR
Package
VFQFPN40
VFQFPN40
Packing
Tube
Tape & Reel
February 2008
Rev 1
For further information contact your local STMicroelectronics sales office.
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www.st.com
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L6756
Revision history
1 Revision history
Table 2. Document revision history
Date
Revision
15-Feb-2008
1 Initial release.
Changes
L6756
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