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L6750 Datasheet(PDF) 1 Page - STMicroelectronics

Part # L6750
Description  2 to 5 phase controller with LTB technology for VR11.x and AMD6bit CPUs featuring I2C interface
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6750 Datasheet(HTML) 1 Page - STMicroelectronics

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Data Brief
For further information contact your local STMicroelectronics sales office.
February 2008
Rev 1
1/3
3
L6750
2 to 5 phase controller with LTB technology®
for VR11.x and AMD6bit CPUs featuring I2C interface
Features
LTB technology® to enhance load transient
I2C power manager
2 to 5 scalable phase operation
Dual-edge asynchronous architecture
Flexible driver support
PSI# input and IMON output for VR11.1
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 inductor
DCR
Integrated remote sense buffer
Adaptive Voltage Positioning (AVP)
Feedback disconnection protection
Adjustable oscillator from 100 kHz to 1 MHz
LSLess startup to manage pre-biased output
Programmable Soft-start
Threshold sensitive enable pin for VTT
Sensing
VFQFPN48 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
Description
L6750 is a two-to-five phase controller designed
to power Intel’s most demanding PIV 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.
L6750 features Power Manager I2C to implement
overspeeding and other power management
options without using any external component.
The device embeds selectable DAC: Output Volt-
age is programmable up to 1.6000V (Intel VR10
and VR11.x DACs) or up to 1.550V (AMD 6bit
DAC) managing DVID transitions with ±0.5% out-
put voltage accuracy over line, load and tempera-
ture variations.
The device assures fast protection against load
over current, under / over voltage and feedback
disconnections. Low-Side-Less start-up allows
soft-start over pre-biased output avoiding danger-
ous current return through the main inductors as
well as negative spike at the load side.L6750 is
available in VFQFPN48 7x7 mm package
VFQFPN48 - 7x7 mm
Table 1.
Device summary
Order code
Package
Packing
L6750
VFQFPN48
Tube
L6750TR
VFQFPN48
Tape and reel
www.st.com


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