Smart Regulators. L6706 Datasheet

L6706 Regulators. Datasheet pdf. Equivalent

Part L6706
Description Single-phase Switching DC-DC Controllers & Smart Regulators
Feature www.DataSheet4U.com L6706 VR11.1 single phase controller with integrated driver Features ■ ■ ■ ■ ■ .
Manufacture ST Microelectronics
Datasheet
Download L6706 Datasheet



L6706
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L6706
VR11.1 single phase controller with integrated driver
Features
8-bit programmable output up to 1.60000 V -
Intel VR11.1 DAC
High current embedded driver
High output voltage accuracy
Programmable droop function
Imon output
Load transient boost LTB Technology™ to
minimize the number of output capacitors
Full differential current sense across inductor
Differential remote voltage sensing
Adjustable voltage offset
LSLess startup to manage pre-biased output
Feedback disconnection protection
Preliminary overvoltage protection
Programmable overcurrent protection
Programmable overvoltage protection
Adjustable switching frequency
SSEND and OUTEN signal
VFQFPN-40 6x6 mm package with exp. pad
Applications
VTT and VAXG rails
CPU power supply
High density DC/DC converters
VFQFPN-40 6 x 6 mm
Description
The device implements a single phase step-down
controller with integrated high current driver in a
compact 6x6 mm body package with exposed
pad.
The device embeds VR11.x DACs: the output
voltage ranges up to 1.60000 V managing D-VID
with high output voltage accuracy over line and
temperature variations.
Imon capability guarantee full compatibility with
VR11.1 enabling additional power saving
technique.
Programmable droop function allows to supply all
the latest Intel CPU rails.
Load transient boost LTB Technology™ reduces
system cost by providing the fastest response to
load transition.
The controller assures fast protection against load
over current and under / over voltage. Feedback
disconnection prevents from damaging the load in
case of disconnections in the system board.
Table 1. Device summary
In case of over-current, the system works in
constant current mode until UVP.
Order codes
Package
Packing
L6706
L6706TR
VFQFPN-40
Tray
Tape and reel
May 2009
Doc ID 15698 Rev 1
1/47
www.st.com
47



L6706
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Contents
L6706
1 Principle application circuit and block diagram . . . . . . . . . . . . . . . . . . . 3
1.1 Principle application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Pins description and connection diagrams . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Voltage identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 DAC and current reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Differential remote voltage sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8 Voltage positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.1 Offset (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.2 Droop function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9 Droop thermal compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10 Output current monitoring (IMON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
11 Load transient boost technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
12 Dynamic VID transitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
13 Enable and disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
14 Soft-start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2/47 Doc ID 15698 Rev 1





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