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ADP3208D fiches techniques PDF

ON Semiconductor - Synchronous Buck Controller

Numéro de référence ADP3208D
Description Synchronous Buck Controller
Fabricant ON Semiconductor 
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ADP3208D fiche technique
ADP3208D
www.DataSheet4U.com
7-Bit, Programmable,
Dual-Phase, Mobile, CPU,
Synchronous Buck
Controller
The ADP3208D is a highly efficient, multiphase, synchronous buck
switching regulator controller. With its integrated drivers, the
ADP3208D is optimized for converting the notebook battery voltage
into the core supply voltage required by high performance Intel
processors. An internal 7bit DAC is used to read a VID code directly
from the processor and to set the CPU core voltage to a value within
the range of 0.3 V to 1.5 V. The phase relationship of the output signals
ensures interleaved 2phase operation.
The ADP3208D uses a multimode architecture run at a
programmable switching frequency and optimized for efficiency
depending on the output current requirement. The ADP3208D
switches between singleand dualphase operation to maximize
efficiency with all load conditions. The chip includes a programmable
load line slope function to adjust the output voltage as a function of the
load current so that the core voltage is always optimally positioned for
a load transient. The ADP3208D also provides accurate and reliable
shortcircuit protection, adjustable current limiting, and a delayed
powergood output. The IC supports OnTheFly (OTF) output
voltage changes requested by the CPU.
The ADP3208D is specified over the extended commercial
temperature range of 10°C to 100°C and is available in a 48lead
LFCSP.
Features
http://onsemi.com
LFCSP48
CASE 932AD
MARKING DIAGRAM
ADP3208D
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YYWW = Date Code
G = PbFree Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 36 of this data sheet.
SingleChip Solution
Fully Compatible with the Intel® IMVP6+t
Specifications
Integrated MOSFET Drivers
Input Voltage Range of 3.3 V to 22 V
Selectable 1or 2Phase Operation with Up to 1 MHz
per Phase Switching Frequency
Guaranteed ±8 mV WorstCase Differentially Sensed
Core Voltage Error Overtemperature
Automatic PowerSaving Mode Maximizes Efficiency
with Light Load During Deeper Sleep Operation
Soft Transient Control Reduces Inrush Current and
Audio Noise
Active Current Balancing Between Output Phases
Independent Current Limit and Load Line Setting
Inputs for Additional Design Flexibility
BuiltIn PowerGood Blanking Supports Voltage
Identification (VID) OTF Transients
7Bit, Digitally Programmable DAC with 0.3 V to
1.5 V Output
ShortCircuit Protection with Latchoff Delay
Clock Enable Output Delays the CPU Clock Until the
Core Voltage is Stable
Output Load Current Monitor
This is a PbFree Device
Applications
Notebook Power Supplies for Next Generation
Intel® Processors
© Semiconductor Components Industries, LLC, 2010
February, 2010 Rev. 0
1
Publication Order Number:
ADP3208D/D

PagesPages 30
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