ADP3209D 5-Bit, Programmable, Single-Phase, Synchronous Buck Controller

PublishTime：2021-06-21

The ADP3209D is a highly efficient, single−phase, synchronous buck switching regulator controller. With its integrated drivers, the ADP3209D is optimized for converting the notebook battery voltage to render the supply voltage required by high performance Intel chipsets. An internal 5−bit DAC is used to read a VID code directly from the chipset and to set the GMCH core voltage to a value within the range of 0.4 V to 1.25 V.
The ADP3209D uses a multi−mode architecture. It provides programmable switching frequency that can be optimized for efficiency depending on the output current requirement. In addition, the ADP3209D 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 ADP3209D also provides accurate and reliable current overload protection and a delayed power−good output. The IC supports On−The−Fly (OTF) output voltage changes requested by the chipset.
The ADP3209D is specified over the extended commercial temperature range of 0°C to 100°C and is available in a 32−lead LFCSP.
●Features:
■Single−Chip Solution
■Fully Compatible with the Intel® GMCH Chipset Voltage Regulator Specifications
■Integrated MOSFET Drivers
■Input Voltage Range of 3.3 V to 22 V
■±8 mV Worst−Case Differentially Sensed Core Voltage Error Overtemperature
■Automatic Power−Saving Modes Maximize Efficiency During Light Load Operation
■Soft Transient Control Reduces Inrush Current and Audio Noise
■Independent Current Limit and Load Line Setting Inputs for Additional Design Flexibility
■Built−In Power−Good Masking Supports Voltage Identification (VID) OTF Transients
■5−Bit, Digitally Programmable DAC with 0.4 V to 1.25 V Output
■Short−Circuit Protection with Latchoff Delay
■Output Current Monitor
■32−Lead LFCSP
■This is a Pb−Free Device

Brand of Product：	ON Semiconductor
Part#：	ADP3209D 、 ADP3209DJCPZ−RL More Part#
Product Category：	5-Bit, Programmable, Single-Phase, Synchronous Buck Controller 、 single−phase, synchronous buck switching regulator controller More
Application：	[ Notebook Power Supplies for Next−Generation Intel Chipsets ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	LFCSP32
Language：	English Chinese Chinese and English Japanese
Date of Creation：	March, 2010
Version Number：	Rev. 0
Data Encoding：	ADP3209D/D
Data Size：	521 KB

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