The LP3906 is a multi-function, programmable Power Management Unit, optimized for low power FPGAs, Microprocessors and DSPs.

This device integrates two highly efficient 1.5A Step-Down DC/DC converters with dynamic voltage management (DVM), two 300mA Linear Regulators and a 400kHz I²C compatible interface to allow a host controller access to the internal control registers of the LP3906. The LP3906 additionally features programmable power-on sequencing and is offered in a tiny 5 x 4 x 0.8mm WQFN-24 pin package.

• Compatible with Advanced Applications Processors and FPGAs
• 2 LDOs for Powering Internal Processor Functions and I/Os
• High Speed Serial Interface for Independent Control of Device Functions and Settings
• Precision Internal Reference
• Thermal Overload Protection
• Current Overload Protection
• 24-lead 5 × 4 × 0.8 mm WQFN Package
• Software Programmable Regulators

• DC/DC Converter (Buck)
  • 1.5A Output Current
  • Programmable VOUT from:Buck1 : 0.8V2.0VBuck2 : 1.0V3.5V
  • Up to 96% Efficiency
  • 2 MHz PWM Switching Frequency
  • ±3% Output Voltage Accuracy
  • Automatic Soft Start
• Linear Regulators (LDO)
  • Programmable VOUT of 1.0V3.5V
  • ±3% Output Voltage Accuracy
  • 300 mA Output Currents
  • 25 mW (Typ) Dropout

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• Regulated outputs (#)
• 4
• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 5.5
• Iout (Max) (A)
• 1.5
• Rating
• Catalog
• LDO
• 2
• Iq (Typ) (mA)
• 0.07
• Features
• Comm Control, Dynamic Voltage Scaling, Enable, Over Current Protection, Synchronous Rectification, Thermal Shutdown, UVLO Fixed
• Processor name
• Generic
• Processor supplier
• Generic
• Shutdown current (ISD) (Typ) (uA)
• 0.04
• Switching frequency (Typ) (kHz)
• 2000
• Configurability
• Factory programmable, Software configurable

LP3906的完整型号有：LP3906SQ-DJXI/NOPB、LP3906SQ-FXPI/NOPB、LP3906SQ-JXXI/NOPB、LP3906SQ-VPFP/NOPB，以下是这些产品的关键参数及官网采购报价：

LP3906SQ-DJXI/NOPB，工作温度：-40 to 85，封装：WQFN (NHZ)-24，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3906SQ-DJXI/NOPB的批量USD价格：1.082（1000+）

LP3906SQ-FXPI/NOPB，工作温度：PropertyValue，封装：WQFN (NHZ)-24，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3906SQ-FXPI/NOPB的批量USD价格：1.082（1000+）

LP3906SQ-JXXI/NOPB，工作温度：-40 to 85，封装：WQFN (NHZ)-24，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3906SQ-JXXI/NOPB的批量USD价格：1.082（1000+）

LP3906SQ-VPFP/NOPB，工作温度：-40 to 85，封装：WQFN (NHZ)-24，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3906SQ-VPFP/NOPB的批量USD价格：1.082（1000+）