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

Key Specifications

• DC/DC Converter (Buck)
  • 1.5A Output Current
  • Programmable VOUT from:Buck1 : 0.8V–2.0VBuck2 : 1.0V–3.5V
  • Up to 96% Efficiency
  • 2 MHz PWM Switching Frequency
  • ±3% Output Voltage Accuracy
  • Automatic Soft Start
• Linear Regulators (LDO)
  • Programmable VOUT of 1.0V–3.5V
  • ±3% Output Voltage Accuracy
  • 300 mA Output Currents
  • 25 mW (Typ) Dropout

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