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LP3906
  • LP3906
  • LP3906
  • LP3906

LP3906

ACTIVE

Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface Key Specifications Key Specifications

Texas Instruments LP3906 Product Info

1 April 2026 0

Parameters

Processor supplier

Generic

Processor name

Generic

Regulated outputs (#)

4

Step-down DC/DC converter

2

Step-up DC/DC converter

0

LDO

2

Vin (min) (V)

2.7

Vin (max) (V)

5.5

Vout (min) (V)

0.8

Vout (max) (V)

3.5

Iout (max) (A)

1.5

Configurability

Factory programmable, Software configurable

Features

Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Synchronous rectification, Thermal shutdown, UVLO fixed

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Step-down DC/DC controller

0

Step-up DC/DC controller

0

Iq (typ) (mA)

0.07

Switching frequency (max) (kHz)

2000

Shutdown current (ISD) (typ) (µA)

0.04

Switching frequency (typ) (kHz)

2000

Package

WQFN (NHZ)-24-20 mm² 5 x 4

Features

  • 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

All trademarks are the property of their respective owners.

  • 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

All trademarks are the property of their respective owners.

Description

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.

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.

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