ADP5134

PRODUCTION

Dual 3 MHz, 1200 mA Buck Regulators and Two 300 mA LDO Regulators With Precision Enable and Power-Good Output

Viewing:

Overview

  • Main input voltage range of 2.5 V to 5.5 V
  • Two 1200 mA buck regulators and two 300 mA LDO regulators
  • 24-lead, 4 mm × 4 mm LFCSP package
  • Regulator accuracy of ±1.8%
  • Factory programmable or external adjustable VOUTx
  • Precision enable pins for easier power sequencing
  • Factory selectable power-good pin
  • 3 MHz buck operation with forced PWM and automatic PWM/PSM modes
  • BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V
  • LDO1/LDO2: output voltage range from 0.8 V to 5.2 V
  • LDO1/LDO2: input voltage range from 1.7 V to 5.5 V
  • LDO1/LDO2: high PSRR and low output noise

The ADP5134 combines two high performance buck regulators and two low dropout (LDO) regulators. It is available in a 24-lead 4 mm × 4 mm LFCSP.

The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. When the MODE pin is set to high, the buck regulators operate in forced pulse-width modulation (PWM) mode. When the MODE pin is set to low, the buck regulators operate in PWM mode when the load is above a predefined threshold. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM), improving the light load efficiency.

The two buck regulators operate out of phase to reduce the input capacitor requirement. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5134 LDO regulators extend the battery life of portable devices. The ADP5134 LDO regulators maintain power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage of 500 mV.

Regulators in the ADP5134 are activated through dedicated enable pins. The default output voltages can be externally set in the adjustable version or factory programmable to a wide range of preset values in the fixed voltage version.

Applications

  • Power for processors, application specific integrated circuits
    (ASICs), field programmable gate arrays (FPGAs), and
    radio frequency (RF) chipsets
  • Portable instrumentation and medical devices
  • Space constrained devices

ADP5134
Dual 3 MHz, 1200 mA Buck Regulators and Two 300 mA LDO Regulators With Precision Enable and Power-Good Output
ADP5134-cdl ADP5134 Pin Configuration
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Tools & Simulations

5V uPMU BuckDesigner

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

Open Tool

Evaluation Kits

eval board
EVAL-ADP5134

ADP5134 Evaluation Board

Product Details

This user guide describes the hardware for the evaluation of the ADP5134 and includes detailed schematics and PCB layouts. The ADP5134 is available in a 24-lead 4 mm × 4 mm LFCSP package.

The ADP5134 LFCSP evaluation board has two step-down regulators with two LDOs that enable evaluation of the ADP5134. The evaluation board is available with an adjustable voltage option.


Full details on the parts are provided in the ADP5134 data sheet.

EVAL-ADP5134
ADP5134 Evaluation Board
ADP5134 Evaluation Board

Latest Discussions

Recently Viewed