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BA3258HFP Dual Output LDO Regulators

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The BA3258HFP is fixed 2-output low-saturation, low dropout voltage regulator with a voltage accuracy at both outputs of ±2%. This voltage regulator incorporates both over-current protection and thermal shutdown (TSD) circuits in order to prevent damage due to output short-circuiting and overloading, respectively.


Pin Configuration of BA3258HFP

Pin No.

Pin Name





Power Supply Pin



Output Voltage Monitor Pin



Ground Pin



1.5V Output pin



3.3V Output Pin



  • Input Supply Voltage:  4.75V to 14V
  • Output Voltage: 3.3V, 1.5V  
  • Output Current: 1A
  • Output Type: Fixed
  • Dropout Voltage: 1.1 V
  • PSRR / Ripple Rejection - Typ: 52dB (120Hz)
  • High Ripple Rejection
  • Pd - Power Dissipation: 2.3 W
  • Protection Features: Over Current, Over Temperature
  • Available in TO-263-6, D²Pak (5 Leads + Tab), TO-263BA Packages


Note: The complete technical details can be found in the datasheet given at the end of this page.


Equivalent for BA3258HFP:  BA33D15HFP, BA33D18HFP

Alternative LDO Regulators: LP2985, AMS1117, MIC5225


BA3258HFP Introduction

The BA3258HFP is an industry-grade, low cost, single-chip, high current Low Dropout  Voltage Regulator, which has an input voltage of 14V max, this IC features dual output stage. It can produce two regulated output voltages one 3.3V, and one 1.5V from a single input. This is a very space-efficient LDO that comes in an HRP5 package.

The BA3258HFP has a quiescent current of 10mA with an operating temperature range from -40°C to +125°C. BA3258HFP is generally used in include FPDs, TVs, DSPs, DVDs, and other battery-Powered Equipment’s.


How to use the BA3258HFP

BA3258HFP low dropout regulator comes in 5 and package in 2 pins are output voltage pins. Supply the input voltage to the V-in pin and we get the regulated 3.3V 1.5V at the output pins. The input and output capacitors are used for ripple filtering. Connect a ceramic capacitor with a capacitance of approximately 3.3μF between VCC and GND close to the pins. Also, connect a 1µf capacitor between Vo and GND pins in order to prevent output oscillation.


Applications of BA3258HFP

  • Battery-Powered Equipment
  • FPDs, TVs, DSPs, DVDs
  • Consumer/Personal Electronics
  • High-Efficiency Linear Power Supplies


2-D Model of BA3258HFP

2-D dimensions for BA3258HFP 5-pin package is given below:

BA3258HFP Regulator Dimensions

Component Datasheet

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