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MP5402 Image

The MP5402 from Monolithic Power Systems is a Frequency Selectable Stepdown Converter IC that is ideal for smart cigarette lighter adapter USB chargers and USB dedicated charging ports (DCP) applications. It requires an input voltage of 7-36 V. This PMIC monolithically integrates a step-down converter with two USB current-limit switches and a charging port identification circuit along with control logic, current sense, current sense amplifier, oscillator, bootstrap regulator, buck and power MOSFETs, PWM comparator, auto-detector, and protection circuits. It supports DCP schemes for the battery charging specification (BC1.2), divider mode, and 1.2 V/1.2 V mode, thereby eliminating the need for external user interaction.

This PMIC offers programmable line drop compensation and includes hiccup current limit, output over-voltage protection (OVP), under-voltage lock-out (UVLO), and thermal shutdown to prevent over-current or over-heating-related damages. It is available in a surface-mount package that measures 4 x 4 mm.

Product Specifications

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Product Details

  • Part Number
  • Manufacturer
    Monolithic Power Systems
  • Description
    Frequency Selectable Stepdown Converter IC


  • Configuration
    Buck Regulator
  • Supply Voltage
    7 to 36 V
  • Output Current
    2.4 A
  • RoHS Compliant
  • Temperature Operating Range
    -40 to 125 Degree C
  • Applications
    USB Dedicated Charging Ports (DCP), Smart Cigarette Lighter Adapter USBChargers
  • Dimensions
    4 x 4 mm
  • Package Type
    Surface Mount
  • Package

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