SparkFun Buck Regulator Breakout - 1.8V (AP3429A)

Sparkfun ElectronicsSKU: RB-Spa-2206
Manufacturer #: COM-21338

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Description

  • SparkFun Buck Regulator Breakout - 1.8V (AP3429A)
  • Incorporates a 2A step-down DC converter
  • Operates within a 2.7V to 5.5V input voltage range
  • Features a heat management copper pad
  • Offers multiple power connection options
  • Equipped with a red power indication LED

The SparkFun Buck Regulator Breakout - 1.8V (AP3429A) is a sophisticated device that incorporates the AP3429A from Diodes Inc., a 2 A step-down DC converter. This converter operates within an input voltage range of 2.7 V to 5.5 V. The device, measuring 1 inch by 1 inch, is designed to deliver a regulated 1.8 V output, which is managed by an EN (enable) pin.

To manage excess heat, the device is equipped with a 0.6 inch by 0.5 inch copper pad, which allows for the attachment of a heat sink to the bottom of the board.

This full-size buck regulator breakout offers multiple options for connecting input and output power. It includes a pre-assembled screw terminal for temporary connections, the possibility to solder on a barrel jack for an external power supply, and five PTH pins for a more permanent installation.

The device also features a red power indication LED that illuminates when the power output is enabled. The board is designed with four mounting holes that are compatible with 4-40 hardware.

  • 1x SparkFun Buck Regulator Breakout - 1.8V (AP3429A)
  • 1 x 1 inch

Buck Board

  • Three power input/output options:
    • Pre-assembled 4-pin screw terminal
    • Five 0.1 inch spaced PTH pins
    • Four plated slots for a DC barrel jack (input only)
  • Power connections:
    • VIN - Power In (2.7 V to 5.5 V)
    • GND - Common Ground
    • VOUT - Power Out (Regulated 1.8 V)
    • EN - Enable (Pull high to enable the power output)
  • Red, power LED indicator
  • 0.5 x 0.6 inch Plated copper pad (for heat sinks)

AP3429A

  • VIN: 2.7 to 5.5 V
  • VOUT: 0.6 V to VIN
  • 2 A Continuous Output Current
  • 90 µA No-Load Quiescent Current
  • 1 MHz Switching Frequency
  • Protection Circuitry
  • Undervoltage Lockout (UVLO)
  • Input Overvoltage Protection
  • Over Current Protection
  • Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown (160 °C / 320 °F)

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