Electronic Component Solutions

Digitally-Enhanced Power Analogue buck controller

The MCP19123 offers excellent regulation accuracy, in a variable output analog PWM controller with an integrated microcontroller for supervisory and management functions. This unique product combines the performance of a high-speed analog solution, including high-efficiency and fast transient response, with the configurability and communication interface of a digital solution. Combining these solution types creates a new family of devices that maximizes the strengths of each technology to create a more cost-effective, configurable, high-performance power conversion solution


  • Wide Operating Voltage Range: 4.5-40V
  • Wide Output Voltage Range: 0.3-16V
  • Analog Emulated Average-Current Mode Pulse-Width Modulation (PWM) Control
    – Supports synchronous buck, or similar high/low side switch topologies
    – Operates from 100kHz to 1.6MHz, adjustable during operation
  • Integrated 8-Bit PIC® Microcontroller
    – 4kw flash memory
    – 256B RAM
  • Significant Configurability: Adjustable Analog Compensation, Switching Frequency, UVLO, OVLO, Start-up Behavior, MOSFET Deadtime, Configurable GPIO Pins, Internal Compensation Network, I2C Communication Interface, and fault behavior
  • Integrated Synchronous High- and Low-Side MOSFET Drivers
  • Integrated High-side Current Sense
  • Integrated 10 bit A/D Converter
  • Multi-phase and multi-rail support as a master or slave device
    – Can provide or synchronize to an external clock
    – Can provide or synchronize to an external reference
  • Shutdown and brown-out support


MCP19123 Datasheet

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