High Efficiency, 12A, 17V, Synchronous Step-Down Converter with I2C Interface



The MP8869 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. It offers a fully integrated solution to achieve a 12A continuous and 15A peak output current with excellent load and line regulation over a wide input supply range. In the I2C control loop, the output voltage level can be controlled on-the-fly through an I2C serial interface. The voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. The voltage slew rate, frequency, current limit, hiccup/latch off protection, enable, and power savings mode are also selectable through the I2C interface. COT control operation provides fast transient response. An open drain power good pin indicates that the output voltage is in the nominal range. Full protection features include over-voltage protection, over-current protection and thermal shutdown. The MP8869 is available in a QFN-14 (3mmx4mm) package.


  • Wide 4.5V to 17V Operating Input Range
  • 12A Continuous/15A Peak Output Current
  • 1% Internal Reference Accuracy
  • I2C Programmable Output Range from 0.6V to 1.87V in 10mV Steps with Slew Rate Control
  • 5% Accuracy Output Voltage and Output Current Read Back Via I2C
  • Selectable PFM/PWM Mode and Adjustable Frequency & Current Limit Through I2C
  • 4 Different I2C Addresses Selectable
  • External Soft Start
  • Open Drain Power Good Indication
  • Output Over-Voltage Protection
  • Hiccup/Latch Off OCP Protection
  • QFN-14 (3mmx4mm) Package


  • fsw (max) (kHz)1250
  • 最小输入电压4.5
  • Vin (max) (V)17
  • Iout (max) (A)12
  • Isw Limit (typ) (A)14
  • Vfb (V)0.6
  • Iq (typ) (mA)0.42
  • 额定输出1
  • Vout (max) (V)5.5
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-14 (3x4)
  • Control ModeCOT
  • Common FeaturesExternal Soft Start, Light-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features4 种不同的 I2C 地址可选, 5% Accuracy Output Voltage and Output Current Readback via I2C, I2C Interface, Programmable Frequency, Programmable Output Voltage, Selectable Current Limit, Selectable PFM/PWM Mode

Configure multiple parameters of the MP88xx including output voltage and fsw.

This I2C GUI allows you to program the MP88xx . By using this I2C GUI, you can set the output voltage, switching frequency, slew rate, and operation mode. Please reference the parts respective user guides for installation and programing instructions.

System Requirements:

Windows 7 or later

.Net Framework 4 or later