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MP8869S

Active
2.85-18V, 12A, High-Efficiency, Synchronous Step-Down Converter with Integrated Telemetry via I2C Interface
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Datasheet (EN)

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Product Description

The MP8869S is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8869S offers a fully integrated solution that achieves 12A of continuous current and 15A of peak output current with excellent load and line regulation over a wide input supply range. The output voltage level can be controlled on-the-fly through an I2C serial interface. The reference voltage range can be adjusted from 0.6V to 1.108V in 4mV steps. The voltage slew rate, frequency, current limit, hiccup/latch-off protection, enable, and power-saving mode are also selectable through the I2C interface. Constant-on-time (COT) control operation provides fast transient response. An open-drain power good (PG) pin indicates when the output voltage is in the nominal range. Full protection features include over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown. The MP8869S is available in a QFN-14 (3mmx4mm) package.

Product Features

  • Wide 2.85V to 18V Operating Input Range
  • 12A Continuous/15A Peak Output Current
  • 1% Internal Reference Accuracy
  • I2C-Programmable Reference Range from 0.6V to 1.108V in 4mV Steps with Slew Rate Control
  • 5% Accuracy Output Voltage and Output Current Monitoring via I2C
  • Selectable PFM/PWM Mode, Adjustable Frequency and Current Limit through I2C
  • Four Different Selectable I2C Addresses
  • External Soft Start (SS)
  • Open-Drain Power Good (PG) Indication
  • Output Over-Voltage Protection (OVP)
  • Hiccup/Latch-Off Over-Current Protection (OCP)
  • Available in a QFN-14 (3mmx4mm) Package

Parametrics

  • fsw (max) (kHz)1250
  • Vin (min) (V)2.85
  • Vin (max) (V)18
  • Iout (max) (A)12
  • Isw Limit (typ) (A)14
  • Vfb (typ) (V)0.72
  • Iq (typ) (mA)0.42
  • 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 Different I2C Addresses Selectable, 5% Accuracy Output Voltage and Output Current Readback via I2C, I2C Interface, Programmable Frequency, Programmable Output Voltage, Selectable Current Limit, Selectable PFM/PWM Mode

Evaluation Kit

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Kit details

This GUI can be used for evaluating the output voltage options supported by the MP5416 and for optimizing output voltage selection.  It does not require evaluation board. Refer to app note AN139 for more details. 

System Requirements:

Windows 7 or later

.Net Framework 4 or later

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