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MP8848

Active
6A, 6V, High-Efficiency, Synchronous, Step-Down Switcher with I2C Interface
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Datasheet (EN)

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Product Description

The MP8848 is a highly integrated, high-frequency, synchronous, step-down switcher with an I2C control interface. The MP8848 can support up to 6A of load current over an input supply range from 2.7V to 6V with excellent load and line regulation. Constant-frequency hysteretic mode provides an extremely fast transient response without loop compensation to achieve high efficiency easily under light-load condition. The output voltage level can be controlled on-the-fly through a 3.4Mbps I2C serial interface. The voltage range can be adjusted from 0.6V to 1.235V in 5mV steps. The voltage slew rate, switching frequency, and power-saving mode are also selectable through the I2C interface. Full protection features include internal soft start, over-current protection (OCP), and over-temperature protection (OTP). The MP8848 requires a minimal number of readily available, standard, external components and is available in a compact QFN-15 (2mmx3mm) package.

Product Features

  • 2.7V to 6V Input Voltage Range
  • Up to 6A Load Current
  • Internal 32mO High-Side and 15mO Low-Side Power MOSFETs
  • I2C-Compatible Interface up to 3.4Mbps
  • I2C-Programmable Output Range from 0.6V to 1.235V in 5mV Steps
  • Factory Adjustable Switching Frequency from 0.85MHz to 2.2MHz
  • Power-Saving Mode Selectable via I2C
  • Internal 1ms Soft Start
  • Power Good Indicator
  • Current Overload and Thermal Shutdown Protection
  • Available in a QFN-15 (2mmx3mm) Package

Parametrics

  • fsw (max) (kHz)2200
  • Vin (min) (V)2.7
  • Vin (max) (V)6
  • Iout (max) (A)6
  • Isw Limit (typ) (A)11
  • Vfb (typ) (V)0.6
  • Iq (typ) (mA)0.3
  • Regulated Outputs1
  • Vout (max) (V)1.235
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-15 (2x3)
  • Control Mode Hysteretic        
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • Special FeaturesDynamic Voltage Scaling, I2C Interface, Programmable Frequency, Programmable Output Voltage, Selectable Power-Saving Mode

Evaluation Kit

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Kit details

The EV8864-Q-00A is used for demonstrating the performance of MPS’s MP8864. MP8864 is a highly integrated and high frequency synchronous step-down switcher with I2C control interface. It is optimized to support up to 4A load current over an input supply range from 4.5V to 21V with excellent load and line regulation.

Current-Mode operation provides fast transient response and eases loop stabilization. The output voltage level can be controlled, on-the fly through a 3.4Mbps I2C serial interface. Voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. Voltage slew rate, switching frequency and power savings mode are also selectable through the I2C interface. Fully protection features includes over current protection, over voltage protection and over temperature protection.

MP8864 is available in QFN15 (3mmx3mm) package.

$25.00 + tax