MP8757

Active
7A, 5-18V, COT Synchronous Step-down Converter with PG


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Product Description

The MP8757 is a fully-integrated, high frequency, synchronous, rectified, step-down converter. It offers a very compact solution to achieve a 7A output current over a wide input-supply range with excellent load and line regulation. MP8757 employs the Constant-On-Time (COT) control scheme, which provides fast transient response, eases loop stabilization. The COT control scheme provides seamless transition to PFM mode at light load operation which boosts the light load efficiency. Under voltage lockout is internally set as 4.5V. An open drain power good signal indicates output voltage is within its nominal voltage range. Full protection features include OCP, OVP, and thermal shut down. MP8757 requires minimum number of external components and are available in QFN21 (3mmx4mm) package.

Programmable

Product Features

  • Wide 5V to 18V Operating Input Range
  • 7A Continuous Output Current
  • Low RDS(ON) Internal Power MOSFETs
  • Proprietary Switching Loss Reduction Technique
  • Internal Soft Start
  • Output Discharge
  • 500kHZ Switching Frequency
  • OCP, OVP, UVP Protection and Thermal Shutdown
  • Latch off Reset via EN or Power Cycle
  • Output Adjustable from 0.604V to 5.5V

Parametrics

  • fsw (max) (kHz)500
  • Vin (min) (V)5
  • Vin (max) (V)18
  • Iout (max) (A)7
  • Isw Limit (typ) (A)9.5
  • Vfb (typ) (V)0.604
  • Iq (typ) (mA)0.19
  • Regulated Outputs1
  • Vout (max) (V)5.5
  • Vout (min) (V)0.604
  • GradeCatalog
  • 封装QFN-21 (3x4)
  • Control ModeCOT
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • 特性Output Discharge

Reference Materials