MPQ4470

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Industrial Grade, High-Efficiency, Fast-Transient, 5A, 36V Synchronous, Step-Down Converter



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产品描述

The MPQ4470/4470A is a fully-integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter. It offers a very compact solution to achieve a 5A, continuous-output current over a wide input-supply range with excellent load and line regulation. It also provides fast transient response and good stability for wide input-supply and load range. The MPQ4470/4470A operates at high efficiency over a wide output current load range. 
MPQ4470 has full protection features include SCP, OCP, OVP latch, UVP, and thermal shutdown. MPQ4470A has the same protection features to MPQ4470 except has no OVP latch function.
The MPQ4470/4470A requires a minimal number of readily-available, standard, external components, and is available in a space-saving 3mm×4mm, 20-pin, QFN package.

Programmable

产品特性

  • Wide 4.5V-to-36V Operating Input Range
  • Guaranteed 5A, Continuous Output Current
  • Internal 40mΩ High-Side, 20mΩ Low-Side Power MOSFETs
  • Proprietary Switching-Loss-Reduction Technology
  • 1% Reference Voltage
  • Programmable Soft-Start Time
  • Low Drop-out Mode
  • 200kHz-to-1MHz Switching Frequency
  • SCP, OCP, OVP Latch (MPQ4470 only), UVP, and Thermal Shutdown
  • Output Adjustable from 0.8V to 0.9×VIN
  • Available in a 3mm×4mm 20-pin QFN Package
  • Available in AEC-Q100 Grade 1

技术参数

  • fsw (max) (kHz)1000
  • Vin (min) (V)4.5
  • Vin (max) (V)36
  • Iout (max) (A)5
  • Isw Limit (typ) (A)8
  • Vfb (typ) (V)0.815
  • Iq (typ) (mA)0.5
  • Regulated Outputs1
  • Vout (max) (V)32.4
  • Vout (min) (V)0.8
  • GradeIndustrial
  • PackageQFN-20 (3x4)
  • Control ModeCOT
  • Common FeaturesExternal Soft Start, Light-Load Efficiency, Power Good, Synchronous Rectification
  • Special FeaturesProgrammable Frequency

参考资料