MP9942

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High Efficiency 2A, 36V, 410kHz, Synchronous Step Down Converter with Power Good


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产品描述

The MP9942 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current with excellent load and line regulation over a wide input supply range. The MP9942 has synchronous mode operation for higher efficiency over the output current load range. Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shutdown. The MP9942 requires a minimal number of readily-available standard external components, and is available in a space-saving 8-pin TSOT23 package.

Configurable

产品特性

  • Wide 4V to 30V Continuous Operating Input Range
  • 36V Input Transient Tolerance
  • 90mO/55mO Low RDS(ON) Internal Power MOSFETs
  • High-Efficiency Synchronous Mode Operation
  • 410kHz Switching Frequency
  • Synchronizes from 200kHz to 2.2MHz External Clock
  • High Duty Cycle for Automotive Cold-crank
  • Internal Power-Save Mode
  • Internal Soft-Start
  • Power Good Indicator
  • Over-Current Protection with Hiccup
  • Thermal Shutdown
  • Output Adjustable from 0.8V
  • Available in an 8-pin TSOT-23 package

技术参数

  • fsw (max) (kHz)410
  • 最小输入电压4
  • Vin (max) (V)30
  • Iout (max) (A)2
  • Isw Limit (typ) (A)4.2
  • Max Duty Cycle (%)0.95
  • Vfb (V)0.792
  • Iq (typ) (mA)0.85
  • 额定输出1
  • Vout (max) (V)28.5
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageTSOT23-8
  • Control ModeCurrent Mode
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features外部频率同步

High Efficiency 2A, 36V, 410kHz Sync. Step-Down Switch Evaluation Board With PowerGood

The MP9942 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current with excellent load and line regulation over a wide input supply range. The MP9942 has synchronous mode operation for higher efficiency over the output current load range.

Current-mode operation provides fast transient response and eases loop stabilization.

Full protection features include over-current protection and thermal shut down.

The MP9942 requires a minimal number of readily-available standard external components, and is available in a space-saving 8-pin TSOT23 package.

¥ 171.25 + tax