MP3423

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9A, 600kHz High Efficiency, Synchronous Step-Up Converter with Output Disconnect in 2x2mm QFN Package



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产品描述

The MP3423 is a high-efficiency, synchronous, current-mode, step-up converter with output disconnect.

The MP3423 starts up from an input voltage as low as 1.9V, while providing inrush current limiting and output short-circuit protection.  The integrated P-channel synchronous rectifier improves efficiency and eliminates the need for an external Schottky diode.  This P-channel disconnects the output from the input during shutdown. 

The 600kHz switching frequency allows small external components, while the internal compensation and soft-start minimize external component count.  The MP3423 provides a compact solution for a 5V output, 3.1A load requirement, using a supply voltage down to 2.8V.

The MP3423 is available in 14-pin QFN 2mmx2mm package.

产品特性

  • Up to 98% Efficiency
  • 1.9V to 5.5VInputRange
  • 2.5V to 5.5VOutputRange
  • Internal Synchronous Rectifier
  • 600kHz Fixed Switching Frequency
  • 9A Typical Switch Current Limit
  • 43uA Quiescent Current
  • High Efficiency overFullLoadRange
  • Internal Soft-start and Compensation
  • True Output Load Disconnect from Input
  • OCP, SCP, OVP and OTP Protection
  • Small 2x2mm QFN14 Package

技术参数

  • Vout (min) (V)2.5
  • 最小输入电压1.9
  • Vin (max) (V)5.5
  • Isw Limit (typ) (A)9
  • Iq (typ) (mA)0.043
  • 额定输出1
  • fsw (max) (kHz)600
  • Vout (max) (V)5.5
  • Vfb (V)0.807
  • PackageQFN-14 (2x2)
  • GradeCatalog
  • Special FeaturesEnable, Output Disconnect
  • SS内部
  • Down ModeNo
  • PGNo
  • Input/Output DisconnectYes

9A, 600kHz Synchronous Step-up Converter with Output Disconnect Evaluation Board

EV3423-G-00A Evaluation Board is designed to demonstrate the capability of MP3423. MP3423 is a high-efficiency, synchronous, current-mode, step-up converter with output disconnect.

The MP3423 can provide small size solution for 5V/3.1A load from a supply voltage down to 2.8V. The integrated P-channel synchronous rectifier improves efficiency and eliminates the need for an external Schottky diode. The PMOS disconnects the output from the input when the part shuts down.

The 600kHz switching frequency allows for small external components, while the internal compensation and soft-start minimize the external component count. The MP3423 is available in 14-pin QFN 2mmx2mm package.

¥ 171.25 + tax