模拟和接口芯片

SGM61230

SGM61230

4.5V to 28V Input, 3A Output, Synchronous Buck Converter

产品特性

The SGM61230 is a synchronous Buck converter with a wide input voltage range of 4.5V to 28V. This device can deliver up to 3A output current over a wide input voltage. It is an easy-to-use device with power switches and peak current mode control compensation all integrated in a small 6-pin package. A typical 5ms soft-start ramp is also included to minimize the inrush current.

This device employs cycle-by-cycle peak current limit, output over-voltage protection and thermal shutdown with auto recovery. The current limit is implemented for both switches and has fold-back feature to prevent overheating (and thermal shutdown) when an output short is detected. Auto recovery after over-current, output short, overheating or over-voltage fault maintains the system operational with no shutdown.

This converter has a fixed 410kHz switching frequency that minimizes the EMI noise problems. However the actual frequency drops during PSM (pulse skip mode) to maximize efficiency at light load. It also drops in some fault conditions.

The SGM61230 is available in a Green TSOT-23-6 package.

PIN CONFIGURATIONS

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FEATURES
  • Wide 4.5V to 28V Input Voltage Range

  • 3A Continuous Output Current

  • Integrated 66mΩ/36mΩ Power MOSFETs

  • Low Quiescent Current: 25μA (TYP)

  • Shutdown Current: 2μA (TYP)

  • 5ms Internal Soft-Start Time

  • Fixed 410kHz Switching Frequency

  • Pulse Skip Mode and PWM Mode

  • Peak Current Mode Control

  • Internal Loop Compensation

  • Over-Current Protection for Both MOSFETs

  • Output Over-Voltage Protection

  • Adjustable Input Under-Voltage Lockout

  • Thermal Shutdown with Auto Recovery

  • Available in a Green TSOT-23-6 Package


PIN TO PIN REPLACE  TI'S TPS54302

SGM61230 AND TPS54302参数对比可知:

1、 SGM61230与TPS54302电性能参数基本一致,都采用PWM/PFM控制方式,在轻载时提供高效率;

2、 相同的400KHZ工作频率和VFB值能保证替换时外围器件参数相差不大,可以直接替换验证;

3、 相比TPS54302,SGM61230的低功耗30uA在静态功耗方面表现更出色;

4、 另外两者都具备工业级温度(Tj)-40~125℃,有效保证芯片可靠性。

 



APPLICATIONS


产品应用

12V Distributed Power Supply Buses

Industrial and Consumer Applications

White Goods

Audio Equipment

Set Top Boxes


规格
型号DataSheetDimension (mm)Description