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  1. input
  2. Vin(Min)


  3. v


  4. Output
  5. Vout(Max)


  6. v



2.7V-20V Vin, 15A Switch Current, Synchronous Boost Converter with Load Disconnection Control and Adjustable Adaptive Output


• Wide Input Voltage Range: 2.7V-20V

• Wide Output Voltage Range: 4.5V-21V

• Fully Integrated High Side FET Rdson 13mΩ and Low Side FET Rdson 11mΩ 

• Up to 96% Efficiency at Vin=7.2V, Vout=15V, and Iout=2A 

Adjustable Adaptive Output (AAO)

• Up to 15A Switch Current and Programmable Peak Current Limit

• Typical Shut-down Current: 1uA 

• Load Disconnection Control

• Programmable Switching Frequency: 200kHz-1MHz

• PFM Mode

• 4ms Bulit-in Soft Start

• Output Overvoltage Protection

• Thermal Shutdown Protection: 150°C

• Available in DFN-20L 3.5mmx4.5mmx0.9mm Package


The SCT12A3 is a high efficiency synchronous boost converter with fully integrated a 13mΩ high-side MOSFET and an 11mΩ low-side MOSFET, supporting 2.7V to 20V input voltage range and up to 15-A switch current. The input switch current limit can be adjustable with an external resistor. The SCT12A3 adopts constant off-time peak current control to provide fast transient response. An external compensation network allows flexibility setting loop dynamics to achieve optimal transient performance at different load conditions. The SCT12A3 features two-level Adjustable Adaptive Output (AAO). The SCT12A3 delivers much higher power to satisfy the instant big output power demanding by boosting the output to the higher programmed voltage level. The SCT12A3 offers the gate control for an external P-channel MOSFET to disconnect load from boost converter output. The safety feature prevents the damage on load from input shooting through to output in shutdown condition. It features thermal shutdown protection when the device over loads.

The device is available in a low-profile package DFN-20L 3.5mmx4.5mmx0.9mm with enhanced thermal power pad.


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Typical application block diagram

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