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The AP62400 is a 4A, synchronous buck converter with a wide input voltage range of 4.2V to 18V. The device fully integrates a 50mΩ high-side power MOSFET and a 22mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.
The AP62400 device is easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.
The AP62400 design is optimized for Electromagnetic Interference (EMI) reduction. The device has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching.
AP62400 is available in TSOT26 package.
VIN: 4.2V to 18V
Output Voltage (VOUT): 0.8V to 7V
4A Continuous Output Current
8V ± 1% Reference Voltage (TA = +25°C)
190μA Low Quiescent Current (Pulse Frequency Modulation)
800kHz Switching Frequency (VIN = 12V, VOUT = 5V)
Up to 83% Efficiency at 5mA Light Load
Proprietary Gate Driver Design for Best EMI Reduction