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The AP64500Q is an automotive-compliant, 5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 45mΩ high-side power MOSFET and a 20mΩ lowside power MOSFET to provide high-efficiency step-down DC-DC conversion. The AP64500Q device is easily used by minimizing the external component count due to its adoption of peak current mode control. The AP64500Q 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. The AP64500Q also features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. The device is available in an SO-8EP package.
AEC-Q100 Qualified with the Following Results
Device Temperature Grade 1: -40°C to +125°C TA Range
Device HBM ESD Classification Level H2
Device CDM ESD Classification Level C5
VIN: 3.8V to 40V
5A Continuous Output Current
0.8V ±1% Reference Voltage
25µA Low Quiescent Current (Pulse Frequency Modulation)
Programmable Switching Frequency: 100kHz to 2.2MHz
External Clock Synchronization: 100kHz to 2.2MHz
Up to 85% Efficiency at 5mA Light Load
Proprietary Gate Driver Design for Best EMI Reduction