Datasheet Diodes AP64501


3.8V To 40V, 5A Low Iq Synchronous Buck


Data Brief AP64501
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3.8V To 40V, 5A Low Iq Synchronous Buck with Programmable Soft-start Time
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Detailed Description

The AP64501 is a 5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V.

The device fully integrates a 45mΩ highside power MOSFET and a 20mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP64501 device is easily used by minimizing the external component count due to its adoption of peak current mode control.

The AP64501 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. AP64501 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.




Parameters / ModelsAP64501SP-13AP64501SP-EVM
Efficiency95 %95 %
Frequency570 kHz570 kHz
HS RDS(ON)45 mΩ45 mΩ
LS RDS(ON)20 mΩ20 mΩ
Maximum Input Voltage40 V40 V
Minimum Input Voltage3.8 V3.8 V
Output Current5 A5 A
Output VoltageADJ VADJ V
Quiescent Current Typ0.025 mA0.025 mA
Shutdown Current Typ1 µA1 µA

Model Line

Series: AP64501 (2)

Manufacturer's Classification