Diodes Incorporated – Buck converter drives 2A loads at high efficiency


The AP3512E from Diodes Incorporated is a 500kHz synchronous DC-DC buck converter, capable of driving a 2A load with high efficiency up to 93% and providing excellent line and load regulation.

The AP3512E operates over an input-voltage range of 4.5V to 18V and provides an adjustable output voltage.

Operating at a fixed frequency of 500kHz, the converter integrates an N-channel power MOSFET switch which is characterised by its low on- resistance. The device’s current-mode control provides for fast transient response and a cycle-by-cycle current limit.

• 1μA quiescent current
• Programmable soft-start
• Over-voltage and over-temperature protections