AN1723 L5973AD催效率的DC-DC转换器设计

AN1723 L5973AD催效率的DC-DC转换器设计

AN1723
Application note

Designing with L5973AD high efficiency DC-DC converter

Introduction
The L5973AD is a step-down monolithic power switching regulator capable to deliver up to 2
A at output voltages from 1.235 V to 35 V. The operating input voltage ranges from 4.4 V to
36 V. It is realized in BCDV technology and the power switching element is realised by a
P-Channel D-MOS transistor. It doesn’t require a bootstrap capacitor, and the duty cycle can
range up to 100%. An internal oscillator fixes the switching frequency at 500 kHz. This
mini