4.5-V TO 28-V INPUT VOLTAGE, 3.3-V FIXED OUTPUT, 1.7-A OUTPUT CURRENT, NON-SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED MOSFET4.5 V至28 V的输入电压, 3.3 V固定输出, 1.7 A的输出电流,集成MOSFET的非同步降压稳压器