[信息与通信]电源芯片 Specification of HM03145 恒流源.pdf

HM03145 High Efficiency DC/DC Module FEATURES DESCRIPTION ● Complete Switch Mode Power Supply The HM03145 is a complete 3A, DC/DC step ● Wide Input Voltage Range from +1.8V to 25V down power supply. Included in the package ● 3A DC Output Current have the PWM controller, power MOSFETs, ● Adjustable +0.5V to + 5V Output Range inductor, and most of support components. ● Constant On-time Control for Fast Transient Operating over an input voltage range of 1.8V to Response 25V and supports an output voltage range of 0.5V ● Power Saving Mode Option to 5V that set by dividing resistor. The high ● Enable Function Option efficiency design delivers 3A continuous current. ● Power Good Indicator ● Internal Soft-Start Only bulk input, output capacitors and few ● Output Over-Voltage Protection parameter setting components are needed to ● Output Under-Voltage Protection finish the design. ● Over-Current Protection by Low-side The HM03145 uses constant on-time control with MOSFET RDS(ON) Sensing extremely minimum on-time better for transient ● Over-Temperature Protection response. The HM03145 has internal soft-start,