小巧，简洁的PWM降压控制器可取代高电流低压差稳压器搭配

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Modern electronic systems require a host of different regulated voltages to power their various subsystems. The number of voltage levels needed on boards has risen
as new generations of processors, memory, etc., have been introduced with lower voltage requirements. Also, the required voltage keeps decreasing so designers must include
5.0 V, 3.3 V and other voltage as low as 1.0 V. The trend in distributed power architectures is to design individual, nonisolated, Point−Of−Load (POL) converters to supply
power to each individual load. A power supply usually exists for 5.0 V and 3.3 V, but generating additional lower voltages often requires additional post−regulators， 大小：5.60 MB