B628芯片电路图，B628升压IC的PCB布局

The PW5328B is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small, low power applications. The PW5328B switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height. Internal soft-start results in small inrush current and extends battery life.

The PW5328B features automatic shifting to pulse frequency modulation mode at light loads. The PW5328B includes under-voltage lockout, current limiting, and thermal overload protection to prevent damage in the event of an output overload. The PW5328B is available in a small 6-pin SOT-23 package.

FEATURES