PL2628 是DC-DC 升壓轉換器，SOT23-6 封裝。第六腳是不連接 絲印打字：B628 The PL2628 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small, low power applications. The PL2628 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 PL2628 features automatic shifting to pulse frequency modulation