S-8351 Datasheet - ABLIC

S-8351/8352 Series www.ablicinc.com © ABLIC Inc., 2002-2010 STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0_02 The S-8351/8352 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage source, an oscillation circuit, a comparator and PFM control circuit.

The PFM control circuit allows the duty ratio to be automatically switched according to the load (at light load : 50%, at high output current