Rev.
2.
0_00
STEP-UP, SUPER-SMALL PACKAGE, PFM CONTROL SWITCHING
REGULATOR / SWITCHING
REGULATOR CONTROLLER
S-8351/8352 Series
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 : 75%), enabling products with a low ripple over a wide range, high efficiency, and high output current (A, B, and D type).
Products with a fixed duty ratio of 75% are also available (C type).
The S-8351 Series can configure a step-up switchin...