S-8351/8352 Series
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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 : 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-...