S-8351/8352 Series STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER

PublishTime：2022-07-11

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 switching regulator with an external coil, capacitor, and diode. A protection circuit turns off the built-in MOS FET when the voltage at the CONT pin exceeds the limit to prevent it from being damaged. In addition to the above features, the small package and low current consumption, makes the S-8351 Series ideal for applications such as the power supply unit of portable equipment.
The S-8352 Series, which features an external transistor, is suitable for applications requiring a high output current.
●Features
■Low voltage operation : Startup at 0.9 V min. (I-OUT = 1 mA) guaranteed
■Low current consumption :
▲During operation 23.2 μA (V-OUT = 3.3 V, typ.)
▲During shutdown 0.5 μA (max.)
■Duty ratio :
▲50 % / 75 % built-in auto-switching-type PFM control circuit (A, B, and D type)
▲75 % built-in fixed-type PFM control circuit (C type)
■External parts : Coil, capacitor, and diode
■Output voltage :
▲Selectable in 0.1 V steps between 2.0 V to 6.5 V (A, B, and C type)
▲Selectable in 0.1 V steps between 1.5 V to 6.5 V (D type)
■Output voltage accuracy : ±2.4%
■Shutdown function (A type)
■V-DD / V-OUT separate type (D type)
■External transistor type available (S-8352 Series)
■Lead-free, Sn 100%, halogen-free

Brand of Product：	ABLIC
Part#：	S-8351 、 S-8352 、 S-8351AxxMC 、 S-8351BxxMA 、 S-8351CxxMA 、 S-8351CxxUA 、 S-8351DxxMC 、 S-8352AxxMC 、 S-8352BxxMA 、 S-8352CxxMA 、 S-8352CxxUA 、 S-8352DxxMC 、 S-835xxxxMA-xxxT2G 、 S-835xxxxxx-xxxT2x 、 S-8352A25MC-K2KT2x 、 S-8352A30MC-K2PT2x 、 S-8352A32MC-K2RT2x 、 S-8352A33MC-K2ST2x 、 S-8352A35MC-K2UT2x 、 S-8352A37MC-K2WT2x 、 S-8352A40MC-K2ZT2x 、 S-8352A46MC-K3FT2x 、 S-8352A47MC-K3GT2x 、 S-8352A50MC-K3JT2x 、 S-8352A54MC-K3NT2x 、 S-8352B30MA-K4PT2G 、 S-8352B50MA-K5JT2G 、 S-8352C50UA-K7JT2x 、 S-8352C56UA-K7PT2x 、 S-8352C33UA-K6ST2x 、 S-8352C32UA-K6RT2x 、 S-8352C31UA-K6QT2x 、 S-8352C30UA-K6PT2x 、 S-8352D20MC-K8FT2x 、 S-8352D30MC-K8PT2x 、 S-8352D33MC-K8ST2x More Part#
Product Category：	SWITCHING REGULATOR 、 SWITCHING REGULATOR CONTROLLER More
Application：	[ portable equipment ][ digital cameras ][ electronic notebooks ][ PDAs ][ audio equipment ][ portable CD players ][ MD players ][ cameras ][ video equipment ][ communications equipment ][ microcomputers ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	SOT-23-3;SOT-23-5;SOT-89-3
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2018.06
Version Number：	Rev.3.1_00
Data Encoding：
Data Size：	1.8 MB

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