Full PDF Text Transcription for S-8550 (Reference)
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S-8550. For precise diagrams, and layout, please refer to the original PDF.
ATION, PWM CONTROL SWITCHING REGULATORS Rev.5.0_02 The S-8550 Series is a CMOS synchronous rectification step-down switching regulator which mainly consists of a reference voltage circuit, an oscillator, an error amplifier, a phase compensation circuit, a PWM controller, an under voltage lockout circuit (UVLO), a current limit circuit, and a power MOS FET. The oscillation frequency is high at 1.2 MHz, so a high efficiency, large output current, step-down switching regulator can be achieved by using small external parts. The built-in synchronous rectification circuit makes achieving high efficiency easier compared with conv