S-8551 - (S-8550 / S-8551) PWM CONTROL SWITCHING REGULATORS
Seiko Instruments
Download the S-8551 datasheet PDF.
This datasheet also covers the S-8550 variant, as both devices belong to the same (s-8550 / s-8551) pwm control switching regulators family and are provided as variant models within a single manufacturer datasheet.
General Description
Pin No.
Pin No.
Key Features
s.
Oscillation frequency : 1.2 MHz.
Input voltage range : 2.0 to 5.5 V.
Output voltage range : Arbitrarily settable by external output voltage setting resistor.
Output current : 600 mA.
Reference voltage : 0.6 V ±2.0%.
Efficiency : 92%.
Soft-start function : 1 ms typ.
Shutdown function : Shutdown current consumption : 1.0 µA max.
Full PDF Text Transcription for S-8551 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
S-8551. For precise diagrams, and layout, please refer to the original PDF.
Rev.2.1_01 www.DataSheet4U.com STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS S-8550/8551 Series The S-8550/8551 Series is a CMOS sy...
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HING REGULATORS S-8550/8551 Series The S-8550/8551 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 conventional st
S-8551 Datasheet
