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S-8550

Seiko Instruments
Part Number S-8550
Manufacturer Seiko Instruments
Description (S-8550 / S-8551) PWM CONTROL SWITCHING REGULATORS
Published Aug 28, 2009
Detailed Description Rev.2.1_01 com STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS S-...
Datasheet PDF File S-8550 PDF File

S-8550
S-8550

Overview
Rev.
2.
1_01 com STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING 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 eas...


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