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S-8520 - PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Download the S-8520 datasheet PDF. This datasheet also covers the S-8521 variant, as both devices belong to the same pwm control or pwm / pfm switchable switching regulator controller family and are provided as variant models within a single manufacturer datasheet.

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Note: The manufacturer provides a single datasheet file (S-8521_SeikoInstruments.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number S-8520
Manufacturer Seiko Instruments
File Size 1.01 MB
Description PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Datasheet download datasheet S-8520 Datasheet

Full PDF Text Transcription for S-8520 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for S-8520. For precise diagrams, and layout, please refer to the original PDF.

S-8520/8521 Series www.sii-ic.com STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER © SII Semiconductor Corporation, 1997-2010 Rev.9.0_01 The ...

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CONTROLLER © SII Semiconductor Corporation, 1997-2010 Rev.9.0_01 The S-8520/8521 Series is a CMOS step-down switching regulator-controller with PWM control (S-8520 Series) and PWM / PFM switching control (S-8521 Series). The S-8520/8521 Series has a reference voltage source, an oscillation circuit, an error amplifier, and other components. The S-8520 Series provides low-ripple power, high efficiency, and excellent transient characteristics due to a PWM control circuit capable of varying the duty ratio linearly from 0% up to 100%. The S-8520/8521 Series also has a soft-start circuit that prevents overshoot at startup. The