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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

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Other Datasheets by Seiko Instruments

Part Number Description
S-8521 PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8533 SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8540 (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8541 (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8550 (S-8550 / S-8551) PWM CONTROL SWITCHING REGULATORS

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 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 S-8521 Series works with either PWM control or PFM control.
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