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S-8541 - (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

This page provides the datasheet information for the S-8541, a member of the S-8540 (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER family.

Description

GND pin Connection pin for external transistor IC power supply pin Bypass capacitor connection pin for CVREF reference voltage source Shutdown pin Soft-start capacitor connection pin ON/ OFF Normal operation (step-down operation) All circuit halts (no step-down operation) None co

Features

  • s.
  • Oscillation frequency.
  • Output voltage.
  • Output voltage precision.
  • Feed back type for output voltage (FB).
  • External components:.
  • Built-in PWM/PFM switchover control circuit (S-8541 series).
  • Current limit circuit.
  • Soft-start.
  • Shutdown function.
  • Small package.
  • Lead-free products 600 kHz (A, B types) 300 kHz (C, D types) 1.5 to 6.0 V, selectable in 0.1V steps (A, C types) ±2.0% a transistor, a coil,.

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Datasheet preview – S-8541

Datasheet Details

Part number S-8541
Manufacturer Seiko Instruments
File Size 505.06 KB
Description (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Datasheet download datasheet S-8541 Datasheet
Additional preview pages of the S-8541 datasheet.

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Full PDF Text Transcription

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Rev.3.2_00 www.DataSheet4U.com STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8540/8541 Series The S-8540/8541 Series is a family of CMOS stepdown switching regulator controllers with PWM control (S-8540 Series) and PWM/PFM switchover control (S8541 Series). These devices consist of a reference voltage source, oscillation circuit, an error amplifier, phase compensation circuit, PWM control circuit, current limit circuit. A high efficiency and large current switching regulator is realized with the help of small external components due to the high oscillation frequency, 300 kHz and 600 kHz.
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