S-8541 - (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Seiko Instruments
Download the S-8541 datasheet PDF.
This datasheet also covers the S-8540 variant, as both devices belong to the same (s-8540 / s-8541) 600 khz pwm control or pwm/pfm switchable switching regulator controller family and are provided as variant models within a single manufacturer datasheet.
General 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
Key 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,.
Full PDF Text Transcription for S-8541 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
S-8541. For precise diagrams, and layout, please refer to the original PDF.
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 o...
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TOR 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.
S-8541 Datasheet
