Datasheet Details
Part number:
S-8541, S-8540
Manufacturer:
Seiko Instruments
File Size:
505.06 KB
Description:
(s-8540 / s-8541) 600 khz pwm control or pwm/pfm switchable switching regulator controller.
Note:
This datasheet PDF includes multiple part numbers: S-8541, S-8540.
Please refer to the document for exact specifications by model.
S-8541, S-8540, (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
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
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 curre
S-8541 Features
* 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
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