S8540 datasheet(3/36 Pages) SII

Part #	S8540

Description	STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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Manufacturer	SII [Seiko Instruments Inc]

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STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.4.0_01

S-8540/8541 Series

3



Product Name Structure

The control types, product types, and output voltage for the S-8540/8541 series can be selected at the

user’s request.

Please refer to the “1.

Product name” for the definition of the product name, “2.

Package” regarding the package drawings and “3. Product name list” for the full product names.

1.

Product name

S-854x x x FN - xxx T2 x

Product name (abbreviation)

*2

Package name (abbreviation)

FN: 8-Pin MSOP

Output voltage

*3

15 to 60

(e.g. When the output voltage is 1.5 V, it is expressed as 15.)

Product type

A: Fixed output voltage, fosc = 600 kHz

B: Feed back type, fosc = 600kHz

C: Fixed output voltage, fosc = 300 kHz

D: Feed back type, fosc = 300 kHz

Control system

0: PWM control

1: PWM/PFM switching control

Environmental code

S: Lead-free, halogen-free

G: Lead-free (for details, please contact our sales office)

IC direction in tape specifications

*1

*1. Refer to the taping specifications at the end of this book.

*2. Refer to the “3. Product name list”.

*3. 00: Feed back type

2.

Package

Package Name

Drawing Code

Package

Tape

Reel

8-Pin MSOP

FN008-A-P-SD

FN008-A-C-SD

FN008-A-R-SD

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