LC5540LF 查看數據表（PDF） - Sanken Electric co.,ltd.

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LC5540LF

Single-Stage Power Factor Corrected Off-Line Switching Regulators

Sanken Electric co.,ltd. 

LC5540LF

Series

Single-Stage Power Factor Corrected

Off-Line Switching Regulators

Functional Block Diagram

OVP ⑥7

OCP ④

NC ⑥

VCC

③

OVP

TSD

UVLO

Contol Part

START UP

Reg

Drv

Bias

S

RQ

Bottom

Detection

OCP LEB

Reg

OSC

OLP

Feedback

Control

① D/ST

② S/GND

⑤FB

LC554xF Series Terminal List Table

Number Name

Function

1

D/ST MOSFET drain terminal and input of the startup current

2

S/GND MOSFET source and GND terminal for the Control Part

3

VCC Supply voltage input and Overvoltage protection (OVP) signal input

4

OCP

Overcurrent Protection, quasi-resonant signal input terminal, and

Overvoltage Protection (OVP) signal input

5

FB

Feedback signal input and Overload Protection (OLP) signal input

6

NC No connection

7

OVP Overvoltage Protection (OVP) signal input

Pin-out Diagrams

D/ST

1

S/GND

VCC

OCP

FB

NC

OVP

2

3

4

5

6

7

(LF 3051)

D/ST

1

S/GND

VCC

OCP

FB

NC

OVP

2

3

4

5

6

7

(LF 3052)

1

D/ST

2

S/GND

3

VCC

(LF 3054)

4

OCP

5

FB

6

NC

7

OVP

LC5540LF-DS

8

SANKEN ELECTRIC CO., LTD.

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