LC5540LD 데이터 시트보기 (PDF) - Sanken Electric co.,ltd.

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LC5540LD

Single-Stage Power Factor Corrected Off-Line Switching Regulators

Sanken Electric co.,ltd. 

LC5540LD

Series

Single-Stage Power Factor Corrected

Off-Line Switching Regulators

Functional Block Diagram

OVP ⑥

OCP ③

NF ⑤

VCC

②

OVP

TSD

UVLO

Control Part

START UP

Reg

Drv

Bias

S

RQ

Bottom

Detection

OCP LEB

Reg

OSC

OLP

Feedback

Control

⑧ D/ST

① S/GND

④ FB

Pin-out Diagram

S/GND 1

VCC 2

OCP 3

FB 4

8 D/ST

6 OVP

5 NF

Pin List Table

Number Name

1

S/GND

2

VCC

3

OCP

4

FB

5

NF

6

OVP

7

–

8

D/ST

Function

MOSFET source and GND pin for the Control Part

Supply voltage input and Overvoltage Protection (OVP) signal input

Overcurrent Protection (OCP), quasi-resonant signal input, and

Overvoltage Protection (OVP) signal input

Feedback phase-compensation input and Overload Protection

(OLP) signal input

No function; must be externally connected to S/GND pin with as

short a trace as possible, for stable operation of the IC

Overvoltage Protection (OVP) signal input

Pin removed

MOSFET drain pin and input of the startup current

LC5540LD-DS

8

SANKEN ELECTRIC CO., LTD.

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