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SANKEN ELECTRIC CO., LTD.

LC5540LD-DS

Single-Stage Power Factor Corrected

Off-Line Switching Regulator ICs

LC5540LD Series

January 28, 2013

Selection Guide

Part

Number

MOSFET

(V)

(max)

(Ω)

PWM Operation

(kHz)

On-Time

(μs)

(W)

230 VAC

85 to 265

VAC

LC5545LD

650

3.95

72

9.3

13

10

LC5546LD

1.9

60

11.2

20

16

LC5548LD

800

3.5

72

9.3

13

10

*Based on the thermal rating; the allowable maximum output power can be up to 120% to 140% of

this value. However, maximum output power may be limited in such an application with low output

voltage or short duty cycle.

Characteristic

Symbol

Notes

Pins

Rating

Unit

LC5545LD

Single pulse

8 – 1

2.5

A

LC5546LD

4.0

A

LC5548LD

2.6

A

8 – 1

47

mJ

86

mJ

56

mJ

Control Part Input Voltage

2 – 1

35

V

OCP Pin Voltage

3 – 1

−2.0 to 5.0

V

FB Pin Voltage

4 – 1

−0.3 to 7.0

V

OVP Pin Voltage

6 – 1

−0.3 to 5.0

V

Allowable Power Dissipation of

Mounted on a 15 mm × 15 mm PCB

8 – 1

0.97

W

Operating Ambient Temperature

―−55 to 125

°C

Storage Temperature

―−55 to 125

°C

Channel Temperature

―

150

°C

1

Refer to MOSFET Safe Operating Area Curve.

2

Refer to MOSFET Avalanche Energy Derating Coefficient Curve.

3

Refer to MOSFET Temperature versus Power Dissipation Curve.

The polarity value for current specifies a sink as "+," and a source as “−,” referencing the IC.