LC552XD datasheet(3/9 Pages) SANKEN

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SANKEN ELECTRIC CO., LTD.

LC5523D-DS

Single-Stage Power Factor Corrected

Off-Line Switching Regulator IC

LC5523D

November 26, 2012

ELECTRICAL CHARACTERISTICS of Control Part TA = 25°C, VCC = 20 V, unless otherwise specified

Characteristics

Symbol

Test Conditions

Pins

Min.

Typ.

Max.

Unit

Startup Operation

Operation Start Voltage

VCC(ON)

2 – 1

13.8

15.1

17.3

Operation Stop Voltage*

VCC(OFF)

2 – 1

8.4

9.4

10.7

Operating Current

ICC(ON)

2 – 1

–

3.7

Startup Circuit Operation Voltage

VSTARTUP

8 – 1

Startup Current

ICC(STARTUP) VCC= 13 V

2 – 1

−5.5

−3.0

−1.0

Startup Current Threshold Biasing

Voltage-1*

VCC(BIAS)1

2 – 1

9.5

11.0

12.5

Startup Current Threshold Biasing

Voltage-2

VCC(BIAS)2

2 – 1

14.4

16.6

18.8

Normal Operation

PWM Operation Frequency

fOSC

8 – 1

11.0

14.0

18.0

kHz

Maximum On-Time

tON(MAX)

8 – 1

30.0

40.0

50.0

μs

FB Pin Voltage Minimum Limit

VFB(MIN)

4 – 1

0.55

0.90

1.25

Maximum Feedback Current

IFB(MAX)

4 – 1

−40

−25

−10

μA

Leading Edge Blanking Time

tON(LEB)

3 – 1

−

500

−

Quasi-Resonant Operation Threshold

Voltage-1

VBD(TH1)

3 – 1

0.14

0.24

0.34

Quasi-Resonant Operation Threshold

Voltage-2

VBD(TH2)

3 – 1

0.12

0.17

0.22

Protection Operation

OCP Pin Overcurrent Protection

(OCP) Threshold Voltage

VOCP

3 – 1

−0.66

−0.60

−0.54

OCP Pin Source Current

IOCP

3 – 1

−120

−40

−10

μA

OCP Pin Overvoltage Protection

(OVP) Threshold Voltage

VBD(OVP)

3 – 1

2.2

2.6

3.0

Overload Protection (OLP) Threshold

Voltage-1

VFB(OLP)1

4 – 1

5.0

5.5

6.0

Overload Protection (OLP) Threshold

Voltage-2

VFB(OLP)2

4 – 1

4.1

4.5

4.9

OVP Pin OVP Threshold Voltage

VOVP(OVP)

6 – 1

1.6

2.0

2.4

VCC Pin OVP Threshold Voltage

VCC(OVP)

2 – 1

28.5

31.5

34.0

Thermal Shutdown Activating

Temperature

TJ(TSD)

–

135

–

°C

VCC(BIAS)1 > VCC(OFF) always.

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