MP4653—REAL LIPS CC/CV MODE LLC TV LED DRIVER

MP4653 Rev 1.01

www.MonolithicPower.com

5

6/28/2012

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© 2012 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

(continued)

Parameter

Symbol

Condition

Min

Typ

Max

Units

LED short threshold for slow

action

270

300

330

mV

Delay time for slow action

100

200

350

μs

Internal Current Loop Compensation Transconductance Opamp (ICOMP)

Gain Bandwidth product

GB_I

75pF on ICOMP

1.0

[6]

MHz

Open Loop DC Gain

ICOMP open

60

[6]

dB

Input Common-mode range

-0.3

[6]

4

[6]

V

Transconductance

Gm_I

830

μA/V

Saturated output current

35

50

65

μA

Low level clamp voltage

VICOMP_L

Normal operation

0.95

1

1.05

V

High level clamp votlage

VICOMP_H

Normal operation

2.15

2.2

2.25

V

DC Bus Voltage Feedback (VFB)

Sampling Delay Time

PWM falling edge

100

[6]

ns

Minimum clamp voltage

1.1

1.2

1.3

V

Maximum clamp voltage

1.9

2

2.1

V

Internal Voltage Loop Compensation Transconductance Opamp (VCOMP)

Gain Bandwidth product

GB_V

75pF on VCOMP

1.0

[6]

MHz

Open Loop DC Gain

VCOMP open

60

[6]

dB

Low level clamp voltage

VVCOMP_L

Normal operation

0.95

1

1.05

V

High level clamp votlage

VVCOMP_H

Normal operation

2.15

2.2

2.25

V

Transconductance

Gm_V

160

μA/V

Saturated output current

35

50

65

μA

Over LED Voltage Protection (VLED1~VLED4)

Over LED Voltage Protection

Threshold

2.25

2.40

2.55

V

Over LED voltage delay time

1.7

2.3

2.9

μs

Gain of differential voltage

14.7

16.3

17.9

Internal resistance

19

23

27

kΩ

Hiccup mode fault delay timer(ICOMP, VCOMP)

ICOMP Valley Threshold

0.35

0.45

0.55

V

ICOMP Peak Threshold

2.7

3

3.3

V

ICOMP charging current at hiccup

mode

1.6

2

2.4

µA

ICOMP discharging current at

hiccup mode

P)

1.6

2

2.4

µA

VCOMP Valley Threshold

0.35

0.45

0.55

V