LX1691A 데이터 시트보기 (PDF) - Microsemi Corporation

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LX1691A

Enhanced Multi-Mode CCFL Controller

Microsemi Corporation 

LX1691A

TM

®

Enhanced Multi-Mode CCFL Controller

PRODUCTION DATA SHEET

ELECTRICAL CHARACTERISTICS (CONTINUED)

]

Parameter

Symbol

Test Conditions

` RAMP GENERATOR

Max Strike / Run Frequency Ratio

FRAMP_STK Ratio to run frequency

Maximum Lamp Run Frequency

FRAMP_RUNMAX Lamp is ignited; I_R = 20K

Lamp Run Frequency

FLAMP_RUN Lamp is ignited, I_R = 80.6K, TA = 25°C

Lamp Run Frequency

FLAMP_RUN Lamp is ignited, I_R = 80.6K

Lamp Run Frequency Regulation over

VDDP

Internal Digital Dimming

Burst Frequency

` PWM BLOCK

FLAMP_REG

FBURST

3.3 < VDDP < 5.5V

DIM_MODE = 0V, FLAMP_RUN / 512, I_R = 80.6K

Error Amp Transconductance

Error Amp Output Source Current

Error Amp Output Sink Current

Error Amp Output High Voltage

Error Amp Output Low Voltage

Error Amp Input Offset Voltage

Max Duty Cycle

Ramp Valley Voltage

Ramp Peak Voltage

Error Amp Output clamp threshold

Error Amp Output Clamp threshold

` DD_CLK INPUT

GM_EAMP

IS_EAMP

ISK_EAMP

VH_EAMP

VL_EAMP

VOS_EAMP

DCMAX

RVV

RPV

VEAOUT1

VEAOUT2

BRITE_OUT – EA_IN = 50mV

EA_IN – BRITE_OUT = 50mV

VINSNS = 1.2V Through 68K

VINSNS = 2.3V Through 68K

Pull-up Resistance

Input High Threshold

Input Low Threshold

Input High Current

Input Low Current

` DIM_MODE INPUT

VTH_DD_CLK

VTL_DD_CLK

IIH_DD_CLK

IIL_DD_CLK

To VDDA

Conventional Dimming

Reverse Dimming

DD_CLK = 5V; VDDP=5V

DD_CLK = 0V; VDDP=5V

Low State

Floating State

High State

Input High Current

Input Low Current

` ANALOG DIMMER BLOCK

VTL_TRI_

VTF_TRI

VTH_TRI

IIH_TRI

IIL_TRI

DIM_MODE = 5V

DIM_MODE = 0V

BRITE_IN Input Current

BRITE_IN II BRITE_IN = 0 to 5V

BRITE_IN = 0V

Conventional Dimming

BRITE_OUT

BRITE_IN > 2.05V

BRITE_ IN < 0V

BRITE_IN > 2.05V

LX1691A

Units

Min Typ Max

3

250 262

KHz

63

65

67

KHz

61

65

69

KHz

0.1

%

127

Hz

60

150

µmho

100

µA

100

µA

2.5

2.9

V

0.015 0.5

V

30

mV

47

%

100

mV

2.1

V

1.68

V

1.26

V

50

KΩ

1.6

2.0

V

0.4

0.9

V

45

70

µA

-65 -100 µA

0.4 0.85

V

1.2 1.35 1.8

V

2.35 2.8

V

70

120

µA

-25

-50

µA

-1

1

µA

0

25

60

mV

1.95 2.0 2.10

V

1.9

2.0

2.1

V

0

25

60

mV

Copyright © 2003

Rev. 1.0, 8/31/2004

Microsemi

Integrated Products

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 6

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