LX1692IPW datasheet(5/15 Pages) MITSUMI

Part #	LX1692IPW

Description	Full Bridge Resonant CCFL Controller

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Manufacturer	MITSUMI [Mitsumi Electronics, Corp.]

Direct Link	https://www.mitsumi.co.jp/index_e.html

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LX1692

PRODUCTION DATA SHEET

Microsemi

Integrated Products Division

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

Page 5

Copyright

Rev. 1.1, 2/9/2006

Full Bridge Resonant CCFL Controller

TM

®

ELECTRICAL CHA RACTERISTICS

Unless otherwise specified, the following specifications apply over the operating ambient temperature -20

°C

≤ T

A ≤ 70°C except where

otherwise noted and the following test conditions:.

LX1692

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

POWER

Power Supply Input Voltage

VDDP

4.5

5.5

V

Power Supply Output Voltage

VDD_A

VDDP = 4.5V to 5.5V, I Load = 5mADC

3.8

4.0

4.2

V

VDDP Operating Current

IBB

CAOUT = CBOUT = CCOUT = CDOUT =2000pF,

fLAMP = 62.5kHz

10

15

mA

ENABLE INPUT

ENABLE Logic Threshold

VTH_EN

1.6

1.85

2.0

V

ENABLE threshold Hysteresis

VH_EN

500

mV

ENABLE High

VEN_HIGH

2.4

VDDP

V

ENABLE Low

VEN_LOW

0

0.8

V

Sleep Mode Current

IDD_SLEEP

VENABLE = 0V

20

50

µA

Input Resistance

RENR

100

K

Ω

UNDER VOLTAGE LOCKOUT

UVLO Threshold VDDP

VTH_UVLO_P

Rising edge

3.8

4.2

V

UVLO Hysteresis

VH_UVLO

200

mV

BRIGHTNESS CONTROL

BRITE_A Voltage Range

VR_BR_A

0

VDDP

V

Full Brightness BRITE_A Input

VBR_FULL _A

VR_BR_D = VDDA, TA=25°C

1.9

2

2.1

V

Full Darkness BRITE_A Input

VDARK_FULL_A VR_BR_D = VDDA

0

V

Full Darkness BRITE_A input Offset

VDARKFULL_OS VR_BR_D = VDDA, BRITE_A = 0V

0.35

0.45

0.55

V

BRITE_D Voltage Range

VR_BR_D

VR_BR_A = VDDA, TA = 25°C

0.4

VDDP

V

Full Brightness BRITE_D Input

VBR_FULL _D

VR_BR_A = VDDA

2.37

2.5

2.63

V

Full Darkness BRITE_D Input

VDARK_FULL_D VR_BR_A = VDDA

0.43

0.55

0.67

V

BURST RAMP GENERATOR

Ramp Valley Voltage

VRVV

0.43

0.55

0.67

V

Ramp Peak Voltage

VRPV

2.37

2.5

2.63

V

Ramp Frequency

FRamp

C_BST = 10nF, I_R = 40K

230

250

270

Hz

Burst Duty Cycle Range

0

100

%

BRITE_D to DIMPWM Jitter

JBDD

C_BST = 10nF, BRITE_D = 2.4V

1

3

µs

Burst PWM min Duty Resolution

DRBST

1

%

LAMP FREQUENCY GENERATOR

Lamp Frequency Range

FLAMP

30

150

KHz

Max Lamp Strike Frequency

FLAMP_STK

Lamp is not ignited

150

KHz

Lamp Run Ramp Frequency

FLAMP_RUN

Lamp Ignited, Run Mode, TA = 25°C, I_R = 40K,

C_R = 100pF

60.6

62.5

64.4

KHz

Lamp Run Ramp Frequency

Regulation

FLAMP_REG

4.5 > VDDP < 5.5V, TA = 25°C

VDDP = 5.5V

±0.5

±0.1

% / V

%/

°C

Ramp Valley Voltage

VLRVV

0.2

V

Ramp Peak Voltage

VLRPV

2.0

V

Ramp PWM Jitter

LFJ

1

µs

VIN_SNS RAMP

Ramp Peak Clamp Voltage

VRPCV

VIN = 8V, C_P = C_R = 100pF, R_P = TBD,

VDDP = 5V

5

VDDP+0

.9

V

VIN_SNS Discharge Current

IVRVV

7

12.5

18

mA

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