LX1692

Microsemi

Integrated Products Division

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

Page 7

Copyright

© 2004

Rev. 1.2, 12/20/2006

Full Bridge Resonant CCFL Controller

TM

®

ELEC TR ICAL CHA RACTER ISTIC S (C ONTINU E D)

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

°C

otherwise noted and the following test conditions:.

LX1692

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

PWM BLOCK

ISNS Input Voltage Range

Maximum recommended for linear operation of

error amplifier

-4

+4

Vpk

OC_SNS Input Voltage Range

-4

+4.0

Vpk

OV_SNS Input Voltage Range

-4

+4.0

Vpk

VIN_SNS Input Voltage Range

-0.3

VDDP

Vpk

ICOMP Error Amp

Transconductance

ISNS =1.5V

100

220

410

µmho

ICOMP Output Source Current

100

µA

ICOMP Output Sink Current

100

µA

ICOMP Output Voltage Range

0

VDDA

V

ISNS-BRITE_A Input Offset Voltage

ISNS=1.5V, Ta=25

°C

-100

0

100

mV

ICOMP Discharge Current

10

mA

ICOMP to A/B Output Propagation

Delay

1100

ns

VCOMP High voltage

VOVSNS = 0V, See Note 1

VDDA

V

VCOMP Sink Current

VVCOMP = 2V

1.5

mA

OUTPUT BUFFER BLOCK

Output Resistance

VDDP = 5V

30

Ω

Output Resistance

VDDP = 5V

30

Ω

Pull Up Resistance

Cout, Dout

20

K

Ω

Pull Down Resistance

Aout, Bout

20

K

Ω

Output voltage High

VOH

VDDP-0.4

VDDP

V

Output voltage low

VOL

0

0.4

V

Min off time

320

ns

Note 1. External resistor divider is connected to Vcomp pin. 100K between VDDA and Vcomp, 300K between Vcomp to GND.