lx1692 Microsemi Corporation, lx1692 Datasheet - Page 6

• Manufacturer Part Number: lx1692
• Description: Ccfl Backlight Controller Ic
• Manufacturer: Microsemi Corporation

Copyright © 2004
Rev. 1.2, 12/20/2006
Unless otherwise specified, the following specifications apply over the operating ambient temperature -20°C
otherwise noted and the following test conditions:.
BIAS BLOCK
Voltage at Pin I_R
Pin I_R Max Source Current
STRIKING BLOCK
ISNS Input Strike Threshold
Min ISNS Input Threshold
Lamp current Regulation Reference
Voltage During Strike Period
Number of Zero Crossing Signal
Delay Steps During Strike
Number of Pulses Zero Crossing
Signal per Step During Strike
Initial Delay Time
Last Delay Time
OVSNS Zero Comparator HIGH
OVSNS zero Comparator LOW
OVSNS Peak Comparator High
OVSNS Peak Comparator Low
PROTECTION
Open Lamp Detection Enable
Threshold
Over Voltage Detection Threshold
Over Current Detection Threshold
Open Lamp Striking Time Out
Open Lamp Time Out ( After Ignition)
Short Lamp/Over Current Detection
Enable Threshold
Over Current Time Out
Short Lamp Time Out (Strike)
Short Lamp Time Out (Run)
Over Voltage Time Out
TM
Parameter
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
E L E C T R I C A L C H A R A C T E R I S T I C S ( C O N T I N U E D )
VISNS_STK
VISNSMIN
Symbol
V
T
V
T
I
V
N
V
V
V
V
T
REF_STK
T
T
V
MAX_IR
V
SL_RUN
T
SL_STK
V
N
T
OVSTH
T
DCOD
OVZH
OVPH
OCTH
STKO
STEP
FDLY
LDLY
OVZL
OVPL
FEN
OSL
_IR
OL
OC
PS
Integrated Products Division
I_R = 40K
After 128 steps
4.5V > VDDP < 5.5V, ISNS = 0V, , C_TO = 1µF,
I_R = 40K, VC_TO > 3.5V
VISNS < 0.3V, VC_TO >3.5V,
Lamp Freq = 60Khz
4.5V > VDDP < 5.5V, ISNS = 0V, C_TO = 1µF,
I_R = 40K
VOC_SNS >2.0V, Lamp Freq = 60Khz
VOV_SNS < 0.5V, VISNS < 1V
VOV_SNS < 0.5V, VISNS > 0.3V
VOV_SNS > 3.2V, pulsed input
®
Microsemi
Test Conditions
Full Bridge Resonant CCFL Controller
P
RODUCTION
D
Min
0.27
0.63
ATA
0.9
1.8
3.0
1.8
1.2
≤
S
LX1692
HEET
T
-0.443
0.843
-1.73
A
Typ
2.13
128
500
135
500
1.0
1.0
0.3
3.6
0.3
3.5
3.2
2.0
1.4
2.1
0.7
75
16
2
8
≤
70°C except where
Max
0.33
0.77
1.1
2.2
3.4
2.2
1.6
LX1692
Pulses
Units
Steps
count
msec
msec
µsec
µsec
Vpk
Vpk
sec
µA
µs
us
V
V
V
V
V
V
V
V
V
V
Page 6