LX1692 Просмотр технического описания (PDF) - Microsemi Corporation
Номер в каталоге
Компоненты Описание
Список матч
LX1692 Datasheet PDF : 15 Pages
| |||
LX1692
TM
®
Full Bridge Resonant CCFL Controller
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the operating ambient temperature -20°C ≤ TA ≤ 70°C except where
otherwise noted and the following test conditions:.
Parameter
` BIAS BLOCK
Symbol
Test Conditions
LX1692
Units
Min Typ Max
Voltage at Pin I_R
V_IR
I_R = 40K
1.0
V
Pin I_R Max Source Current
` STRIKING BLOCK
IMAX_IR
75
µA
ISNS Input Strike Threshold
VISNS_STK
0.9
1.0
1.1 Vpk
Min ISNS Input Threshold
VISNSMIN
0.27
0.3
0.33 Vpk
Lamp current Regulation Reference
Voltage During Strike Period
VREF_STK
1.8
2
2.2
V
Number of Zero Crossing Signal
Delay Steps During Strike
NSTEP
128
Steps
Number of Pulses Zero Crossing
Signal per Step During Strike
NPS
8
Pulses
Initial Delay Time
TFDLY
3.6
µs
Last Delay Time
TLDLY
After 128 steps
0.3
us
OVSNS Zero Comparator HIGH
VOVZH
0.843
V
OVSNS zero Comparator LOW
VOVZL
-0.443
V
OVSNS Peak Comparator High
VOVPH
2.13
V
OVSNS Peak Comparator Low
` PROTECTION
VOVPL
-1.73
V
Open Lamp Detection Enable
Threshold
VFEN
3.5
V
Over Voltage Detection Threshold
VOVSTH
3.0
3.2
3.4
V
Over Current Detection Threshold
Open Lamp Striking Time Out
VOCTH
1.8
2.0
2.2
V
TSTKO
4.5V > VDDP < 5.5V, ISNS = 0V, , C_TO = 1µF,
I_R = 40K, VC_TO > 3.5V
1.2
1.4
1.6
sec
Open Lamp Time Out ( After Ignition) TOL
VISNS < 0.3V, VC_TO >3.5V,
Lamp Freq = 60Khz
2.1
msec
Short Lamp/Over Current Detection
Enable Threshold
VDCOD
4.5V > VDDP < 5.5V, ISNS = 0V, C_TO = 1µF,
I_R = 40K
0.63
0.7 0.77
V
Over Current Time Out
TOC
VOC_SNS >2.0V, Lamp Freq = 60Khz
500
µsec
Short Lamp Time Out (Strike)
TSL_STK VOV_SNS < 0.5V, VISNS < 1V
135
msec
Short Lamp Time Out (Run)
TSL_RUN VOV_SNS < 0.5V, VISNS > 0.3V
500
µsec
Over Voltage Time Out
TOSL
VOV_SNS > 3.2V, pulsed input
16
count
Copyright © 2004
Rev. 1.2, 12/20/2006
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
Share Link: 