LX1691(2004) Просмотр технического описания (PDF) - Microsemi Corporation
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LX1691 Datasheet PDF : 15 Pages
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LX1691
TM
®
Enhanced Multi-Mode CCFL Controller
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameter
Symbol
Test Conditions
` DIGITAL DIMMER BLOCK
Conventional Dimming
Duty Cycle
Minimum Duty Cycle; BRITE_IN = 0.1V
Maximum Duty Cycle; BRITE_IN =1.90V
Maximum Duty Cycle; BRITE_IN ≥ 2.05V
Reverse Dimming
Duty Cycle
` TIMING GENERATOR BLOCK
Number of Lamp Return Current
Cycles before Run Mode
I_SNS Run Mode Checking Interval
Maximum Duty Cycle; BRITE_IN = 0.0V
Maximum Duty Cycle; BRITE_IN = 0.1V
Minimum Duty Cycle; BRITE_IN = 1.95V
NIGNITE
To switch to Run Mode
Lamp return current cycles
Strike Validation Threshold
To switch to run mode, TA =25°C
Fault Comparator Threshold Run
Number of Strike sweep Attempts
Before Fault Shutdown
I_ SNS Open Lamp Fault Detect, TA =25°C
NSTRK_FAULT FLAMP Sweep Cycles, I_SNS = 0V_SNS = 0V
Power On Delay Before Strike
TD_PWRON
Number of Sweeping Strike Frequency
Steps per Attempt
Number of Output Pulses per Striking
Step
` LAMP FEEDBACK CONDITIONING BLOCK
I_R = 80.6K
I_SNS Input Current
I_SNS = +2.5V
I_SNSIIN
I_SNS = -2.5V
OV_SNS Input High Threshold
OV_SNS Input Low Threshold
OV_SNS Input Current
OC_SNS Input High Threshold
OC_SNS Input Low Threshold
OC_SNS Input Current
Full Wave Rectifiers RMS Transfer
VTH_OV_SNS Active Over Voltage Protection
VTL_OV_SNS Inactive Over Voltage Protection
OV_SNS = +2.5V
OV_SNSIIN
OV_SNS = -2.5V
VTH_OC_SNS Active Over Current Protection
VTL_OC_SNS Inactive Over Voltage Protection
OC_SNS = 10V
OC_SNSIIN
OC_SNS = -2.5V
I_SNS = 0.3VDC, TA = 25°C
I_SNS = 2.5VDC, TA = 25°C
I_SNSRMS
I_SNS = -0.3VDC, TA = 25°C
I_SNS = -2.5VDC, TA = 25°C
LX1691
Units
Min Typ Max
2
5
7
%
90
95
100
%
100
%
100
%
90
95
100
%
2
5
7
%
4
2048
700
300
6
125
512
16
Cycles
Cycles
mVPK
mVPK
ms
Steps
Cycles
14
µA
-40
µA
± 2.2
VPK
± 1.8
VPK
140
µA
-170
µA
± 2.2
VPK
± 1.8
VPK
14
µA
-40
µA
0.3
V
2.5
V
0.3
V
2.5
V
Copyright © 2003
Rev. 1.0, 7/16/2004
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 7
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