lx1689 Microsemi Corporation, lx1689 Datasheet - Page 7

• Manufacturer Part Number: lx1689
• Description: Third Generation Ccfl Controller
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev. 1.1, 2006-02-27
ANALOG DIMMER BLOCK
BRITE_IN Input Current
DIGITAL DIMMER BLOCK
TIMING GENERATOR BLOCK
Number of Lamp Return Current
Cycles before Run Mode
I_SNS Run Mode Checking Interval
Fault Comparator Threshold Voltage
Number of Strike sweep Attempts
Before Fault Shutdown
Power On Delay Before Strike
Number of Sweeping Strike Frequency
Steps per Attempt
Number of Output Pulses per Striking
Step
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
Conventional Dimming
BRITE_OUT
Reverse Dimming
BRITE_OUT
Conventional Dimming
Reverse Dimming
LAMP FEEDBACK CONDITIONING BLOCK
I_SNS Input Current
Duty Cycle
Duty Cycle
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 )
BRITE_IN
OV_SNS
OC_SNS
N
V
V
V
V
I_SNS
Symbol
T
I_SNS
STRK_FAULT
TH_OC_SNS
TH_OV_SNS
TL_OV_SNS
TL_OC_SNS
N
D_PWRON
IGNITE
RMS
IIN
IIN
IIN
II
BRITE_IN = 0 to 5V
BRITE_IN < 0.45V
BRITE_IN > 2.05V; T
BRITE_IN > 2.05V
BRITE_IN < 0.45V; T
BRITE_ IN < 0.45V
BRITE_IN > 2.05V
Minimum Duty Cycle; BRITE_IN ≤ 0.55V
Maximum Duty Cycle; BRITE_IN =1.90V
Maximum Duty Cycle; BRITE_IN ≥ 1.95V
Maximum Duty Cycle; BRITE_IN ≤ 0.55V
Maximum Duty Cycle; BRITE_IN = 0.6V
Minimum Duty Cycle; BRITE_IN ≥ 1.95V
To switch to Run Mode
Lamp return current cycles, 8192 x 1 /f
I_ SNS Open Lamp Fault Detect, T
FLAMP Sweep Cycles, I_SNS = 0V_SNS = 0V
16384 X Lamp Run Period
I_SNS =10V
I_SNS = -10V
Active Over Voltage Protection
Inactive Over Voltage Protection
OV_SNS = 10V
OV_SNS = -10V
Active Over Current Protection
Inactive Over Voltage Protection
OC_SNS = 10V
OC_SNS = -10V
I_SNS = 0.3VDC, T
I_SNS = 2.0VDC, T
I_SNS = -0.3VDC, T
I_SNS = -2.0VDC, T
Integrated Products
®
Microsemi
Test Conditions
A
A
A
A
= 25°C
= 25°C
A
A
Third Generation CCFL Controller
= 25°C
= 25°C
= 25°C
= 25°C
P
RODUCTION
A
=25°C
O
D
ATA
± 1.8
± 1.8
Min
0.96
0.94
0.98
0.96
0.27
1.95
0.24
1.75
100
100
250
20
10
85
85
-1
2
2
S
HEET
LX1689
1024
Typ
-200
-320
-110
1.04
1.04
1.06
1.06
0.31
126
305
252
260
± 2
± 2
± 2
± 2
0.3
1.9
52
62
10
92
92
10
15
16
80
45
8
2
Max
± 2.2
± 2.2
-350
-450
-180
1.12
1.14
1.14
1.16
0.35
2.05
0.36
2.05
100
120
100
100
350
150
400
15
15
80
1
LX1689
Units
Cycles
Cycles
Steps
mV
mV
mV
mS
V
V
V
V
ms
µA
µA
µA
µA
µA
µA
µA
%
%
%
%
%
%
V
V
V
V
V
V
V
V
PK
PK
PK
PK
Page 7
PK