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LX1691 Datasheet

  • LX1691

  • Microsemi Corporation [Enhanced Multi-Mode CCFL Controller]

  • MICROSEMI

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LX1691
TM
廬
Enhanced Multi-Mode CCFL Controller
P
RODUCTION
D
ATA
S
HEET
]
ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameter
RAMP GENERATOR
Max Strike / Run Frequency Ratio
Maximum Lamp Run Frequency
Lamp Run Frequency
Lamp Run Frequency
Lamp Run Frequency Regulation over
V
DDP
Internal Digital Dimming
Burst Frequency
PWM BLOCK
Error Amp Transconductance
Error Amp Output Source Current
Error Amp Output Sink Current
Error Amp Output High Voltage
Error Amp Output Low Voltage
Error Amp Input Offset Voltage
Max Duty Cycle
Ramp Valley Voltage
Ramp Peak Voltage
DD_CLK INPUT
Pull-up Resistance
Input High Threshold
Input Low Threshold
Input High Current
Input Low Current
DIM_MODE INPUT
Low State
Floating State
High State
Input High Current
Input Low Current
ANALOG DIMMER BLOCK
BRITE_IN Input Current
Conventional Dimming
BRITE_OUT
BRITE_IN
II
BRITE_IN = 0 to 5V
BRITE_IN = 0V
BRITE_IN > 2.05V
BRITE_ IN < 0V
BRITE_IN > 2.05V
-1
0
1.9
1.9
0
25
2.0
2.0
25
1
60
2.10
2.1
60
碌A(chǔ)
mV
V
V
mV
V
TL_TRI_
V
TF_TRI
V
TH_TRI
I
IH_TRI
I
IL_TRI
DIM_MODE = 5V
DIM_MODE = 0V
0.4
1.2
0.85
1.35
2.35
70
-25
1.8
2.8
120
-50
V
V
V
碌A(chǔ)
碌A(chǔ)
V
TH_DD_CLK
V
TL_DD_CLK
I
IH_DD_CLK
I
IL_DD_CLK
To V
DDA
Conventional Dimming
Reverse Dimming
DD_CLK = 5V; VDDP=5V
DD_CLK = 0V; VDDP=5V
0.4
50
1.6
0.9
45
-65
70
-100
2.0
K鈩?/div>
V
V
碌A(chǔ)
碌A(chǔ)
F
RAMP_STK
F
LAMP_RUN
F
LAMP_RUN
F
LAMP_REG
F
BURST
Ratio to run frequency, I_SNS = OV_SNS = 0V
250
63
61
Lamp is ignited, I_R = 80.6K, T
A
= 25擄C
Lamp is ignited, I_R = 80.6K
3.3 < V
DDP
< 5.5V
DIM_MODE = 0V, F
LAMP_RUN
/ 512, I_R = 80.6K
3
262
65
65
0.1
127
67
69
KHz
KHz
KHz
%
Hz
F
RAMP_RUNMAX
Lamp is ignited; I_R = 20K
WWW .
Microsemi
.C
OM
Symbol
Test Conditions
Min
LX1691
Typ
Max
Units
G
M_EAMP
I
S_EAMP
I
SK_EAMP
V
H_EAMP
V
L_EAMP
V
OS_EAMP
DC
MAX
R
VV
R
PV
BRITE_OUT 鈥?EA_IN = 50mV
EA_IN 鈥?BRITE_OUT = 50mV
60
150
100
100
碌mho
碌A(chǔ)
碌A(chǔ)
V
0.5
30
V
mV
%
mV
V
2.5
2.9
0.015
47
100
2.1
E
LECTRICALS
E
LECTRICALS
Copyright
漏
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 6

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