LX1691(2004) 查看數據表（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
` RAMP GENERATOR
Max Strike / Run Frequency Ratio
FRAMP_STK Ratio to run frequency, I_SNS = OV_SNS = 0V
Maximum Lamp Run Frequency
FRAMP_RUNMAX Lamp is ignited; I_R = 20K
Lamp Run Frequency
FLAMP_RUN Lamp is ignited, I_R = 80.6K, TA = 25°C
Lamp Run Frequency
FLAMP_RUN Lamp is ignited, I_R = 80.6K
Lamp Run Frequency Regulation over
VDDP
Internal Digital Dimming
Burst Frequency
` PWM BLOCK
FLAMP_REG
FBURST
3.3 < VDDP < 5.5V
DIM_MODE = 0V, FLAMP_RUN / 512, I_R = 80.6K
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
GM_EAMP
IS_EAMP
ISK_EAMP
VH_EAMP
VL_EAMP
VOS_EAMP
DCMAX
RVV
RPV
BRITE_OUT – EA_IN = 50mV
EA_IN – BRITE_OUT = 50mV
Pull-up Resistance
Input High Threshold
Input Low Threshold
Input High Current
Input Low Current
` DIM_MODE INPUT
VTH_DD_CLK
VTL_DD_CLK
IIH_DD_CLK
IIL_DD_CLK
To VDDA
Conventional Dimming
Reverse Dimming
DD_CLK = 5V; VDDP=5V
DD_CLK = 0V; VDDP=5V
Low State
Floating State
High State
Input High Current
Input Low Current
` ANALOG DIMMER BLOCK
BRITE_IN Input Current
Conventional Dimming
BRITE_OUT
VTL_TRI_
VTF_TRI
VTH_TRI
IIH_TRI
IIL_TRI
DIM_MODE = 5V
DIM_MODE = 0V
BRITE_IN II BRITE_IN = 0 to 5V
BRITE_IN = 0V
BRITE_IN > 2.05V
BRITE_ IN < 0V
BRITE_IN > 2.05V
LX1691
Units
Min Typ Max
3
250 262
KHz
63
65
67
KHz
61
65
69
KHz
0.1
%
127
Hz
60
150
µmho
100
µA
100
µA
2.5
2.9
V
0.015 0.5
V
30
mV
47
%
100
mV
2.1
V
50
KΩ
1.6
2.0
V
0.4
0.9
V
45
70
µA
-65 -100 µA
0.4 0.85
V
1.2 1.35 1.8
V
2.35 2.8
V
70
120
µA
-25
-50
µA
-1
1
µA
0
25
60
mV
1.9
2.0 2.10
V
1.9
2.0
2.1
V
0
25
60
mV
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 6
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