LX1695 Просмотр технического описания (PDF) - Microsemi Corporation
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LX1695 Datasheet PDF : 10 Pages
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LX1695
TM
®
Switched Royer CCFL Inverter Monitor IC
PRODUCTION DATA SHEET
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage (VDD )
BRITE Linear DC Voltage Range
DIM_FREQ, ENABLE, FLT_DLY
Royer Output Frequency Range
LX1695
Min
Typ
4.5
0
0
30
250
Max
5.5
1.95
VDD
600
Units
V
V
V
Hz
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, specifications apply over the range: TA=-40 to 85OC, VDD = 4.5 to 5.5V, RDIM_FREQ =25.2K ohms, Royer = 1000pF
ENABLE = VDD, BRITE_IN = 1.0V, FLT_DLY = 3V
Parameter
Symbol
Test Conditions
` POWER
VVDD Dynamic Current
Output Off Mode Current
Enable Threshold
ENABLE Input High Current
ENABLE Input Low Current
UV Threshold
UV Hysteresis
` ROYER
ROYER Output Sink Current
ROYER Output Source Current
ROYER Output Rise Time
ROYER Output Fall Time
` DIM FREQ
DIM_FREQ Voltage
DIM_FREQ ISC
LOW ROYER Output Frequency
NOMINAL ROYER Output
Frequency
HIGH ROYER Output Frequency
DIM_FREQ IIH
DIM_FREQ IIL
IDD
I_OUT OFF
VIH
VIL_
IIH_ENABLE
IIL_ENABLE
UV TH
VDD=5.5V
VDD=5.5V; Enable ≤ 0.4V
VDD=5V; ENABLE = 5V
VDD=5V; ENABLE = 0V
VDD Rising
ISK_ROYER
ISRC_ROYER
TR
TF
BRITE_IN = 2V ROYER = 0.4V
BRITE_IN = 2V ROYER = VDD-0.5V
COUT = 1000pF
COUT = 1000pF
VDIM_FREQ
ISCDIM_FREQ
FROYER LOW
FROYER NOM
FROYER HIGH
IIHDIM_FREQ
IILDIM_FREQ
DIM_FREQ = 0V; self limiting
RDIM_FREQ = 215K
RDIM_FREQ = 25.2K
RDIM_FREQ = 10K
DIM_FREQ = 3V; No RDIM_FREQ
DIM_FREQ = 0.4V; No RDIM_FREQ
EXT CLK ROYER Output Frequency FROYER EXT_CLK DIM_FREQ = 15KHz to 300KHz Square Wave
` BRITE_IN / DUTY CYCLE CONTROL
BRITE_IN Input High Current
IIH_BRITE_IN VDD=5V; BRITE_IN = 2V
BRITE_IN Input Low Current
IIL_BRITE_IN VDD=5V; BRITE_IN = 0V
Duty Cycle 0
DC0
BRITE_IN = 0V;
Duty Cycle 1
DC1
BRITE_IN = 1V
Duty Cycle 2
DC1
BRITE_IN = 1.95
VDAC Ramp Valley Voltage
VDACRP For reference only
VDAC Ramp Peak Voltage
VDACRV For reference only
` OLSNS / FAULT DELAY THRESHOLD
OLSNS Threshold Voltage
OLSNS Clock Cycle Delay
FLT_DLY Threshold
VTH_OLSNS
OLSNSDY
FLT_DLYTH
Note 1
Note 1 : If duty cycle is set to less than 10% open lamp sensing is internally disabled
LX1695
Units
Min Typ Max
4.0
mA
3.5
mA
2
V
0.8
V
-1
0.01
1
µA
-1
-0.01
1
µA
3.7
4
4.3
V
350
mV
40
75
mA
100
mA
20
100
nS
20
100
nS
1
V
-600
µA
27
30
33
Hz
237
250
263
Hz
555
600
645
Hz
120
µA
-475
µA
DIM_FREQ
Hz
512
-1
0.01
1
µA
-1
-0.01
1
µA
2.5 3.125
5
%
52
%
95
100
%
40
mV
1.9
V
2.92
3
3.05
‘V
48
cycles
2.1
V
Copyright © 2004
Rev. 1.0a, 2006-01-06
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
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