LX1686(2000) Ver la hoja de datos (PDF) - Microsemi Corporation
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LX1686 Datasheet PDF : 5 Pages
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RangeMAXTM
PRODUCT DATABOOK 1996/1997
DIGITAL DIMMING CCFL CONTROLLER IC
PRELIMINARY DATA SHEET
LX1686
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 (continued)
Parameter
Digital Dimmer Block
FVERT Input Frequency Capture Range
FVERT Logic Threshold
FVERT Input Resistance
VCO Analog Output Peak Voltage
VCO Analog Output Valley Voltage
VCO Forced Source Current
Forced VCO Oscillation Frequency
Auto-Frequency Detection Response
BRITE Voltage Range
Full-Brightness Brite Input Voltage
Full-Darkness Brite Input Voltage
BRITE-to-ICOMP Propagation Delay
BRITE_POS Logic Threshold
DIG_DIM Logic Threshold
Direct Drive PWM Block
ISNS Threshold Voltage Range
VAMP Transconductance
VAMP Output Source Current
VAMP Output Sink Current
VAMP Output Voltage Range
VSNS Threshold Voltage
VCOMP Discharge Current
IAMP Transconductance
IAMP Output Source Current
IAMP Output Sink Current
IAMP Output Voltage Range
IAMP Input Offset Voltage
VCMP Input Offset Voltage
VCOMP-to-Output Propagation Delay
ICMP Input Offset Voltage
ICOMP-to-Output Propagation Delay
Output Buffer Block
Output Sink Current
Output Source Current
Bias Control Block
Voltage at Pin I_R
Pin I_R Maximum Source Current
VBG Output Resistance
ENABLE Logic Threshold - 3V
ENABLE Logic Threshold - 5.5V
ENABLE Threshold Hysteresis - 3V
ENABLE Threshold Hysteresis - 5.5V
Symbol
Test Conditions
FR_FVERT
VTH_FVERT
RFVERT
VP_VCO
VV_VCO
FR_VCO_I_SRC
FX_VCO
TD_AFD
VR_BRITE
VBRITE_FULL
VBRITE_DARK
TD_BRITE
Design Reference Only
Design Reference Only
VPD_CR = 3V, VDD = 3V
AFC_C = 0V, CVCO = 0.01µF
FVERT Frequency is 200Hz, VDD = 3V
VBRT_POS = VDD or float; BRITE = 2.5V
VBRT_POS = 0V, BRITE = 0.5V
VBRT_POS = VDD or float BRITE = 0.5V
VBRT_POS = 0V, BRITE = 2.5V
VR_ISNS
GM_VAMP
IS_VAMP
ISK_VAMP
VR_VAMP
VTH_VSNS
ID_VCOMP
GM_IAMP
IS_IAMP
ISK_IAMP
VR_IAMP
TSS
VOS_VCMP
TD_VCOMP
VOS_ICMP
TD_ICOMP
DIG_DIM = VDD
VCOMP = 1.25V
VCOMP = 1.5V
VCOMP = 1.5V
VCOMP = VSNS
VCOMP = 0.5V, VDD = 3V
BRITE = 0.5 - 2.6V
ICOMP = 1.5V, VDD = 3V
ICOMP = 1.5V, VDD = 3V
CVCOMP = 1µF
VCOMP = 1.25V, VDD = 3V
VDD = 3V
ICOMP = 0.5 to 2.25V, VDD = 3V
BRITE = 1.25V, RAMP_C = 2V, VDD = 3V
ISK_OUTBUF
IS_OUTBUF
AOUT, BOUT = VDD = 3V
AOUT, BOUT = 1V, VDD = 3V
AOUT, BOUT = 0V, VDD = 3V
AOUT, BOUT = 2V, VDD = 3V
VIR
IMAX_IR
RO_VBG
VEN3V
VEN5.5
VH_EN3
VH_EN5.5
Design Reference Only
Design Reference Only
VDD = 3V
VDD = 5.5V
LX1686
Units
Min. Typ. Max.
40
200 Hz
VDD/2
V
50
kΩ
2.5
V
0.65
V
-6.4 -5.8 -5.2 µA
250
Hz
1000
ms
0
VDD
V
2.35 2.5 2.65
V
2.35 2.5 2.65
V
0.35 0.5 0.65
V
0.35 0.5 0.65
V
300
ns
VDD/2
V
VDD/2
V
0
2.5
V
400
µmho
10
50 110 µA
20
70 120 µA
0
VDD
V
1.12 1.25 1.38
V
0.8
1.5
10
mA
70 200 700 µmho
-15 -40 -80 µA
20
60 100 µA
0
VDD
V
40
ms
-10
3
10
mV
250 500 ns
-10
3
10
mV
1100
ns
25
45
80
mA
20
35
55
mA
-35 -50 -80 mA
-20 -40 -55 mA
0.98
1.02
V
50
µA
10
kΩ
1.5 1.9 2.4
V
2.7 3.2 3.6
V
0.45
V
350
mV
Copyright © 2000
Rev. 0.4 1/00
3
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