LX1692 Просмотр технического описания (PDF) - Microsemi Corporation
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LX1692 Datasheet PDF : 15 Pages
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LX1692
TM
®
Full Bridge Resonant CCFL Controller
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the operating ambient temperature -20°C ≤ TA ≤ 70°C except where
otherwise noted and the following test conditions:.
Parameter
` PWM BLOCK
Symbol
Test Conditions
LX1692
Units
Min Typ Max
ISNS Input Voltage Range
VR_ISNS
Maximum recommended for linear operation of
error amplifier
-4
+4
Vpk
OC_SNS Input Voltage Range
VR_OC
-4
+4.0 Vpk
OV_SNS Input Voltage Range
VR_OV
-4
+4.0 Vpk
VIN_SNS Input Voltage Range
ICOMP Error Amp
Transconductance
VR_VINS
GM_EAMP
ISNS =1.5V
-0.3
VDDP Vpk
100
220
410 µmho
ICOMP Output Source Current
IS_EAMP
ΔV_EAIN = 1.0V
100
µA
ICOMP Output Sink Current
ICOMP Output Voltage Range
ISK_EAMP
VR_EAMP
ΔV_EAIN = 1.0V
100
µA
0
VDDA V
ISNS-BRITE_A Input Offset Voltage VOS_EAMP ISNS=1.5V, Ta=25°C
-100
0
100 mV
ICOMP Discharge Current
ICOMP to A/B Output Propagation
Delay
ID_ICOMP
TD_COMP
10
mA
1100
ns
VCOMP High voltage
VHI_VCOMP VOVSNS = 0V, See Note 1
VDDA
V
VCOMP Sink Current
` OUTPUT BUFFER BLOCK
ILO_VCOMP VVCOMP = 2V
1.5
mA
Output Resistance
RON_SRC VDDP = 5V
30
Ω
Output Resistance
RON_SINK VDDP = 5V
30
Ω
Pull Up Resistance
RUP
Cout, Dout
20
KΩ
Pull Down Resistance
RDN
Aout, Bout
20
KΩ
Output voltage High
VOH
CAOUT = CBOUT= CCOUT = CDOUT=2000pF
VDDP-0.4
VDDP V
Output voltage low
VOL
CAOUT = CBOUT= CCOUT = CDOUT=2000pF
0
0.4
V
Min off time
tOFF
320
ns
Note 1. External resistor divider is connected to Vcomp pin. 100K between VDDA and Vcomp, 300K between Vcomp to GND.
Copyright © 2004
Rev. 1.2, 12/20/2006
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 7
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