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Integrated High-Voltage LED Driver
with Analog and PWM Dimming Control
ELECTRICAL CHARACTERISTICS (continued)
(V IN = V EN = 12V, C L_REG = 3.3μF, C H_REG = 1μF, C REF = 47nF, V TGRM = 0V, R SRC = 0.2 Ω , T A = T J = -40°C to +125°C, unless oth-
erwise noted. Typical values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM COMPARATOR
COMP Input Leakage Current
SRC Input Leakage Current
Comparator Offset Voltage
Input Voltage Range
Propagation Delay
I LKCOMP
I LKSRC
V OS(EA)
V SRC
t PD
V COMP = 1V, V SRC = 0.5V, V TGRM = 1V,
V DIM = 0.5V
V COMP = 0V, V SRC = 0.5V, V TGRM = 0V,
V DIM = 0.5V
(V COMP - V SRC ) = V OS
V COMP = V SRC + 860mV
50mV overdrive
-0.10
-5
0
860
100
+0.10
+5
1.23
μA
μA
mV
V
ns
ERROR AMPLIFIER
FB Input Current
REFI Input Current
V FB = 1V, V REFI = 1.2V
V FB = 1V, V REFI = 1V
-100
-100
+100
+100
nA
nA
Error-Amplifier Offset Voltage
Input Common-Mode Range
Source Current
Sink Current
COMP Clamp Voltage
V OS
I COMP
V COMP
V FB = V COMP = 1.2V
V FB = (V COMP - 0.9V)
(V REFI - V FB ) ≥ 0.5V
(V FB - V REFI ) ≥ 0.5V
V REF = 1.2V, V FB = 0V
-23
0
300
80
1.20
+23
1.5
2.56
mV
V
μA
μA
V
DC Gain
Unity-Gain Bandwidth
72
0.8
dB
MHz
ELECTRICAL CHARACTERISTICS
(V IN = V EN = 12V, C L_REG = 3.3μF, C H_REG = 1μF, C REF = 47nF, V TGRM = 0V, R SRC = 0.2 Ω , R CS = 1 Ω , T A = T J = -40°C to +125°C,
unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-SIDE UNDERVOLTAGE LOCKOUT AND LINEAR REGULATOR (H_REG) ((V HV - V LV ) = 21V)
H_REG Input-Voltage Threshold
H_REG Supply Voltage
V H_REG is rising
I H_REG = 0
3.60
4.75
3.887
5
4.20
5.40
V
V
H_REG Load Regulation
Dropout Voltage
I H_REG = 0 to 3mA
I H_REG = 5mA
820
80
Ω
mV
HIGH-SIDE CURRENT-SENSE AMPLIFIERS (V HV - V LV ) = 21V
CS- Input Bias Current
I CS-
V CS- = V LV , (V CS+ - V CS- ) = -0.1V
500
μA
CS+ Input Bias Current
Input Voltage Range
Minimum Output Current
Output Voltage Range
I CS+
I CS_OUT
V CS_OUT
V CS- = V LV , (V CS+ - V CS- ) = 0.1V
V CS- = V LV
Sinking
Sourcing
-1
0
25
400
0
+1
0.25
1.5
μA
V
μA
V
DC Voltage Gain
Unity-Gain Bandwidth
4
0.8
V/V
MHz
Maximum REFI Input Voltage
V REFI
1.0
V
_______________________________________________________________________________________
3
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