MAX16812 Datasheet, PDF (3/21 Pages) Maxim Integrated Products – Integrated High-Voltage LED Driver with Analog and PWM Dimming Control

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 = 0.2Ω, T_A = T_J = -40°C to +125°C, unless oth-
erwise noted. Typical values are at T_A = +25°C.)
PARAMETER
PWM COMPARATOR
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
COMP Input Leakage Current
SRC Input Leakage Current
Comparator Offset Voltage
Input Voltage Range
Propagation Delay
ERROR AMPLIFIER
FB Input Current
REFI Input Current
Error-Amplifier Offset Voltage
Input Common-Mode Range
Source Current
Sink Current
COMP Clamp Voltage
DC Gain
Unity-Gain Bandwidth
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
V_OS
I_COMP
V_COMP
V_FB = 1V, V_REFI = 1.2V
V_FB = 1V, V_REFI = 1V
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
-0.10
+0.10 µA
-5
+5
µA
860
mV
0
1.23
V
100
ns
-100
+100
nA
-100
+100
nA
-23
+23
mV
0
1.5
V
300
µA
80
µA
1.20
2.56
V
72
dB
0.8
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 = 0.2Ω, R_CS = 1Ω, T_A = T_J = -40°C to +125°C,
unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
HIGH-SIDE UNDERVOLTAGE LOCKOUT AND LINEAR REGULATOR (H_REG) ((V_HV - V_LV) = 21V)
H_REG Input-Voltage Threshold
V_{H_REG} is rising
3.60
TYP
3.887
MAX
4.20
UNITS
V
H_REG Supply Voltage
I_{H_REG} = 0
4.75
5
5.40
V
H_REG Load Regulation
I_{H_REG} = 0 to 3mA
Dropout Voltage
I_{H_REG} = 5mA
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
CS+ Input Bias Current
Input Voltage Range
I_CS+
V_CS- = V_LV, (V_CS+ - V_CS-) = 0.1V
V_CS- = V_LV
Minimum Output Current
Sinking
I_{CS_OUT Sourcing}
Output Voltage Range
DC Voltage Gain
V_{CS_OUT}
Unity-Gain Bandwidth
Maximum REFI Input Voltage
V_REFI
80
Ω
820
mV
500
µA
-1
+1
µA
0
0.25
V
25
µA
400
0
1.5
V
4
V/V
0.8
MHz
1.0
V
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