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MAX16812 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part No. MAX16812
Description  Integrated High-Voltage LED Driver with Analog and PWM Dimming Control
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX16812 Datasheet(HTML) 3 Page - Maxim Integrated Products

 
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Integrated High-Voltage LED Driver
with Analog and PWM Dimming Control
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VEN = 12V, CL_REG = 3.3µF, CH_REG = 1µF, CREF = 47nF, VTGRM = 0V, RSRC = 0.2Ω, TA = TJ = -40°C to +125°C, unless oth-
erwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM COMPARATOR
COMP Input Leakage Current
ILKCOMP
VCOMP = 1V, VSRC = 0.5V, VTGRM = 1V,
VDIM = 0.5V
-0.10
+0.10
µA
SRC Input Leakage Current
ILKSRC
VCOMP = 0V, VSRC = 0.5V, VTGRM = 0V,
VDIM = 0.5V
-5
+5
µA
Comparator Offset Voltage
VOS(EA)
(VCOMP - VSRC) = VOS
860
mV
Input Voltage Range
VSRC
VCOMP = VSRC + 860mV
0
1.23
V
Propagation Delay
tPD
50mV overdrive
100
ns
ERROR AMPLIFIER
FB Input Current
VFB = 1V, VREFI = 1.2V
-100
+100
nA
REFI Input Current
VFB = 1V, VREFI = 1V
-100
+100
nA
Error-Amplifier Offset Voltage
VOS
VFB = VCOMP = 1.2V
-23
+23
mV
Input Common-Mode Range
VFB = (VCOMP - 0.9V)
0
1.5
V
Source Current
ICOMP
(VREFI - VFB) ≥ 0.5V
300
µA
Sink Current
(VFB - VREFI) ≥ 0.5V
80
µA
COMP Clamp Voltage
VCOMP
VREF = 1.2V, VFB = 0V
1.20
2.56
V
DC Gain
72
dB
Unity-Gain Bandwidth
0.8
MHz
ELECTRICAL CHARACTERISTICS
(VIN = VEN = 12V, CL_REG = 3.3µF, CH_REG = 1µF, CREF = 47nF, VTGRM = 0V, RSRC = 0.2Ω, RCS = 1Ω, TA = TJ = -40°C to +125°C,
unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-SIDE UNDERVOLTAGE LOCKOUT AND LINEAR REGULATOR (H_REG) ((VHV - VLV) = 21V)
H_REG Input-Voltage Threshold
VH_REG is rising
3.60
3.887
4.20
V
H_REG Supply Voltage
IH_REG = 0
4.75
5
5.40
V
H_REG Load Regulation
IH_REG = 0 to 3mA
80
Dropout Voltage
IH_REG = 5mA
820
mV
HIGH-SIDE CURRENT-SENSE AMPLIFIERS (VHV - VLV) = 21V
CS- Input Bias Current
ICS-
VCS- = VLV, (VCS+ - VCS-) = -0.1V
500
µA
CS+ Input Bias Current
ICS+
VCS- = VLV, (VCS+ - VCS-) = 0.1V
-1
+1
µA
Input Voltage Range
VCS- = VLV
0
0.25
V
Sinking
25
Minimum Output Current
ICS_OUT
Sourcing
400
µA
Output Voltage Range
VCS_OUT
0
1.5
V
DC Voltage Gain
4
V/V
Unity-Gain Bandwidth
0.8
MHz
Maximum REFI Input Voltage
VREFI
1.0
V


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