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MAX16831 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX16831
Description  High-Voltage, High-Power 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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MAX16831 Datasheet(HTML) 4 Page - Maxim Integrated Products

 
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High-Voltage, High-Power LED Driver with
Analog and PWM Dimming Control
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VCC = VUVEN = 14V, CREG1 = 1µF, CREG2 = 1µF, CCLMP = 0.1µF, RT = 25kΩ, TA = TJ = -40°C to +125°C, unless otherwise noted.
Typical specifications are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ERROR AMPLIFIER
FB Input Bias Current
-100
+100
nA
EAMP Output Sink Current
VFB = 1.735V, VCOMP = 1V
3
7
mA
EAMP Output Source Current
VFB = 0.735V, VCOMP = 1V
2
7
mA
EAMP Input Common-Mode
Voltage
0
3.0
V
EAMP Output Clamp Voltage
1.1
1.7
2.4
V
Voltage Gain
AV
RCOMP = 100k
Ω to AGND
80
dB
Unity-Gain Bandwidth
GBW
RCOMP = 100k
Ω to AGND, CCOMP = 100pF
to AGND
0.5
MHz
OSCILLATOR, OSC SYNC, CLK, AND CLKOUT
fSWMIN
125
RTSYNC Frequency Range
fSWMAX
500
kHz
RT = 25k
475
500
525
RTSYNC Oscillator Frequency
RT = 100k
106
125
143
kHz
RTSYNC High-Level Voltage
VSIHL
2.8
V
RTSYNC Low-Level Voltage
VSILL
0.4
V
CLKOUT High Level
ISINK = 0.8mA
2.8
V
CLKOUT Low Level
ISOURCE = 1.6mA
0.4
V
CLKOUT Maximum Load
Capacitance
CCLK_CAP
fSW = 500kHz
500
pF
DIM SYNC, DIM RAMP, AND DIM PWM GEN
Internal Ramp Frequency
fRAMP
160
200
240
Hz
External Sync Frequency Range
fDIM
80
2000
Hz
External Sync Low-Level Voltage
VLTH
0.4
V
External Sync High-Level Voltage
VHTH
3.2
V
DIM Comparator Offset
VDIMOS
170
200
300
mV
DIGITAL SOFT-START
Soft-Start Duration
tSS
4.0
ms
OVERVOLTAGE COMPARATOR, LOAD OVERCURRENT COMPARATOR
OVP Overvoltage Comparator
Threshold
VOV
VOV rising
1.20
1.235
1.27
V
OVP Overvoltage Comparator
Hysteresis
VOV_HYST
63.5
mV
SLOPE COMPENSATION
Slope Compensation Peak
Voltage Per Cycle
Clock generated by RT
120
mV
Slope Compensation
External clock applied to RTSYNC
15
mV/µs


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