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MAX16819 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part No. MAX16819
Description  2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX16819 Datasheet(HTML) 3 Page - Maxim Integrated Products

   
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(VIN = 12V, VDIM = VIN, CVCC = 1µF, RSENSE = 0.5Ω, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Note 1: All devices are 100% production tested at TJ = +25°C and +125°C. Limits to -40°C are guaranteed by design.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GATE DRIVER
Gate Driver Source Current
VCSN = VIN, VDRV = 0.5 x VCC
0.5
A
Gate Driver Sink Current
VCSN = VIN - 250mV, VDRV = 0.5 x VCC
1
A
Gate Driver Output-Voltage High
VOH
IDRV = 10mA
VCC - 0.5
V
Gate Driver Output-Voltage Low
VOL
IDRV = -10mA
0.5
V
DIM INPUT
Maximum DIM Frequency
fDIM
20
kHz
DIM Input-Voltage High
VIH
VCSN = VIN, increase DIM until VDRV >
(VCC - 0.5V)
2.8
V
DIM Input-Voltage Low
VIL
VCSN = VIN, decrease DIM until
VDRV < 0.5V
0.6
V
DIM Hysteresis
DIMHYS
200
mV
DIM Turn-On Time
tDIMON
DIM rising edge to VDRV = 0.5 x VCC,
CDRV = 1nF
100
ns
DIM Turn-Off Time
tDIMOFF
DIM falling edge to VDRV = 0.5 x VCC,
CDRV = 1nF
100
ns
DIM Input Leakage High
VDIM = VIN
10
µA
DIM Input Leakage Low
VDIM = 0V
-1
+1
µA
VCC REGULATOR
Regulator Output Voltage
VCC
IVCC = 0.1mA to 10mA, VIN = 5.5V to 28V
4.5
5.5
V
IVCC = 0.1mA to 10mA, VIN = 4.5V to 28V
4.0
5.5
V
Load Regulation
IVCC = 0.1mA to 10mA, VIN = 12V
4
Line Regulation
VIN = 6V to 28V, IVCC = 10mA
11
mV
Power-Supply Rejection Ratio
PSRR
VIN = 12V, IVCC = 5mA, fIN = 10kHz
-35
dB
Current Limit
ILIM
VIN = 4.5V, VCC = 0V
45
mA
VIN = 4.5V, VCC = 4V
18
mA
Regulator Startup Time
tSTART
VCC = 0 to 4.5V
350
µs
MAX16819/MAX16820
2MHz High-Brightness LED Drivers with
High-Side Current Sense and 5000:1 Dimming
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)


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