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MAX16814 Datasheet(PDF) 6 Page - Maxim Integrated Products

Part # MAX16814
Description  Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX16814 Datasheet(HTML) 6 Page - Maxim Integrated Products

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Integrated, 4-Channel, High-Brightness LED Driver
with High-Voltage Boost and SEPIC Controller
6 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VIN = VEN = 12V, fSW = 300kHz, RSETI = 15kI, CVCC = 1FF, VCC = VDRV, NDRV = COMP = OUT_ = unconnected, VOVP = VCS =
VLEDGND = VDIM = VPGND = VSGND = 0V, load = four strings of seven white LEDs, TA = +25NC, unless otherwise noted.)
VCC LINE REGULATION
VIN (V)
35
30
25
20
15
10
5.00
5.02
5.04
5.06
5.08
4.96
4.98
5
40
TA = +125NC
TA = +25NC
TA = -40NC
VCC LOAD REGULATION
IVCC (mA)
60
40
20
4.92
4.94
4.96
4.98
5.00
5.02
5.04
5.06
5.08
5.10
4.90
0
80
TA = -40NC
TA = +25NC
TA = +125NC
SWITCHING FREQUENCY vs. 1/RT
1/RT (mS)
0.26
0.22
0.14 0.18
0.10
0.06
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0.02
0.30
STARTUP WAVEFORM WITH
DIM ON PULSE WIDTH < tSW
MAX16814 toc12
IOUT_
100mA/div
0A
VIN
20V/div
0V
VDIM
5V/div
0V
VLED
20V/div
0V
40ms/div
STARTUP WAVEFORM WITH DIM
ON PULSE WIDTH = 10tSW
MAX16814 toc13
IOUT1
100mA/div
VLED
10V/div
0V
0A
0V
VIN
20V/div
VDIM
5V/div
0V
40ms/div
FIGURE 2
STARTUP WAVEFORM WITH DIM
CONTINOUSLY ON
MAX16814 toc14
IOUT1
100mA/div
VLED
10V/div
0V
0A
0V
0V
VIN
20V/div
VDIM
5V/div
40ms/div
FIGURE 2
MOSFET DRIVER ON-RESISTANCE
vs. TEMPERATURE
TEMPERATURE (NC)
100
75
50
25
0
-25
0.7
0.9
1.1
1.3
1.5
0.5
-50
125
pMOS
nMOS


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