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MAX16819 Datasheet(PDF) 5 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) 5 Page - Maxim Integrated Products

   
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(VIN = VDIM = 12V, CVCC = 1µF, RSENSE = 0.5Ω connected between IN and CSN. Typical values at TA = +25°C, unless otherwise
noted.)
PWM DIMMING AT 200Hz
(1% DUTY CYCLE)
MAX16819 toc09
10µs/div
VDIM
2V/div
0V
0A
ILED
200mA/div
VIN = 12V, L = 47µH,
1 LED MAX16819
PWM DIMMING EXPANDED
(50% DUTY CYCLE)
MAX16819 toc10
1µs/div
VDIM
2V/div
0V
0A
ILED
200mA/div
VIN = 24V, L = 33µH,
4 LEDS MAX16820
PWM DIMMING EXPANDED
(50% DUTY CYCLE)
MAX16819 toc11
4µs/div
VDIM
2V/div
0V
0A
ILED
200mA/div
VIN = 12V, L = 47µH,
1 LED MAX16819
PWM DIMMING AT 20kHz
(10% DUTY CYCLE)
MAX16819 toc12
10µs/div
VDIM
2V/div
0V
0A
ILED
200mA/div
VIN = 24V, L = 47µH,
4 LEDS MAX16820
PWM DIMMING AT 20kHz
(90% DUTY CYCLE)
MAX16819 toc13
10µs/div
VDIM
2V/div
0V
0A
ILED
200mA/div
VIN = 24V, L = 33µH,
4 LEDS MAX16820
ILED VARIATION vs. TEMPERATURE
TEMPERATURE (°C)
110
95
-25 -10 5
35 50 65
20
80
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
-40
125
VIN = 24V
VIN = 12V
VDIM = 0V
ILED(NOMINAL) = 400mA
L = 47µH
MAX16819/MAX16820
2MHz High-Brightness LED Drivers with
High-Side Current Sense and 5000:1 Dimming
Maxim Integrated │ 5
www.maximintegrated.com
Typical Operating Characteristics (continued)


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