MAX16822AASA+ datasheet(4/10 Pages) MAXIM

Part #	MAX16822AASA+

Description	2MHz, High-Brightness LED Drivers with Integrated MOSFET and High-Side Current Sense

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 10 page

2MHz, High-Brightness LED Drivers with

Integrated MOSFET and High-Side Current Sense

4

_______________________________________________________________________________________

NORMALIZED ILED

vs. VIN

VIN (V)

60

55

50

45

40

35

30

25

20

15

10

5

0.950

1.00

1.05

1.10

0.90

065

1 LED

3 LEDs

5 LEDs 7 LEDs

9 LEDs11 LEDs13 LEDs

15 LEDs

QUIESCENT CURRENT

vs. VIN

VIN (V)

60

55

45 50

15 20 25 30 35 40

5 10

50

100

150

200

250

300

350

400

450

500

0

065

VDIM = 0V

PWM DIMMING

AT 200Hz DUTY CYCLE (10%)

MAX16822A toc06

1ms/div

ILED

200mA/div

0

VDIM

5V/div

VIN = 48V

8 LEDs

Typical Operating Characteristics (continued)

(VIN = VDIM = 48V, CVCC = 1µF, RSENSE = 0.62

Ω, L = 220µH (connected between IN and CS). Typical values are at TA = +25°C,

unless otherwise noted.)

LED CURRENT

vs. VTEMP_I

VTEMP_I (V)

2.4

2.0

1.2

1.6

0.8

0.4

50

100

150

200

250

300

350

400

450

500

0

2.8

ILED

vs. TEMPERATURE

TEMPERATURE (

°C)

110

95

80

65

50

35

20

5

-10

-25

0.1

0.2

0.3

0.4

0.5

0

-40

125

VIN = 48V

PWM DIMMING

AT 200Hz DUTY CYCLE (90%)

MAX16822A toc07

1ms/div

ILED

200mA/div

VDIM

5V/div

VIN = 48V

8 LEDs

0

PWM DIMMING

AT 20kHz DUTY CYCLE (90%)

MAX16822A toc08

10

μs/div

ILED

200mA/div

VDIM

5V/div

0

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MAX16822AASA+ Datasheet(PDF) 4 Page - Maxim Integrated Products

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