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Typical operating characteristics (continued) – Rainbow Electronics MAX16832C User Manual

Page 4

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MAX16832A/MAX16832C

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

4

_______________________________________________________________________________________

NORMALIZED I

LED

CURRENT

vs. INPUT VOLTAGE

MAX16832A toc04

V

IN

(V)

NORMALIZED I

LED

CURRENT

60

55

50

45

40

35

30

25

20

15

10

5

0

65

0.96

0.97

0.98

0.99

1.00

1.01

1.02

1.03

1.04

1.05

0.95

1 LED 3 LEDs 5 LEDs

7 LEDs 9 LEDs

11 LEDs

13 LEDs

15 LEDs

QUIESCENT CURRENT

vs. INPUT VOLTAGE

MAX16832A toc05

V

IN

(V)

QUIESCENT CURRENT (

μ

A)

60

55

45 50

15 20 25 30 35 40

5 10

50

100

150

200

250

300

350

400

450

500

0

0

65

V

DIM

= 0V

PWM DIMMING

AT 200Hz (10% DUTY CYCLE)

MAX16832A toc06

1ms/div

I

LED

200mA/div

0

0

V

DIM

5V/div

V

IN

= 48V

8 LEDs

PWM DIMMING

AT 200Hz (90% DUTY CYCLE )

MAX16822A toc07

1ms/div

I

LED

200mA/div

V

DIM

5V/div

0

0

V

IN

= 48V

8 LEDs

PWM DIMMING

AT 20kHz (90% DUTY CYCLE)

MAX16832A toc08

10

μs/div

I

LED

200mA/div

V

DIM

5V/div

0

0

V

IN

= 48V

8 LEDs

LED CURRENT

vs. V

TEMP_I

MAX16832A toc09

V

TEMP_I

(V)

LED CURRENT (mA)

2.4

2.0

1.2

1.6

0.8

0.4

500
450
400
350
300
250
200
150
100

50

650

550

600

750
700

800

0

0

2.8

I

LED

vs. TEMPERATURE

MAX16832A toc10

TEMPERATURE (

°C)

I

LED

(A)

110

95

80

65

50

35

20

5

-10

-25

-40

125

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0

V

IN

= 48V

Typical Operating Characteristics (continued)

((V

IN

= V

DIM

= 48V, R

SENSE

= 0.3Ω, L = 220µH (connected between IN and CS). Typical values are at T

A

= +25°C, unless otherwise

noted.)