Rainbow-electronics MAX16832C Bedienungsanleitung PDF herunterladen (Seite 4)

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)

NORMALIZED I

LED

CURRENT

60555045403530252015105065

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)

QUIESCENT CURRENT (μA)

605545 5015 20 25 30 35 405 10

100

150

200

250

300

350

400

450

500

065

DIM

= 0V

PWM DIMMING

AT 200Hz (10% DUTY CYCLE)

MAX16832A toc06

1ms/div

LED

200mA/div

DIM

5V/div

= 48V

8 LEDs

PWM DIMMING

AT 200Hz (90% DUTY CYCLE )

MAX16822A toc07

1ms/div

LED

200mA/div

DIM

5V/div

= 48V

8 LEDs

PWM DIMMING

AT 20kHz (90% DUTY CYCLE)

MAX16832A toc08

10μs/div

LED

200mA/div

DIM

5V/div

= 48V

8 LEDs

LED CURRENT

vs. V

TEMP_I

MAX16832A toc09

TEMP_I

(V)

LED CURRENT (mA)

2.4

2.0

1.2

1.60.80.4

500

450

400

350

300

250

200

150

100

650

550

600

750

700

800

2.8

LED

vs. TEMPERATURE

MAX16832A toc10

TEMPERATURE (°C)

LED

(A)

1109580655035205-10-25-40 125

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

= 48V

Typical Operating Characteristics (continued)

((V

= V

DIM

= 48V, R

SENSE

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

= +25°C, unless otherwise

noted.)

1 2 3 4 5 6 7 8 9

MAX16832A/MAX16832C 1

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