Rainbow-electronics MAX17061 Manual do Utilizador descarregar pdf (Página 7)

MAX17061

8-String White LED Driver with

SMBus for LCD Panel Applications

_______________________________________________________________________________________

BOOST CONVERTER EFFICIENCY

vs. INPUT VOLTAGE (BRIGHTNESS = 100%)

MAX17061 toc01

INPUT VOLTAGE (V)

BOOST CONVERTER EFFICIENCY (%)

19161310

LED CURRENT

vs. SMBus BRIGHTNESS SETTING

MAX17061 toc02

SMBus BRIGHTNESS SETTING

LED CURRENT (mA)

200 250150100500

LED CURRENT

vs. PWMI DUTY CYCLE

MAX17061 toc03

PWMI DUTY CYCLE (%)

LED CURRENT (mA)

80 100604020

SMBus = 255

SMBus = 128

LED CURRENT vs. AMBIENT TEMPERATURE

(BRIGHTNESS = 100%)

MAX17061 toc04

AMBIENT TEMPERATURE (°C)

LED CURRENT (mA)

60 804020

24.6

25.0

24.8

25.4

25.2

25.8

25.6

26.0

24.0

24.4

24.2

LED CURRENT

vs. INPUT VOLTAGE

MAX17061 toc05

LED CURRENT (mA)

17 2014118

SMBus = 0xFF

SMBus = 0x1F

INPUT VOLTAGE (V)

SUPPLY CURRENT

vs. INPUT VOLTAGE

MAX17061 toc06

SUPPLY CURRENT (mA)

17 2014118

SMBus = 255

SMBus = 0

INPUT VOLTAGE (V)

SHUTDOWN CURRENT

vs. INPUT VOLTAGE

MAX17061 toc07

SHUTDOWN CURRENT (μA)

17 2014118

INPUT VOLTAGE (V)

Typical Operating Characteristics

(Circuit of Figure 1, V

= 12V, C

CCV

= 0.022µF, R

CCV

= 5.1kΩ, V

ISET

= V

OSC

= V

, R

FSET

= 464kΩ, V

PWMI

= GND, LEDs =

10 series x 4 parallel strings, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 11 12 ... 25 26

MAX17061 1

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