Diodes AP3612 Manuel d'utilisateur télécharger pdf (Page 10)

Preliminary Datasheet

Boost Type LED Driver with 12-Channel Current Source AP3612

Aug. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Typical Performance Characteristics (Continued)

=24V, V

=5V, 13 LEDs in series, 12 strings in parallel, 60mA/string, T

=25°C, unless otherwise

specified.

Figure 8. Channel Current vs. Channel Figure 9. Efficiency vs. Output Current

Figure 10. Steady State Figure 11. System Startup

012345

Channel Current (mA)

Channel

SET

=20mA

SET

=73mA

SET

=40mA

SET

=60mA

0 100 200 300 400 500 600 700 800

Efficiency (%)

Output Current (mA)

=24V

LED: 12P13S

10mA/div

50V/div

OUT_AC

500

V/div

200

V/div

Time 1µs/div

20V/div

OUT

20V/div

100mA/div

Time 20ms/div

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17 18

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Diodes AP3612 Manuel d'utilisateur Page 10