LP55231 datasheet(11/53 Pages) TI

Teilenummer	LP55231

Bauteilbeschribung	LP55231 Programmable 9-Output LED Driver

PDF	53 Pages

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Hersteller	TI [Texas Instruments]

Direct Link	http://www.ti.com

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3 x SHARP GM5WA06270A RGB-LED

9 x 6.7 mA

9 x 10 mA

VDD (V)

2.7

3.3

3.9

4.5

5.1

6 x NICHIA NSCW100 WLED

6 x 10 mA

6 x 15 mA

VDD (V)

2.7

3.3

3.9

4.5

5.1

3.6V

2.8V

4.2V

4.5V

VDD

VOUT

TIME (2 ms/DIV)

3.6V

2.8V

3.6V

4.2V

VDD

VOUT

TIME (2 ms/DIV)

LP55231

www.ti.com

SNOSCR5 – MARCH 2013

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Unless otherwise specified: VDD = 3.6V, CIN = COUT = 1.0 µF, C1 = C2 = 0.47 µF, TA = 25°C.

(1)

Line Transient and Charge Pump Automatic Gain

Change (1.5x to 1x) with 6 LEDs at 1mA / 100% PWM

Change (1x to 1.5x) with 6 LEDs at 1mA / 100% PWM

Figure 11.

Figure 12.

100% PWM RGB LED Efficiency vs. VDD

100% PWM WLED Efficiency vs. VDD

Figure 13.

Figure 14.

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