LP55231 datasheet(9/59 Pages) TI2

Numer części	LP55231

Szczegółowy opis	LP55231 Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump - WQFN

PDF	59 Pages

Scroll/Zoom	100%

Producent	TI2 [Texas Instruments]

Strona internetowa	https://www.ti.com

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9 / 59 page

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

EXTERNAL CLK (RIGHT SCALE)

INTERNAL CLK (LEFT SCALE)

750

500

250

VDD (V)

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

VOUT 2V/DIV

SCL

SDA

STOP CONDITION

TIME (40 Ps/DIV)

LP55231

www.ti.com

SNOSCR5D – MARCH 2013 – REVISED DECEMBER 2016

Product Folder Links: LP55231

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Typical Characteristics (continued)

Unless otherwise specified: VDD = 3.6 V, CIN = COUT = 1 µF, C1 = C2 = 0.47 µF, TA = 25°C. CIN, COUT, C1, C2: Low-ESR

surface-mount ceramic capacitors (MLCCs) used in setting electrical characteristics.

Charge Pump In 1× Mode

If the charge pump is OFF the supply current is even lower.

Figure 9. Power Save Mode Supply Current vs VDD

51h To Addr 36h

ILOAD = 60 mA

VDD = 3.6 V

Figure 10. Serial Bus Write and Charge Pump Start-up

Waveform

Figure 11. 100% PWM RGB LED Efficiency vs VDD

Figure 12. 100% PWM WLED Efficiency vs VDD

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