LP5569RTWRG4 datasheet(80/93 Pages) TI2

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LP5569

SNVSAP8A – JULY 2017 – REVISED SEPTEMBER 2017

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Table 108 lists suitable external components from some leading ceramic capacitor manufacturers.

Table 108. Suitable External Components

MODEL

TYPE

VENDOR

VOLTAGE RATING (V)

PACKAGE SIZE

C1005X5R1A105K

Ceramic X5R

TDK

0402

LMK105BJ105KV-F

Ceramic X5R

Taiyo Yuden

0402

ECJ0EB1A105M

Ceramic X5R

Panasonic

0402

9.2.1.3 Application Curves

Figure 120. Start-Up Waveform

Figure 121. PWM Dither Waveform

9.2.2 Using Multiple LP5569 Devices

The LP5569 device enables up to eight parallel devices together, which can drive up to 24 RGB LEDs or 72

single LEDs. Figure 122 shows the connections for two LP5569 devices for six RGB LEDs. Note that the LED6,

LED7, and LED8 outputs are used for the red LEDs. The SCL and SDA lines must each have a pullup resistor

placed somewhere on the line (R2 and R3; the pullup resistors are normally located on the bus master). In

typical applications, values of 1.8 kΩ to 4.7 kΩ are used, depending on the bus capacitance, I/O voltage, and the

desired communication speed. GPIO/TRIG/INT is open drain, which requires a pullup resistor. The typical value

for R1 is from 120 kΩ to 180 kΩ for two LP5569 devices.

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