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LP5569ARTWR bảng dữ liệu(PDF) 80 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  LP5569 Nine-Channel I2C RGB LED Driver With Engine Control and Charge Pump
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LP5569ARTWR bảng dữ liệu(HTML) 80 Page - Texas Instruments

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LP5569
SNVSAP8A – JULY 2017 – REVISED SEPTEMBER 2017
www.ti.com
Product Folder Links: LP5569
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
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
10
0402
LMK105BJ105KV-F
Ceramic X5R
Taiyo Yuden
10
0402
ECJ0EB1A105M
Ceramic X5R
Panasonic
10
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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