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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP55231 датащи(PDF) 48 Page - Texas Instruments |
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LP55231 датащи(HTML) 48 Page - Texas Instruments |
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48 / 53 page  LP55231 D1 D2 D3 D4 D5 D7 D8 D6 D9 VOUT COUT1 1 PF C2 0.47 PF ASEL0 ASEL1 GND MCU SCL SDA CLK TRIG INT CIN1 1 PF VIN = 2.7V TO 5.5V VDD C1 0.47 PF C1+ C1- C2+ C2- R1 R B G R B G G LP55231 D1 D2 D3 D4 D5 D7 D8 D6 D9 VOUT COUT2 1 PF C4 0.47 PF CIN2 1 PF VDD C3 0.47 PF C1+ C1- C2+ C2- R B G R B G R B G VIN VIO R2 R3 R4 EN SCL SDA CLK TRIG INT EN ASEL0 ASEL1 GND VIO R B G LP55231 SNOSCR5 – MARCH 2013 www.ti.com Typical Applications Figure 28. Typical Application Circuits The LP55231 enables up to four parallel devices together, which can drive up to 12 RGB LEDs or 36 single LEDs. This diagram shows the connections for two LP55231 devices for six RGB LEDs. Note that D7, D8, and D9 outputs are used for the red LEDs. The SCL and SDA lines should each have a pullup resistor placed somewhere on the line (R3 and R4; The pullup resistors are normally located on the bus master.). In typical applications values of 1.8k to 4.7k are used, depending on the bus capacitance, I/O voltage and the desired communication speed. INT and TRIG are open-drain pins, so they need pullup resistors. Typical values for R1 and R2 are from 120k to 180k for two devices. 48 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: LP55231 |
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