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LP5018 データシート(PDF) 40 Page - Texas Instruments

部品番号 LP5018
部品情報  LP50xx 18-, 24-Channel, 12-Bit, PWM Ultralow-Quiescent-Current, I2C RGB LED Drivers
PDF  59 Pages
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メーカー  TI2 [Texas Instruments]
ホームページ  https://www.ti.com
Logo TI2 - Texas Instruments

LP5018 データシート(HTML) 40 Page - Texas Instruments

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EN
SDA
SCL
OUT0
OUT1
OUT23
MCU
VCC
GND
LP5024
ADDR0
OUT2
VLED
VCC
IREF
OUT22
OUT21
VCAP
ADDR1
CVCAP
RIREF
VMCU
EN
SDA
SCL
OUT0
OUT1
OUT23
VCC
GND
LP5024
ADDR0
OUT2
VLED
IREF
OUT22
OUT21
VCAP
ADDR1
CVCAP
RIREF
RPULLUP
RPULLUP
CVCC
VCC
CVCC
Figure 8-1. Driving Dual LP5024 Application Example
8.2.1 Design Requirements
Set the LED current to 15mA using the RIREF resistor.
8.2.2 Detailed Design Procedure
LP50xx scales up the reference current (IREF) set by the external resistor (RIREF) to sink the output current (IOUT)
at each output port. The following formula can be used to calculate the external resistor (RIREF):
R
IREF =KIREF ×
V
IREF
I
SET
(2)
LP5018, LP5024
SLVSEB8C – OCTOBER 2018 – REVISED JULY 2024
www.ti.com
40
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Copyright © 2024 Texas Instruments Incorporated
Product Folder Links: LP5018 LP5024



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