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LP5523 Datasheet(PDF) 47 Page - Texas Instruments

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Part # LP5523
Description  LP5523 Programmable 9-Output LED Driver
PDF  56 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP5523 Datasheet(HTML) 47 Page - Texas Instruments

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LP5523
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-
GPO
R1
R
B
G
R
B
G
G
LP5523
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-
GPO
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
LP5523
www.ti.com
SNVS550D – SEPTEMBER 2009 – REVISED MAY 2013
Typical Applications
Figure 28. Typical Application Circuits
The LP5523 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 LP5523 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.
Copyright © 2009–2013, Texas Instruments Incorporated
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