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LP3954TL/NOPB 데이터시트(PDF) 15 Page - Texas Instruments

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부품명 LP3954TL/NOPB
상세설명  Advanced Lighting Management Unit
PDF  60 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

LP3954TL/NOPB 데이터시트(HTML) 15 Page - Texas Instruments

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R1
G1
RR1
RR2
RB1
B1
RB2
RG1
RG2
R1
control
G1
control
B1
control
VOUT
RGB1 output as switch (SW)
R1
G1
B1
R1
control
G1
control
B1
control
VOUT
RGB1 output as a constant
current sink (CC)
LP3954
www.ti.com
SNVS340D – JUNE 2005 – REVISED MARCH 2013
Table 2. RGB_ctrl Register (00H)
1
R1, G1 and B1 are switches
→ limit current with ballast resistor
CC_RGB1
bit7
0
R1, G1 and B1 are constant current sinks, current limited internally
1
R2, G2 and B2 are switches
→ limit current with ballast resistor
CC_RGB2
bit6
0
R2, G2 and B2 are constant current sinks, current limited internally
1
R1 is on
r1sw
bit5
0
R1 is off
1
G1 is on
g1sw
bit4
0
G1 is off
1
B1 is on
b1sw
bit3
0
B1 is off
1
R2 is on
r2sw
bit2
0
R2 is off
1
G2 is on
g2sw
bit1
0
G2 is off
1
B2 is on
b2sw
bit0
0
B2 is off
Command Based Pattern Generator for Color LEDs
The LP3954 has a unique stand-alone command based pattern generator with 8 user controllable 16-bit wide
commands. Since write registers are 8-bit long one command requires 2 write cycles. Each command has
intensity level for each LED, command execution time (CET) and transition time (TT). The command structure is
shown in following two figures.
Copyright © 2005–2013, Texas Instruments Incorporated
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Product Folder Links: LP3954



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