參數(shù)資料
型號(hào)： LP5526TLX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 顯示驅(qū)動(dòng)器
英文描述： 4 Mbit Uniform Sector, Serial Flash Memory
中文描述： LED DISPLAY DRIVER, PBGA25
封裝： 2.54 X 2.54 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, BGA-25
文件頁數(shù)： 12/33頁
文件大?。?/td> 1150K
代理商： LP5526TLX
Functionality of Color LED
Outputs (RLED, GLED, BLED)
LP5526 has one RGB/color LED output, consisting of three
individual LED output pins. Output pins can be used in
switch mode or constant current mode. Output mode can be
selected with the control register (address 00H) bit CC_SW.
If the bit is set high, then RGB outputs are in switch mode,
otherwise in constant current mode. These modes are de-
scribed later in separate chapters.
RGB LED output control can be done in three ways:
1.
Defining the expected color and brightness with internal
PWM in RGB register (address 01H)
2.
Direct setting each LED ON/OFF via RGB Control reg-
ister (address 00H)
3.
External PWM control
1. BRIGHTNESS CONTROL WITH RGB REGISTER
If the RGB LED output is used by defining the balance and
brightness in the RGB register, then one needs to set EN-
_RGB bit high and RGB_PWM bit high in the Control register
(address 00H). RSW, GSW and BSW are used to enable
each LED output, enabled when written high. CC_SW de-
fines the LED output mode. A single register is used for
defining the color and brightness for the RGB LED output.
OVL bit selects overlapping/non-overlapping mode. Overlap-
ping mode is selected when OVL = 1.
CONTROL REGISTER (00H)
Bit
Description
7
0 = Internal PWM control disabled
1 = Internal PWM control enabled
6
0 = RGB outputs disabled
1 = RGB outputs enabled
5
0 = Constant current sink mode
1 = Switch mode
3
0 = RLED disabled
1 = RLED enabled
2
0 = GLED disabled
1 = GLED enabled
1
0 = BLED disabled
1 = BLED enabled
RGB REGISTER (01H)
7:4
Color for RGB LED output
3:1
Brightness control
0
0 = Non-overlapping mode
1 = Overlapping mode
Name
RGB_PWM
EN_RGB
CC_SW
RSW
GSW
BSW
COLOR[3:0]
BRIGHT[2:0]
OVL
Brightness control is logarithmic and is programmed as fol-
lows:
Bright[2:0]
Brightness [%]
Ratio to max
brightness
0
1/64
1/32
1/16
1/8
1/4
1/2
1/1
000
001
010
011
100
101
110
111
0
1.56
3.12
6.25
12.5
25
50
100
16 colors can be selected as follows. Please note that exact color depends on RGB LED current and type. Color setting is
valid only in non-overlapping mode.
COLOR[3:0]
RED
active [%]
100
0
0
50
0
50
33
50
25
25
25
75
0
25
0
25
GREEN
active [%]
0
100
0
50
50
0
33
25
50
50
25
25
75
75
25
0
BLUE
active [%]
0
0
100
0
50
50
33
25
25
25
50
0
25
0
75
75
RGB COLOR
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
red
green
blue
yellow
cyan
magenta
white
pink
light green
light blue
orange
deep pink
spring green
lawn green
sky blue
indigo
L
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參數(shù)描述
LP5526TLX/NOPB 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
LP5527 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization
LP55271 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization
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LP55271TL/NOPB 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
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