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參數(shù)資料
| 型號： | LP3933 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs |
| 中文描述： | 照明管理系統(tǒng)6個白光LED和RGB或兩個閃光LED |
| 文件頁數(shù)： | 13/18頁 |
| 文件大?。?/td> | 406K |
| 代理商： | LP3933 |
RGB Driver Electrical Characteristics
(R1, G1, B1, R2, G2, B2 outputs)
Symbol
R
DS-ON
I
LEAKAGE
I
MAX
T
SMAX
T
SMIN
T
SRES
T
START/STOP
Duty
T
BLINK
D
CYCF
D
CYC
D
RESF
D
RES
F
PWMF
F
PWM
Parameter
Conditions
Min
Typ
3.5
0.03
Max
6
1
120
Units
μA
mA
s
ms
ms
s
%
%
%
%
%
%
kHz
kHz
ON Resistance
Off State Leakage Current
Maximum Sink Current
Maximum Slope Period
Minimum Slope Period
Slope Resolution
Start/Stop Resolution
Duty Step Size
Blinking Cycle Accuracy
Duty Cycle Range
Duty Cycle Range
Duty Resolution
Duty Resolution
PWM Frequency
PWM Frequency
I = 75 mA
V
FB
= 5V, LED driver off
(Note 5)
At Maximum Duty Setting
At Maximum Duty Setting
At Maximum Duty Setting
Cycle 1s
0.93
31
62
1/16
6.25
±
3
6
0
0
+6
99.6
33.2
FLASH_MODE = 1
FLASH_MODE = 0
FLASH_MODE = 1 (4 bit)
FLASH_MODE = 0 (4 bit)
FLASH_MODE = 1
FLASH_MODE = 0
6.64
2.21
20
6.67
RGB LED PWM Control
(Note 15)
R1DUTY[3:0]
G1DUTY[3:0]
B1DUTY[3:0]
R2DUTY[3:0]
G2DUTY[3:0]
B2DUTY[3:0]
R1SLOPE[3:0]
G1SLOPE[3:0]
B1SLOPE[3:0]
R2SLOPE[3:0]
G2SLOPE[3:0]
B2SLOPE[3:0]
R1ON[3:0]
G1ON[3:0]
B1ON[3:0]
R2ON[3:0]
G2ON[3:0]
B2ON[3:0]
R1OFF[3:0]
G1OFF[3:0]
B1OFF[3:0]
R2OFF[3:0]
G2OFF[3:0]
B2OFF[3:0]
DUTY sets the brightness of the LED by adjusting the duty cycle of the PWM driver. The minimum duty
cycle is 0% [0000] and the maximum in the FLASH mode is
A
100% [1111] of the peak pulse current.
The peak pulse current is determined by the external resistor, LED voltage drop and the boost voltage. In
normal mode the maximum duty cycle is 33%.
SLOPE sets the turn-on and turn-off slopes. Fastest slope is set by [0000] and slowest by [1111]. SLOPE
changes the duty cycle at constant, programmable rate. For each slope setting the maximum slope time
appears at maximum DUTY setting. When DUTY is reduced, the slope time decreases proportionally. For
example, in case of maximum DUTY, the sloping time can be adjusted from 31 ms [0000] to 930 ms
[1111]. For 50% DUTY [0111] the sloping time is 14 ms [0000] to 434 ms [1111]. The blinking cycle has
no
effect on SLOPE.
ON sets the beginning time of the turn-on slope. The on-time is relative to the selected blinking cycle
length. On-setting N (N = 0–15) sets the on-time to N/16 * cycle length.
OFF sets the beginning time of the turn-off slope. Off-time is relative to the blinking cycle length in the
same way as the on-time.
If
ON = 0, OFF = 0
and
RGB_PWM = 1
, then RGB outputs are continuously on (no blinking), the DUTY
setting controls the brightness and the SLOPE setting is ignored.
If ON and OFF are the same, but not 0, the RGB outputs are turned off.
CYCLE sets the blinking cycle: [00] for 0.25s, [01] for 0.5s, [10] for 1s and [11] for 2s. CYCLE effects to
all RGB LEDs.
CYCLE[1:0]
L
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13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3933SL | Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs |
| LP3933SLX | Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs |
| LP3936 | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3936SL | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3936SLX | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3933A WAF | 制造商:Texas Instruments 功能描述: |
| LP3933SL | 制造商:Texas Instruments 功能描述:LIGHTING MANAGEMENT IC POWERWISE |
| LP3933SL/NOPB | 功能描述:IC LED DRVR WT/RGB BCKLGT 32TCSP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| LP3933SLX | 功能描述:IC LED DRVR WT/RGB BCKLGT 32TCSP RoHS:否 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| LP3936 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lighting Management System for Six White LEDs and One RGB or FLASH LED |
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