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參數(shù)資料
| 型號： | SP6682UEB |
| 英文描述： | Evaluation Board Manual |
| 中文描述： | 評估板手冊 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 190K |
| 代理商： | SP6682UEB |
9
Date: 5/5/04
SP6682 High Efficiency Charge Pump Regulator for White LEDs Copyright 2004 Sipex Corporation
Where V
i
, I
i
are input voltage and current V
F
, I
F
are the forward voltage and operating current of
White LEDs I
Q
is quiescent current, which is
considered small compared with I
F
.
n is the boost ratio (X1.5 or X2)
SP6682 High Voltage White LED Driver
The SP6682 can also be configured as a high
voltage boost converter to drive more than 10
white LEDs. Figure 15 shows the schematic of
this application as well as actual data showing
efficiency of > 85%. By using an external induc-
tor, MOSFET and diode, high output voltage
can be generated to drive 12 white LEDs (2
branches, each branch has 6 white LEDs in
series). The current through the white LEDs is
determined by:
I
= V
FB
R
1
70
75
80
85
90
95
100
2.7
3.0
3.3
3.6
3.9
4.2
V
IN
(V)
E
D11
X5R Ce10uF
D3
SOT23
25V
R2
15
L1 LQH32CN4R7M11
4.7uH
D12
D8
DS SCHOTTKY MBR0530
D4
Q1
SI1304
Ceramic
EN/PWM
R1
15
D6
C1
D9
D7
C3 X5R
2.2uF 25V
D10
D2
R3
1M
ILED = VFB/R1 = 20mA
SP6682
1
2
7
6
5
4
3
8
9
10
V
OUT
C1P
C2N
EN/PWM
FB
V
MODE
V
IN
GND
C1N
C2P
D1
D5
Vin: 2.7-4.2V
Figure 15. Using SP6682 as a High Voltage White LED Driver
APPLICATION INFORMATION
PINOUTS
V
OUT
C1P
V
IN
V
MODE
FB
SP6682
10 Pin MSOP
1
2
3
4
5
10
9
8
7
6
C2P
C1N
GND
C2N
EN/PWM
SP6682
10 Pin DFN
10
9
8
7
6
1
2
3
4
5
C2P
C1N
GND
C2N
EN/PWM
VOUT
C1P
VIN
VMODE
FB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6683 | High Power LED Driver for Parallel Configuration |
| SP6683ER | High Power LED Driver for Parallel Configuration |
| SP6683EU | High Power LED Driver for Parallel Configuration |
| SP6685ERTR | Charge Pump LED Driver For Camera Flash |
| SP6685 | Charge Pump LED Driver For Camera Flash |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6683 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Power LED Driver for Parallel Configuration |
| SP6683EB | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6683ER | 制造商:Exar Corporation 功能描述:Driver, Other |
| SP6683ER/TR | 功能描述:LED照明驅(qū)動器 High Power Parallel Configuration 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 |
| SP6683ER-L | 功能描述:LED照明驅(qū)動器 Configuration 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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