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參數(shù)資料
| 型號(hào)： | SP6682 |
| 英文描述： | High Efficiency Charge Pump Regulator for White LEDs |
| 中文描述： | 高效電荷泵調(diào)節(jié)器白光LED |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 190K |
| 代理商： | SP6682 |
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 |
|---|---|
| SP6682ER | High Efficiency Charge Pump Regulator for White LEDs |
| SP6682EU | High Efficiency Charge Pump Regulator for White LEDs |
| SP6682UEB | Evaluation Board Manual |
| SP6683 | High Power LED Driver for Parallel Configuration |
| SP6683ER | High Power LED Driver for Parallel Configuration |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6682_06 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency Charge Pump Regulator for White LEDs |
| SP6682EB | 功能描述:電源管理IC開發(fā)工具 Eval Board for SP6682 Series RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| SP6682ER | 制造商:Exar Corporation 功能描述:Driver, Other |
| SP6682ER/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency Charge Pump Regulator for White LEDs |
| SP6682ER-L | 功能描述:電荷泵 White LEDs RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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