- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383827 > SP7615 Four Channel Constant Current LED Driver PDF資料下載
參數(shù)資料
| 型號(hào)： | SP7615 |
| 英文描述： | Four Channel Constant Current LED Driver |
| 中文描述： | 4通道恒定電流LED驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 244K |
| 代理商： | SP7615 |
4
Date: 08/31/05
SP7615 Four Channel Constant Current LED Driver Copyright 2005 Sipex Corporation
THEORY OF OPERATION
V
CC
EN
GND
C1
1n
R1
D1
LED
SP7615
EN
GND
LED1
V
CC
I
SET
LED2
LED3
LED4
The R
value may be determined as R
=
1.26 * 1000/I
k
where 1.26 is a typical
I
pin voltage, 1000 is a typical current
multiplication ratio, and I
OUT
is a required
LED current in mA.
The voltage applied to the cathode of each
LED determines the overall efficiency of the
SP7615 circuit. The SP7615 is designed to
be able to sink 125mA at each of its four
outputs; LED1 - 4. The SP7615 is also
designed to be able to handle up to 16V on
these pins. This voltage handling capability
assumes the total power can be dissipated
by the SP7615. The power dissipation inside
the SP7615 will de directly related to the
voltage and current applied to these pins.
For example, the typical operating cathode
voltage is 500mV. At maximum current the
V
CC
EN
GND
C1
1n
R1
R2
SP7615
EN
GND
LED1
V
CC
I
SET
LED2
LED3
LED4
SP7615
EN
GND
LED1
V
CC
I
SET
LED2
LED3
LED4
power dissipated by one LED driver output
is 125mA * 500mV = 62.5mW. The following
charts show the power dissipation of the
SP7615 under various conditions. The
power dissipation should be kept below
1.3W for safe operation and long term
reliability at room temperature and derates
to 530mW at 85
o
C. While the above
operating conditions are recommended, the
part cannot be damaged due to internal
temperature control as described above in
the thermal shutdown section.
CATHODE VOLTAGE, SUPPLY VOLTAGE
AND POWER DISSIPATION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP7683 | Four Channel Charge Pump Regulator LED Driver |
| SP7683ER | Four Channel Charge Pump Regulator LED Driver |
| SP7683TR | Four Channel Charge Pump Regulator LED Driver |
| SP8059 | 10 Channel Photo Detector IC |
| SP8059CE | 10 Channel Photo Detector IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP7615_06 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Four Channel Constant Current LED Driver |
| SP7615_1 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7615EB | 功能描述:LED 照明開發(fā)工具 LDO LED Drvr for any Color LED w/A Shtdwn RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
| SP7615ER | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7615ER/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Four Channel Constant Current LED Driver |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。