收藏本站
DLD101
Typical Application Circuit
V CC Supply
R C
LED String
The DLD101 has been designed primarily for solid state lighting
applications, to be used as a current sink circuit solution for LEDs. It
features a N-channel MOSFET capable of 1A drive current and a pre-
biased NPN transistor (which allows direct connection to the base, or
via a series base resistor).
4
3
2
G
1
D
Figure 12 shows a typical application circuit diagram for driving an
LED or string of LEDs. Note that the pre-biased transistor (Q2) has
C
the option of bypassing the series base resistor by connecting directly
Q2
R2
B
Q1
V DS
to pin 7. The N-MOSFET (Q1) is configured as a V BE referenced
current sink and is biased on by R C . The current passed through the
LED string, MOSFET and source resistor, develops a voltage across
R S that provides a bias to the NPN transistor. Consideration of the
I LED ≈
E
5
6
R1
7
8
S
Option 3
Option 3:
V BE
R S
expected linear mode power dissipation must be factored into the
design, with respect to the DLD101's thermal resistance.
V DS = V CC – V F LED String – V RS
Options 1 & 2:
P Q1 = V DS * I LED String
I LED ≈
R S
Option 2
Option 1
1.1 V BE
R S
Option 2:
Capacitor is across R2 for
better noise performance.
PWM dimming functionality can be effected by either driving the NPN
base via an additional resistor (thereby overriding the feedback from
R S ) or by pulling the gate of the MOSFET down by direct connection.
The PWM control pulse stream can be provided by a micro-controller
or simple 555 based circuitry.
Fig. 12 Typical Application Circuit for
Linear Mode Current Sink LED Driver
Ordering Information (Note 7)
Part Number
DLD101-7
Case
DFN3030D-8
Packaging
3000/Tape & Reel
Notes:
7. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
DFN3030D-8
L101 = Product marking code
YYWW = Date code marking
YY = Last digit of year (ex: 10 for 2010)
L101
WW = Week code (01 to 53)
DLD101
Document number: DS32007 Rev. 8 - 2
7 of 9
www.diodes.com
April 2010
? Diodes Incorporated
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
DLP-2232H-PSOC5 MODULE PSOC5 USB ADAPTER FT2232H
DM163014 BOARD DEMO PICDEM4 12F629,16F630
DM163022-1 BOARD DEMO PIC16F87X PIC18FXX2
DM163030 KIT DEV PICDEM LCD2
DM163035 KIT DEVELOPMENT PICDEM LAB
DM164120-1 BOARD DEMO PICKIT 2 LP COUNT
DM164120-3 BOARD DEMO PICKIT2 28-PIN
DM164120-5 BOARD DEMO PICKIT 2 64/80-PIN
相关代理商/技术参数
DLD113 制造商:. 功能描述:
DLD1-156P 制造商:ITT Interconnect Solutions 功能描述:111496-0000 - Bulk
DLD1-156PW4 制造商:ITT Interconnect Solutions 功能描述:DLD1-156PW4 - Bulk
DLD1-156PW4A 制造商:ITT Interconnect Solutions 功能描述:111496-0001 - Bulk
DLD1-156R 制造商:ITT Interconnect Solutions 功能描述:ZIF Connector: Receptacle, 156 Pin, Crimp Contact 制造商:ITT Interconnect Solutions 功能描述:111497-0004 - Bulk
DLD1-156RW4B 制造商:ITT Interconnect Solutions 功能描述:111497-0009 - Bulk
DLD2 制造商:ITT 制造商全称:ITT Industries 功能描述:ZERO INSERTION FORCE CONNECTORS
DLD2410 功能描述:固态继电器-工业安装 10A LONG TIME DELAY RoHS:否 制造商:Crydom 控制电压范围:4 VDC to 32 VDC 负载电压额定值:7 VDC to 72 VDC 负载电流额定值:160 A 触点形式: 输出设备:SSR 安装风格:Panel