收藏本站
A Product Line of
Diodes Incorporated
ZXLD383
Application Examples
Apart from the Garden Light application circuit shown on the front page of this datasheet, the ZXLD383 may be used in
many other ways. The following circuits and notes show some other possibilities and give typical performance details.
Standard operating mode
The following circuit demonstrates how few components are required to produce a light source using the ZXLD383.
Operating from a single cell, this simple circuit is suited for use in car key fobs, novelty products etc. where small size and
low cost are critical aspects.
By directly wiring the ENA pin to V CC , the part is permanently enabled once a power supply is provided. The ZXLD383 is
highly tolerant of supply ripple so no decoupling of V CC should be needed in a compactly constructed circuit. Also, the
part’s capability of operating with a V CC below 0.9V means that this simple circuit will make the best use of available battery
capacity.
The attached table shows the average LED currents that can be obtained using a range of inductor values. Also shown are
the peak currents required to achieve the given currents.
Z XLD 383
L
I L E D (peak )
I L E D (avg)
1.5V
EN A
GN D
NC
1
2
3
5
4
VC C
VOU T
L1
LED
(uH )
47
22
10
6.8
4.7
(m A )
45
100
210
330
415
(m A )
8.5
17.3
34
50
63
Notes:
V LED = 3.5V
Low Ripple LED Current Mode
It is possible that the peak LED current required to achieve a given average current is either too high for the LED of choice
or it leads to some loss of efficiency (due to LED resistance losses). In these cases, just two extra low cost components
can be added to provide a low ripple current supply for the LED. The Schottky diode D1 and capacitor C1 rectifies and
smoothes the output of the ZXLD383 giving a low ripple current supply to the load LED. Of course, this circuit could also be
used to power loads other than LEDs.
Z XL D 3 8 3
L
I L E D
EN A
GN D
1
2
5
VC C
L1
(uH )
47
(m A )
7.5
1.5V
NC
3
4
VOU T
D1
C1
LED
22
10
6.8
4.7
15.5
31
46
58
Notes: V LED = 3.5V, D1 = ZHCS1000, C1 = 1μF (low ESR)
ZXLD383
Document number: DS32189 Rev. 3 - 2
7 of 10
www.diodes.com
May 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
ZXSC300E5TA IC LED DRVR WHITE BCKLGT SOT23-5
ZXSC380FHTA IC LED DRVR WHITE BCKLGT SOT23-3
ZXSC400E6TA IC LED DRVR WHITE BCKLGT SOT23-6
0-1005447-1 SENSOR PIEZO FILM VIBRA MASS
0035.1272 HOLDER LED SRL 5MM YELLOW
0035.4208 LED REFLECT INTERNAL 24V 3MM GRN
0035.7023 HOLDER LED PBL 3MM GREEN
0035.9617 HOLDER WITHOUT LED 3MM 8PLACE
相关代理商/技术参数
ZXLD40 制造商:OMRON AUTOMATION AND SAFETY 功能描述:SENS HEAD RFLECTV SPOT BEAM 40MM 制造商:Omron Electronic Components LLC 功能描述:Smart Sensor 11-Pin 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:DIFFUSE RFLCT SPOT BEAM 40mm
ZX-LD40 功能描述:光电传感器 DIFFUSE RFLCT SPOT BEAM 40mm RoHS:否 制造商:Omron Industrial 感应方式:Retroreflective 感应距离:2 m 光源:Infrared LED 放大器类型: 连接:Prewired Cable 输出配置:Light ON
ZXLD-40 制造商:Omron Corporation 功能描述:DIFFUSE RFLCT SPOT BEAM 40mm
ZXLD40L 制造商:OMRON AUTOMATION AND SAFETY 功能描述:SENS HEAD RFLECTV LINE BEAM 40MM 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:DIFFUSE RFLCT LINE BEAM 40mm
ZX-LD40L 功能描述:光电传感器 DIFFUSE RFLCT LINE BEAM 40mm RoHS:否 制造商:Omron Industrial 感应方式:Retroreflective 感应距离:2 m 光源:Infrared LED 放大器类型: 连接:Prewired Cable 输出配置:Light ON
ZX-LD40L 2M 制造商:OMRON AUTOMATION AND SAFETY 功能描述:DIFFUSE RFLCT LINE BEAM 40MM 制造商:Omron Electronic Components LLC 功能描述:Diffuse RFLCT L ine Beam 40mm 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:DIFFUSE RFLCT LINE BEAM 40MM
ZXLD40L2M 制造商:OMRON AUTOMATION AND SAFETY 功能描述:DIFFUSE RFLCT LINE BEAM 40MM
ZX-LDA11 2M 功能描述:磁传感器开发工具 SMART SENSOR AMPLIFI ER NPN OUT RoHS:否 制造商:Maxim Integrated 工具用于评估: 接口类型: 工作电压: