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| 型号： | ZXLD1322DCCTC |
| 厂商： | Diodes Inc |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR WHITE BCKLGT 14-DFN |
| 特色产品： | LED Driver Solutions |
| 标准包装： | 1 |
| 拓扑： | PWM，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 闪灯/白光，通用 |
| 类型 - 次要： | 高亮度 LED（HBLED），白色 LED |
| 频率： | 600kHz |
| 电源电压： | 2.5 V ~ 15 V |
| 输出电压： | 18V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-VFDFN 裸露焊盘 |
| 供应商设备封装： | 14-DFN-EP（4x3） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 125°C |
| 产品目录页面： | 1478 (CN2011-ZH PDF) |
| 其它名称： | ZXLD1322DCCDKR |
A Product Line of
Diodes Incorporated
ZXLD1322
BUCK/BOOST MODE DC-DC CONVERTER FOR LED DRIVING WITH 700mA OUTPUT AND CURRENT
CONTROL
Description
The ZXLD1322 is an inductive DC-DC converter, with an internal switch, designed for driving single or multiple LEDs in
series up to a total of 700mA output current. Applications cover input voltages ranging from 2.5V to 15V. Depending upon
supply voltage and external components, this can provide up to 12W of output power. The device employs a variable 'on'
and 'off' time control scheme with adjustable peak switch current limiting and operates in Buck/Boost mode, offering higher
power efficiency and lower system cost than conventional PFM buck/boost circuitry. The device includes the DC-DC
converter, a high-side current monitor and an NPN switching transistor to provide an integrated solution offering small PCB
size, competitive cost/performance, high power efficiency of DC-DC conversion and maximum LED brightness/reliability.
More importantly, it retains design flexibility to add customer specific features. The feedback control circuitry inside the
ZXLD1322 provides excellent load and current regulation, resulting in very stable LED current over the useful life of the
battery and over the full operating temperature range. The LED current can be adjusted from 100% down to 10% of the set
value by applying a dc voltage to the ADJ pin and down to 1% by applying a PWM signal. An on-chip LED protection circuit
also allows output current to be reduced linearly above a predetermined threshold temperature using an external thermistor
at the TADJ pin. External resistors set nominal average LED current and coil peak current independently. The device can
be shut down by applying a continuous low level dc voltage to the ADJ pin.
Features
Pin Assignments
Typical efficiency >80%
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2.5V to 15V Input Voltage Range
Up to 700mA output current
#
User-defined thermal control of LED
output current using external thermistor
High output current stability over input
voltage and temperature
12 μ A typical standby current
LED current adjustable from 100%
down to 2%
Adjustable Soft-Start
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Capable of driving 3 LEDs in series
(Top View)
Applications
DFN4030-14 with Exposed Pad
4mm x 3mm
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High power LED flashlights
LED back-up lighting
General LED lighting
0.50mm pitch
1.5W @ T A = 70°C
Typical Application Circuit
DFN4030-14 Package(Bottom View)
45° chamfer denote Pin 1
Notes:
#. Using standard external components as specified under electrical characteristics. Efficiency is dependent upon external component types and
values. Higher efficiency is possible with alternative coils.
ZXLD1322
Document number: DS32166 Rev. 3 - 2
1 of 17
www.diodes.com
April 2010
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| ZXLD1350ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| ZXLD1352ET5TA | IC LED DRIVER HIGH BRIGHT TSOT-5 |
| ZXLD1356DACTC | IC LED DRIVER WHITE BCKLGT 6-DFN |
| ZXLD1360ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| ZXLD1362ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXLD1322DCCTC-CUT TAPE | 制造商:DIODES 功能描述:ZXLD1322 Series 15 V 600 kHz 700 mA Buck/Boost Mode DC-DC Converter - DFN-14 |
| ZXLD1322DCTC | 制造商:ZETEX 制造商全称:ZETEX 功能描述:Buck/boost mode DC-DC converter for LED driving with 700mA output and current control |
| ZXLD1350 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:350mA LED driver with internal switch |
| ZXLD1350_07 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:350mA LED driver with internal switch |
| ZXLD1350ET5 | 制造商:Diodes Incorporated 功能描述:LED DRIVER INTERNAL SWITCH SMD 制造商:Diodes Incorporated 功能描述:LED DRIVER, INTERNAL SWITCH, SMD 制造商:Diodes Incorporated 功能描述:IC, LED DRIVER, BUCK, TSOT-23-5; Topology:Buck (Step Down); No. of Outputs:1; Output Current:350mA; Output Voltage:30V; Driver Case Style:TSOT-23; Input Voltage Min:7V; Input Voltage Max:30V; Dimming Control Type:PWM / DC ;RoHS Compliant: Yes |
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