参数资料
型号: ZXLD1321DCATC
厂商: Diodes Inc
文件页数: 12/20页
文件大小: 0K
描述: IC LED DRVR WHITE BCKLGT 14-TDFN
特色产品: LED Driver Solutions
标准包装: 1
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 闪灯/白光
类型 - 次要: 高亮度 LED(HBLED),白色 LED
频率: 600kHz
电源电压: 2 V ~ 12 V
输出电压: 18V
安装类型: 表面贴装
封装/外壳: 14-TDFN 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: ZXLD1321DCADKR
ZXLD1321
Fig 1
PWM control
A wider dimming range can be achieved by applying a PWM control signal to the ADJ pin to turn
the device on and off, giving an average output current proportional to the duty cycle of the
control signal. The ADJ pin can be driven directly from the open drain NMOS output of a
microcontroller, or indirectly with a low saturation voltage NPN transistor such as the Zetex
ZXTN25015DFH. (Fig 2).
ADJ
ZXTN25015DFH
Fig 2
In the circuit of Fig 4, the average LED output current will be
I LED ( avg ) = I LED ( nom ) * D
Where duty cycle
ZXLD1321
D =
T 2
( T 1 + T 2 )
A PWM frequency of 200Hz, or lower is recommended, to minimize errors due to the rise and fall
times of the converter output.
Issue 1 - January 2008
? Zetex Semiconductors plc 2008
12
www.zetex.com
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相关代理商/技术参数
参数描述
ZXLD1322 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:BUCK/BOOST MODE DC-DC CONVERTER
ZXLD1322DCCTC 功能描述:直流/直流开关转换器 Buck-Boost DC-DC Con 0.7A output RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
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