电流模式和固定频率升压转换器CXSU63169串联驱动8个白色LED固定1MHz开关频率效率高达87%脉宽调制亮度控制频率 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
目录7.相关产品 产品概述 返回TOP The CXSU63169A/B/C is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 8 white LEDs in series. The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and feedback voltage reduce power loss and achieve high efficiency. Fast 1MHz current-mode PWM operation is available for input and output capacitors and a small inductor while minimizing ripple on the input supply. The OVP pin monitors the output voltage and stops switching if exceeds the over-voltage threshold. An internal softstart circuit eliminates the inrush current during start-up. The CXSU63169A/B/C also integrates under-voltage lockout, over-temperature protection, and current-limit circuits. The CXSU63169/A/B/C is available in a SOT-23-6 packages.产品特点 返回TOP z Wide Input Voltage from 2.7V to 6V z 0.25V Reference Voltage z Fixed 1MHz Switching Frequency z High Efficiency up to 87% z 100Hz to 100kHz PWM Brightness Control Frequency z Open‐LED Protection z Under‐Voltage Lockout Protection z Over‐Temperature Protection z<1mA Quiescent Current Dduring Shutdown z SOT‐23‐6 Packages z Lead Free and Green Devices Available z (RoHS Compliant) 应用范围 返回TOP z White LED Display Backlighting z Cell Phone and Smart Phone z PDA, PMP, MP3 z Digital Camera 技术规格书(产品PDF) 返回TOP 需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持!
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