目录
产品概述 返回TOPvc8嘉泰姆
The CXLE8185 is a high performance white LED driver. It integrates current sources and automatic mode selection charge pump. The part maintains the high efficiency by utilizing a 1×/1.5× fractional charge pump and low dropout current sources. The small equivalent 1× mode open loop resistance and ultra-low dropout voltage of current source extend the operating time of 1× mode and optimize the efficiency of Li-ion battery in white LED applications.vc8嘉泰姆
vc8嘉泰姆
The CXLE8185 supports up to 8 white LEDs and regulates a constant current which the initial value can be set by an internal resistor. The part implements PWM dimming to adjust the brightness of LED. Users can easily configure the LED current from 0mA to 27mA by a digital PWM signal. CXLE8185 can be turned off by EN pin. The operating voltage range is 2.7V to 5.5V. Internal soft-start circuitry effectively reduces the in-rush current while both start-up and mode transition.vc8嘉泰姆
vc8嘉泰姆
The CXLE8185 is available in Green TQFN-3×3-20L package and is rated over the -40℃</span> to +85℃</span> temperature range.vc8嘉泰姆
产品特点 返回TOPvc8嘉泰姆
• Input Voltage Range: 2.7V to 5.5V
• Drives up to 8 LEDs at 27mA Each
• PWM Dimming
• High Efficiency by Fractional Conversion with
1× and 1.5× Modes
• Switching Frequency: 0.93MHz
• Regulated Output Current with ±4.8% Matching
• Internal Soft-Start Limits Inrush Current
• Low Input Ripple and Low EMI
• Over-Current and Over-Temperature Protection
• Under-Voltage Lockout with Hysteresis
• Available in Green TQFN-3×3-20L Packagevc8嘉泰姆
应用范围 返回TOPvc8嘉泰姆
Mobile Phone, DSC, MP3
White LED Backlighting
LCD Display Supplyvc8嘉泰姆
技术规格书（产品PDF) 返回TOP vc8嘉泰姆
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</span>！</span>
vc8嘉泰姆
vc8嘉泰姆
产品封装图 返回TOPvc8嘉泰姆
vc8嘉泰姆
电路原理图 返回TOPvc8嘉泰姆
vc8嘉泰姆
vc8嘉泰姆
vc8嘉泰姆
白光LED驱动器</span>vc8嘉泰姆 |
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