White LED Driver with PWM Brightness Control in Small Packages With a 40V rated integrated switch FET, the CXLE8189 is a boost converter that drives up to 10 LEDs in series

   产品概述 返回TOPtUM嘉泰姆

With a 40V rated integrated switch FET, the CXLE8189 is a boost converter that drives up to 10 LEDs in series. The boost converter runs at a 1.2MHz fixed switching frequency with 1.1A switch current limit, and allows for the use of a high brightness LED in general lighting.tUM嘉泰姆

tUM嘉泰姆

The default white LED current is set with the external sensor resistor R_SET, and the feedback voltage is regulated to 200mV, as shown in the typical application. During the operation, the LED current can be controlled using PWM signal through the CTRL pin, the pulse width modulation (PWM) signal determines the feedback reference voltage. In PWM mode, the CXLE8189 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the CXLE8189 to prevent the output voltage from exceeding the IC’s absolute maximum voltage ratings during open LED conditions.tUM嘉泰姆

tUM嘉泰姆

The CXLE8189 is available in Green TDFN-2×2-6L and TSOT-23-6 packages. It operates over an ambient temperature range of -40℃</span> to +85℃</span>.tUM嘉泰姆

   产品特点 返回TOPtUM嘉泰姆

• Input Voltage Range: 3V to 20V
• 38V Open LED Protection for 10 LEDs
• 200mV Reference Voltage
• 500kΩ Pull-Low Resistor on CTRL Pin
• 1.1A Switch FET with 1.2MHz Switching Frequency
• PWM Brightness Control
• 1kHz to 100kHz PWM Dimming Frequency Range
• Soft-Start Function
• Up to 90% Efficiency
• -40℃</span> to +85℃</span> Operating Temperature Range
• Available in Green TDFN-2×2-6L and TSOT-23-6
   PackagestUM嘉泰姆

   应用范围 返回TOPtUM嘉泰姆

High Brightness LED Lighting
White LED Backlighting for Media Form Factor DisplaytUM嘉泰姆

   技术规格书（产品PDF) 返回TOP tUM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>
tUM嘉泰姆