4-Channels HB-LED Driver with High Voltage DC-DC Controller CXLE81111 is an integrated HB-LED backlight driver that controls 4 channels of LED current for LCD backlight applications such as LCD TV and

发布时间:2020-04-06 09:43:38 浏览次数:723 作者:嘉泰姆
摘要:4-Channels HB-LED Driver with High Voltage DC-DC Controller CXLE81111 is an integrated HB-LED backlight driver that controls 4 channels of LED current for LCD backlight applications such as LCD TV and

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The CXLE81111 is an integrated HB-LED backlight driver that controls 4 channels of LED current for LCD backlight applications such as LCD TV and LCD monitor. The CXLE81111 is capable for driving 20mA to 150mA white LEDs. The CXLE81111’s 4 channels of voltage controlled current sinks with 2% current matching compensate for the non-uniformity effect of forward voltage variance in the LED stacks. To minimize the voltage headroom and power loss in the typical multi-strings operation, the CXLE81111 monitors the total highest LED forward voltage string and uses its feedback signal for output regulation. A SETI pin is used for programming maximum LED current. A high contrast ratio true PWM dimming can be achieved by driving DIM pin with a PWM signal. LED current is proportional to the DIM pin duty. The CXLE81111 features extensive protection functions that include OLP, SLP, OCP, OVP and OTP. It is available in a TSSOP-20 (FD) package.

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„ 4 Channels 6Md嘉泰姆

„ Drive 20mA to 150mA Each Channel 6Md嘉泰姆

„ 100Hz to 25kHz Dimming Frequency 6Md嘉泰姆

„ Current Mode Boost Controller 6Md嘉泰姆

„ 10V to 30V Input Supply 6Md嘉泰姆

„ 50kHz to 2MHz Programmable Switching Frequency 6Md嘉泰姆

„ External Switching Frequency Synchronization 6Md嘉泰姆

„ Current Matching 2% 6Md嘉泰姆

„ Highest Vf String Detection for Regulation 6Md嘉泰姆

„ Protections: 6Md嘉泰姆

Š Open LED Protection (OLP) 6Md嘉泰姆

Š Short LED Protection (SLP) 6Md嘉泰姆

Š Switch Over Current Protection (OCP) 6Md嘉泰姆

Š Output Over Voltage Protection (OVP) 6Md嘉泰姆

Š Over Temperature Protection (OTP) 6Md嘉泰姆

„ TSSOP-20 (FD) Package 6Md嘉泰姆

„ RoHS Compliant6Md嘉泰姆

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„ LCD TV LED Backlighting 6Md嘉泰姆

„ LCD Monitor LED Backlighting6Md嘉泰姆

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