CXLE8862是一款高度集成且经济高效的发光二极管（LED）驱动器，专为LCD显示器和LCD电视背光应用而优化。它提供了一个高性能的LED背光解决方案，以最小化BOM计数。CXLE8862包含一个使用电流模式控制和固定频率操作来调节LED电流的PWM升压驱动器。LED电流通过外部电流感测电阻器感测。将传感电阻上的电压与参考电压200mV进行比较，放大误差以控制电源开关的脉冲宽度，从而调节流过LED的电流。CXLE8862提供外部低频脉宽调制（LPWM）调光方法，用于广泛的调光控制。
CXLE8862提供全面的保护，如功率MOSFET过电流保护（OCP）、输出过电压保护（OVP）、IC电源欠电压锁定（UVLO）和LED开路保护。
动态响应良好的电流型PWM控制器
10V至35V输入电压范围
外部脉宽调制调光模式
过电压保护
过电流保护
欠压锁定（UVLO）
热关机
[ CXLE8862 ]
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产品概述 返回TOP
CXLE8862 is a highly integrated and cost effective Light Emitting Diode (LED) driver optimized for LCD monitor and LCD TV backlighting application. It provides a high performance LED backlight solution with minimized BOM count. The CXLE8862 contains a PWM boost driver which uses current mode control and fixed frequency operation to regulate the LED current. The LED current is sensed through an external current sense resistor. The voltage across the sensing resistor is compared with reference level of 200mV, the error is amplified to control the pulse width of the power switch thus to regulate the current flowing the LED. The CXLE8862 offers external low frequency PWM (LPWM) dimming method for a wide range of dimming control.
The CXLE8862 offers comprehensive protection such as power MOSFET over current protection (OCP), output over voltage protection (OVP), IC power supply under voltage lockout (UVLO), and LED open protection.
产品特点 返回TOP
Current Mode PWM Controller with Good Dynamic Response
10V to 35V Input Voltage Range
External PWM Dimming Mode
Over Voltage Protection
Over Current Protection
Under Voltage Lockout (UVLO)
Thermal Shutdown
应用范围 返回TOP
LCD Monitor
LCD TV
Flat panel display
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产品封装图 返回TOP
电路原理图 返回TOP
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升压型LED射灯驱动IC |
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型号 |
工作电压范围 |
输出电流 |
输出电流精度 |
工作频率 |
调光功能 |
封装 |
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0.9V-6.0V |
1A |
- |
90% |
1.0 MHz |
PWM调光 |
SOT-26 |
|
|
0.8V-5.5V |
外置MOS/15W |
3% |
90% |
700KHz |
PWM调光500Hz-1KHz |
SOT-26 |
|
|
3V-24V |
内置2A MOS |
2% |
90% |
1.2MHz |
PWM调光 |
SOT-26 |
|
|
2.7V-6.5V |
内置2.8A MOS |
2% |
90% |
1MHz |
PWM调光 |
SOT-26 |
|
|
2.5V-30V |
内置3A MOS |
2% |
90% |
460KHz |
模拟调光/PWM调光 |
SOP-8 |
|
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2.2V-6V |
内置3A MOS |
2% |
90% |
800KHz |
PWM调光 |
SOP-8 |
|
|
2.2V-6V |
内置3A MOS |
2% |
90% |
800KHz |
PWM调光 |
DFN3*3-8 |
|
|
10V-35V |
内置3A MOS |
2% |
90% |
800KHz |
PWM调光 |
SOP-8 |
|
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4.5V--24V |
1A |
2% |
90% |
800KHz |
PWM调光 |
ESOP8 |
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3.6V-26V |
2A |
2% |
92% |
400KHz |
PWM调光 |
SOP-8 |
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3.6V-26V |
2A |
2% |
92% |
400KHz |
PWM调光 |
SOP-8 |
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5V-45V |
2A |
2% |
93% |
400KHz |
PWM调光 |
SOP-8 |
|
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8V-32V |
内置8A MOS |
2% |
92% |
1MHz |
PWM调光 |
SOP-14 |
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8V-32V |
外置MOS/36W |
2% |
94% |
1MHz |
PWM调光 |
ESOP-8 |
|
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3.6V-36V |
4A |
2% |
94% |
180KHz |
PWM调光 |
TO252-5L |
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5.0V-36V |
5A |
2% |
94% |
180KHz |
PWM调光 |
TO-263-5L |
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◀ 上一篇:CXLE8861升压型DC/DC转换器有恒定电流驱动白光LED锂离子电池串联驱动8个LED可编程过电压保护LED电流由外部电阻器RSET设置由外部电阻器RSET上的反馈FB电压直接调节
下一篇▶:CXLE8863升压型LED的恒流驱动芯片输入电压从4.5V到24V驱动7颗1瓦LED 1A的限流保护PWM模拟调光采样电阻来设定LED电流 OV 引脚检测并控制输出电压
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