飞兆FAN5336白光LED电源解

飞兆FAN5336白光LED电源解决方案

飞兆半导体公司的FAN5336高频升压转换器能得到87%的系统效率和低的EMI水平,特别适合用在小型 LCD偏压电源和白光LED背景光电源.开关频率1.5MHz,输出电压从9V到33V,IC内部集成了N沟MOSFET开关,采用3x3x0.6mm UMLP封装.FAN5366广泛应用于手持显示器,手机/智能手机LED背景光,显示器偏压,PDA,DVD和摄像机的背景光,寻呼机和无绳电话显示器,手提医疗设备,遥控设备,MP3,PMP和DSC播放器以及串行闪光LED驱动器等.本文提供了FAN5336的主要性能,方框图以及应用电路.

The new FAN5336 high-frequency integrated boost converter from Fairchild Semiconductor (NYSE: FCS) allows designers to achieve a remarkable 87 percent system efficiency, low EMI and board space savings in a wide range of small LCD bias supply and white LED backlight designs. This 1.5MHz switching boost converter features a wide output-voltage range (9-33V) and integrates a switching NFET into an ultra-thin-profile, molded leadless package (UMLP) that measures only 3 x 3 x 0.6mm. Smaller than SOT-packaged devices typically used in these applications, the FAN5336 offers more functionality including higher peak current (1.5A) than similar 1.0A devices, as well as excellent line and load regulation (0.2 percent) and high switching frequency (1.5MHz). As a result, the FAN5336 helps to minimize noise, heat generation and emissions in cell and smart phones, MP3 players, medical devices and many other portable applications. Additionally, the converter’s high frequency allows the use of smaller components, helping designers maximize board space while easing design complexity.

“Fairchild’s FAN5336 is an excellent choice as an all-purpose boost converter for a variety of display applications,” said Bruno Kranzen, Ultra-Portable Product Line director for Fairchild. “Designers will find this device especially beneficial in today’s small LCD bias supplies and white LED backlight supply applications that require an input range of 2.7V to 5.5V. In these designs, FAN5336 delivers 87 percent efficiency by providing at least 100mA load current into an output rail set between 9V to 21V, and 50mA current into an output as high as 33V.” Kranzen continued: “Fairchild developed the FAN5336 to offer designers another option in our growing portfolio of integrated boost converter solutions that cover a broad range of applications. Other products include the FAN5331 and FAN5332 with 20V and 30V output voltages, respectively.”

FAN5336 1.5MHz Boost Regulator with 33V Integrated FET Switch
主要特性:

■ 1.5MHz Switching Frequency
■ Low Noise
■ Adjustable Output Voltage
■ Up to 1.5A Peak Switch Current
■ Low Shutdown Current: <1μA
■ Cycle-by-Cycle Current Limit
■ Over-Voltage Protection at the Feedback Pin
■ Fixed-Frequency PWM Operation
■ Soft-Start Capability
■ Internal Compensation
■ Thermal Shutdown
■ Excellent Load Regulation: 0.2%
■ Low Ripple
■ 6-Lead 3x3mm MLP
应用:
■ Portable Displays
■ Mobile Phone / Smart Phone LED Backlights
■ Display Bias
■ PDA, DVD, Camcorder Backlights
■ Pager and Cordless Phone Displays
■ Portable Medical Diagnostic Equipment
■ Remote Controls
■ MP3 or PMP or DSC Players
■ Serial Flash LED Drivers