• [ CXLE8195 ]

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1.产品概述       2.产品特点     qBY嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）qBY嘉泰姆

5.产品封装       6.电路原理图  qBY嘉泰姆

7.相关产品qBY嘉泰姆

   产品概述 返回TOPqBY嘉泰姆

With a 40V rated integrated switch FET, the CXLE8195 is a boost converter that drives LEDs in series. The boost converter has a 40V, 3A internal MOSFET; thus it can drive single or parallel LED strings for small to large size panel backlighting. And it is quite suitable for smart phone image capture using display device as a flash mode light source, as it can output up to 200mA current at 30V for 320ms when the strobe signal is active.The backlight mode default white LED current is set with the external sensor resistor, RSET, and the feedback voltage is regulated to 200mV, as shown in the typical application. During the operation, the LED current can be controlled by a pulse width modulation (PWM) signal applied to the CTRL pin, through which the duty cycle determines the feedback reference voltage. The CXLE8195 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 CXLE8195 to prevent the output voltage from exceeding the IC absolute maximum voltage ratings during open LED conditions.When the device is working, if the STROBE pin is pulled up, it will turn on flash mode within 100μs. And the feedback voltage is regulated to 5× of the backlight mode that determined by the PWM signal duty cycle. And it will turn to backlight mode within 100μs when the STROBE pin is pulled down or the strobe signal keeps high over the 320ms timer.The CXLE8195 is available in Green TDFN-2×2-6L package. It operates over an ambient temperature range of -40℃ to +85℃.

   产品特点 返回TOPqBY嘉泰姆

• Input Voltage Range: 2.7V to 5.5VqBY嘉泰姆

• Integrated 3A/40V MOSFETqBY嘉泰姆

• Output Voltage Up to 38V (OVP)qBY嘉泰姆

• Output Current Up to 200mA @ 30VqBY嘉泰姆

• Accumulated 320ms Flash Timer ControlqBY嘉泰姆

• 1.2MHz Switching FrequencyqBY嘉泰姆

• PWM Dimming Control InterfacesqBY嘉泰姆

• PWM Frequency: 20kHz ~ 100kHzqBY嘉泰姆

• Strobe Interface for Image Capture ModeqBY嘉泰姆

• Up to 87% Efficiency for 7S2P LEDsqBY嘉泰姆

• Up to 92% Efficiency for 3S20P LEDsqBY嘉泰姆

• Dimming Stable in 1:500 RangeqBY嘉泰姆

• 200mV Feedback Voltage in Backlight ModeqBY嘉泰姆

• 1000mV Feedback Voltage in Flash ModeqBY嘉泰姆

• Built-In Soft-Start FunctionqBY嘉泰姆

• Over-Voltage ProtectionqBY嘉泰姆

• Built-In WLED Open/Short ProtectionqBY嘉泰姆

• PFM Mode at Light LoadqBY嘉泰姆

• Thermal ShutdownqBY嘉泰姆

• -40℃ to +85℃ Operating Temperature RangeqBY嘉泰姆

• Available in Green TDFN-2×2-6L PackageqBY嘉泰姆

   应用范围 返回TOPqBY嘉泰姆

Smart phonesqBY嘉泰姆

PDAs, Handheld ComputersqBY嘉泰姆

Backlight for Small and Medium Form-Factor LCD Display with Single-Cell Battery InputqBY嘉泰姆

   技术规格书（产品PDF) 返回TOP qBY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！qBY嘉泰姆

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产品封装图 返回TOPqBY嘉泰姆

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电路原理图 返回TOPqBY嘉泰姆

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◀ 上一篇:CXLE8194多功能恒流LED驱动器高效的升压转换器结构低功耗MOSFET驱动高达38V的输出10个LED串联260毫安的总电流每个串3个系列的LED高效的PWM转换器

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下一篇▶:CXLE8198高效恒流20V白光升压转换器驱动恒定电流的白色LED快速1.0兆赫电流模式的PWM控制允许电容和电感数字调光控制内置循环电流限制

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