目录

1.产品概述       2.产品特点     aIF嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）aIF嘉泰姆

5.产品封装       6.电路原理图  aIF嘉泰姆

7.相关产品aIF嘉泰姆

   产品概述 返回TOPaIF嘉泰姆

With a 40V rated integrated switch FET, the CXLE87127 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 CXLE87127 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 CXLE87127 to prevent the output voltage from exceeding the IC absolute maximum voltage ratings during open LED conditions.aIF嘉泰姆

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.aIF嘉泰姆

The CXLE87127 is available in Green TDFN-2×2-6L package. It operates over an ambient temperature range of -40℃ to +85℃.aIF嘉泰姆

   产品特点 返回TOPaIF嘉泰姆

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

• Integrated 3A/40V MOSFETaIF嘉泰姆

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

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

• Accumulated 320ms Flash Timer ControlaIF嘉泰姆

• 1.2MHz Switching FrequencyaIF嘉泰姆

• PWM Dimming Control InterfacesaIF嘉泰姆

• PWM Frequency: 20kHz ~ 100kHzaIF嘉泰姆

• Strobe Interface for Image Capture ModeaIF嘉泰姆

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

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

• Dimming Stable in 1:500 RangeaIF嘉泰姆

• 200mV Feedback Voltage in Backlight ModeaIF嘉泰姆

• 1000mV Feedback Voltage in Flash ModeaIF嘉泰姆

• Built-In Soft-Start FunctionaIF嘉泰姆

• Over-Voltage ProtectionaIF嘉泰姆

• Built-In WLED Open/Short ProtectionaIF嘉泰姆

• PFM Mode at Light LoadaIF嘉泰姆

• Thermal ShutdownaIF嘉泰姆

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

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

   应用范围 返回TOPaIF嘉泰姆

Smart phonesaIF嘉泰姆

PDAs, Handheld ComputersaIF嘉泰姆

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

   技术规格书（产品PDF) 返回TOP aIF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！aIF嘉泰姆

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产品封装图 返回TOPaIF嘉泰姆

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电路原理图 返回TOPaIF嘉泰姆

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