The CXLE8122 is a step-up DC/DC converter specifically designed to drive up to 5 series white LEDs with constant current. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminates the need for ballast resistors. The CXLE8122 switches at 1.4MHz, allowing the use of tiny external components. A low 0.25V feedback voltage minimizes power loss in the current setting resistor for high efficiency. The OVP pin monitors the output voltage and turns off the converter whenever the LEDs are open.
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The CXLE8122 is a step-up DC/DC converter specifically designed to drive up to 5 series white LEDs with constant current. Series connection of the LEDs provides identical LED currents resulting
目录
产品概述 返回TOP
The CXLE8122 is a step-up DC/DC converter specifically designed to drive up to 5 series white
LEDs with constant current. Series connection of the LEDs provides identical LED currents
resulting in uniform brightness and eliminates the need for ballast resistors. The CXLE8122
switches at 1.4MHz, allowing the use of tiny external components. A low 0.25V feedback voltage minimizes power loss in the current setting resistor for high efficiency. The OVP pin monitors the output voltage and turns off the converter whenever the LEDs are open.
The CXLE8122 is available in low profile SOT-23-6 package.
产品特点 返回TOP
Inherently Matched LED Current
High Efficiency:82%
Drives Up to Five LEDs from 2.2V Supply
17V Over Voltage Protection
Fast 1.4MHz Switching Frequency
Requires Only
1μF Output Capacitors
SOT-23-6 Packag
应用范围 返回TOP
Communication equipment
White LED Backlight Display for PDA
Pocket PC
Handheld Devices
Cellular Phones
White LED display backlighting
技术规格书（产品PDF) 返回TOP
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！
产品封装图 返回TOP
电路原理图 返回TOP
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PWM |
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20KHz-1MHz |
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PWM |
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22V |
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5uA |
1MHz |
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SOT-26 |
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PWM |
3.0V-6.0V |
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1.2MHz |
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