• [ CXLE86239 ]"

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CXLE86239  It is a high-performance buck constant current LED driver using synchronous rectification technology, designed specifically for high power density scenarios. support5V~45V ultra wide input voltage rangeIt can drive 1-9 strings of LED light groups,95% ultra-high conversion efficiencycombine3A continuous output capabilityMeet the high-power lighting requirements of 15W level and significantly reduce system heat loss.AT4嘉泰姆
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Core performance advantages

✅& nbsp;Efficient output architectureAT4嘉泰姆

• Constant 150KHz switching frequency, paired with 0.23V high-precision current sampling (± 4% accuracy), to achieve± 2% load/linear adjustment rateAT4嘉泰姆

• Support maximum 90% duty cycle output, suitable for low voltage drop scenarios of battery powered equipmentAT4嘉泰姆

✅& nbsp;Fully integrated designAT4嘉泰姆

• Built in power MOSFET and loop compensation module, reduced peripheral components to less than 5, SOP8-EP package (enhanced heat dissipation) saves 70% PCB spaceAT4嘉泰姆

• EN pin supports TTL level on/off control, simplifying system power managementAT4嘉泰姆

✅& nbsp;Triple security protectionAT4嘉泰姆

• Thermal shutdown protectionAutomatic monitoring of the entire temperature range from -40 ℃ to 125 ℃AT4嘉泰姆

• Intelligent current limiting protection3A output current dynamic limitingAT4嘉泰姆

• short circuit protectionAutomatically cut off output under abnormal loadAT4嘉泰姆

• Through Class 3A ESD protection (± 2000V HBM), the anti-interference ability meets industrial grade standardsAT4嘉泰姆

1. Display deviceAT4嘉泰姆

   • LCD display/LED large screen backlight driverAT4嘉泰姆

   • High brightness indicator light source for medical equipmentAT4嘉泰姆

2. industrial lightingAT4嘉泰姆

   • Factory assembly line operation lightAT4嘉泰姆

   • Intelligent Lighting System for Warehousing and LogisticsAT4嘉泰姆

3. General lightingAT4嘉泰姆

   • Commercial advertising lightboxAT4嘉泰姆

   • Architectural landscape lighting projectAT4嘉泰姆

Quick overview of key parameters

Design optimization suggestions

• thermal designWhen the output is 15W at full load, it is recommended to lay 20mm² at the bottom of the chip; Heat dissipating copper foilAT4嘉泰姆

• EMI suppressionSW pin routing length≤ 8mm, parallel RC absorption circuit (recommended 10Ω); +100pF）AT4嘉泰姆

• Multiple string LED configurationWhen driving 9 strings of LEDs, the following requirements must be met:Vin ≥ (Single LED voltage drop× 9) + 0.5VAT4嘉泰姆

passHigh efficiency, high integration, high reliabilityThe triple advantage of CXLE86239 provides industrial and consumer grade LED systemsHigh performance, low BOM costThe ultimate solution.AT4嘉泰姆
Bill of MaterialsAT4嘉泰姆
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DEMO physical imageAT4嘉泰姆
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PCB layoutAT4嘉泰姆
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Typical performance curveAT4嘉泰姆
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Application InformationAT4嘉泰姆
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PCB Layout GuideAT4嘉泰姆

1. Power lines such as VIN, GND, SW, VOUT, etc., thick, short, and straight;AT4嘉泰姆
2. CS wiring should be kept away from switch signals such as inductors, and it is recommended to use a ground wire to surround it;AT4嘉泰姆
3. Input the positive electrode of the electrolytic capacitor close to the VIN and GND pins of the chip.AT4嘉泰姆

Selection Guide for Related ChipsAT4嘉泰姆

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