CXLE86238 is an efficient buck constant current LED driver based on synchronous rectification technology, designed specifically for industrial and automotive lighting systems optimization. The chip supports a wide input voltage range of 5V~45V, and can flexibly drive 1-9 strings of LED light groups. With 94% ultra-high conversion efficiency and 2A continuous output capability, it significantly reduces system temperature rise and meets the high power density requirements of 10W level.
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[ CXLE86238 ]"
CXLE86238 It is an efficient buck constant current LED driver based on synchronous rectification technology, designed specifically for optimizing industrial and automotive lighting systems. Chip support5V~45V ultra wide input voltage range, can flexibly drive 1-9 strings of LED light groups, matched with94% ultra-high conversion efficiencyand2A continuous output capabilitySignificantly reduce system temperature rise and meet the demand for 10W high power density.
Core performance advantages
✅& nbsp;Intelligent constant current control
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Adopting a constant 150KHz switching frequency, coupled with 0.23V high-precision current sampling (precision±); 4%), achieve± 2% load adjustment rate
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Support maximum 90% duty cycle output, suitable for low voltage drop scenarios (such as battery powered equipment)
✅& nbsp;integrated design
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Built in power MOSFET and loop compensation module, reducing peripheral components to less than 6, SOP8 package saves 60% PCB area
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EN pin supports TTL level on/off control, simplifying system power management logic
✅& nbsp;Industrial grade reliability
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Triple protection mechanism: thermal shutdown (-40 ℃~125 ℃), output current limiting, Class 3A ESD protection (± 2000V HBM)
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Passed AEC-Q100 Grade 1 certification, suitable for harsh environments
Typical application scenarios
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Vehicle lighting system
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Daytime running lights/taillights drive
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Multi channel control of ambient lighting in the car
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industrial equipment
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Machine status indicator light
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Outdoor advertising screen constant current backlight
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portable device
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Drone searchlight power supply
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Mobile workstation high brightness lighting
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Parameter Comparison Table (Competitive Differentiation Highlights)
| feature | CXLE86238 | conventional solution |
|---|---|---|
| Input voltage range | 5V-45V | 12V-36V |
| Maximum duty cycle | 90% | 75% |
| Efficiency @ 2A load | 94% | 88% |
| protection function | Thermal shutdown+current limiting+ESD Class3A | Single over temperature protection |
| Number of peripheral components | &Le; 6 | ≥ 10 |
Design suggestions
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Thermal management optimizationWhen operating at full load of 10W, it is recommended to reserve 15mm for PCB; Copper foil heat dissipation area
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Wiring specificationsControl the length of SW pin routing within 5mm to reduce EMI interference
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Selection and adaptationWhen driving 9 strings of LEDs, it is necessary to ensure Vin≥ (Vf_LED× 9)+0.3V (0.3V is the minimum pressure difference)
Through fully integrated design and industrial grade reliability, CXLE86238 provides LED driver systems withEfficient, streamlined, and highly robustThe solution.
Technical Specifications (Product PDF);
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Bill of Materials
DEMO physical image
PCB layout
Typical performance curve
Application Information
PCB Layout Guide
1. Power lines such as VIN, GND, SW, VOUT, etc., thick, short, and straight;
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;
3. Input the positive electrode of the electrolytic capacitor close to the VIN and GND pins of the chip.
Selection Guide for Related Chips
| model | Product features | power | input voltage | frequency | Switching current | Constant current accuracy | efficiency | output voltage | reference voltage | encapsulation |
| CXLE8601 | High voltage boost constant current, enable | 8W | 3.6~24V | 400KHz | 2A | ± 5% | 92% | ADJ(5~32V) | 0.22V | SOP8 |
| CXLE8602 | High voltage boost constant current, enable | 8W | 3.6~24V | 400KHz | 2A | ± 5% | 92% | ADJ(5~60V) | 0.22V | SOP8 |
| CXLE8603 | High voltage boost constant current, enable | 8W | 5~40V | 400KHz | 2A | ± 3% | 95% | ADJ(8~60V) | 0.22V | SOP8 |
| CXLE8604 | High voltage boost constant current, enable | 20W | 3.6~32V | 180KHz | 4A | ± 5% | 93% | ADJ(5~60V) | 0.22V | TO252-5L |
| CXLE8605 | High voltage boost constant current, enable | 50W | 5~32V | 180KHz | 5A | ± 5% | 93% | ADJ(8~60V) | 0.22V | TO263-5L |
| CXLE8609 | Voltage reduction and constant current | 12W | 8~40V | 220KHz | 3A | ± 3% | 97% | ADJ(0.21~37V) | 0.21V | SOP8-EP |
| CXLE8610 | Voltage reduction and constant current | 30W | 8~36V | 220KHz | 4A | ± 3% | 97% | ADJ(0.21~33V) | 0.21V | TO252-5L |
| CXLE8611 | Voltage reduction and constant current, high power | 50W | 8~36V | 220KHz | 5A | ± 3% | 97% | ADJ(0.21~33V) | 0.21V | TO263-5L |
| CXLE8609A | Voltage reduction and constant current | 12W | 8~45V | 220KHz | 3A | ± 3% | 97% | ADJ(0.21~33V) | 0.21V | SOP8-EP |
| CXLE8612 | High voltage step-down constant current | 50W | 12~100V | PFM | 1A | ± 4% | 98% | ADJ(3~60V) | 0.1V | TO263-5L |
| CXLE8614 | High voltage step-down constant current | 8W | 24~100V | PFM | 0.5A | ± 5% | 96% | ADJ(8~26V) | 0.2V | SOP8 |
| CXLE86231 | High voltage step-down constant current | 12W | 8~60V | 220KHz | 1.5A | ± 3% | 95% | ADJ(0.21~40V) | 0.21V | SOP8-EP |
| CXLE86232 | Voltage reduction synchronous rectification constant current drive | 10W | 5~45V | 200KHz | 2A | ± 4% | 95% | ADJ | 0.23V | SOP8 |
| CXLE86233 | Voltage reduction synchronous rectification constant current drive | 15W | 5~45V | 200KHz | 3A | ± 4% | 95% | ADJ | 0.23V | SOP8-EP |
| CXLE86234 | Voltage reduction synchronous rectification constant current drive | 30W | 5~45V | 200KHz | 4A | ± 4% | 95% | ADJ | 0.23V | TO252-5L |
| CXLE86235 | Voltage reduction synchronization, constant current, high power | 50W | 5~45V | 200KHz | 5A | ± 4% | 95% | ADJ | 0.23V | TO263-5L |
| CXLE86236 | Voltage reduction synchronization, constant current, high power | 80W | 5~45V | 200KHz | 6A | ± 4% | 95% | ADJ | 0.23V | TO220-5L |
| CXLE86237 | Voltage reduction synchronization, constant current | 30W | 5~45V | 150KHz | 4A | ± 4% | 97% | ADJ | 0.23V | TO252-5L |
| CXLE86238 | Voltage reduction synchronization, constant current, enable | 10W | 5~45V | 150KHz | 2A | ± 4% | 94% | ADJ | 0.23V | SOP8 |
| CXLE86239 | Voltage reduction synchronization, constant current, enable | 15W | 5~45V | 150KHz | 3A | ± 4% | 95% | ADJ | 0.23V | SOP8-EP |
| CXLE86240 | Voltage reduction, high voltage synchronization, constant current | 5W | 5~90V | 150KHz | 0.6A | ± 3% | 93% | ADJ | 0.22V | SOP8 |
| CXLE86241 | Voltage reduction, high voltage synchronization, constant current | 15W | 5~90V | 150KHz | 1.5A | ± 3% | 93% | ADJ | 0.22V | TO252-5L |
| CXLE86242 | Voltage reduction, high voltage synchronization, constant current, high power | 25W | 5~90V | 150KHz | 2A | ± 3% | 93% | ADJ | 0.22V | TO263-5L |
| CXLE86243 | Voltage reduction, high voltage synchronization, constant current, high power | 30W | 5~90V | 150KHz | 2A | ± 3% | 93% | ADJ | 0.22V | TO220-5L |
| CXLE86244 | Voltage reduction synchronization, constant current, enable | 10W | 5~45V | 200KHz | 2A | ± 3% | 93% | ADJ | 0.23V | SOP8 |
| CXLE86245 | Voltage reduction synchronization, constant current, enable | 15W | 5~45V | 200KHz | 3A | ± 3% | 93% | ADJ | 0.23V | SOP8-EP |
| CXLE86246 | Boost constant current, built-inSBDrectification | 2W | 2.5~20V | 1.2MHz | 0.5A | ± 3% | 85% | 1~10S | 0.2V | SOT23-6 |
| CXLE86247 | Boost constant current, built-inSBDRectification and supportSEPIC | 6W | 2.5~25V | 1.2MHz | 1.0A | ± 3% | 88% | 1~8S | 0.2V | SOP8-EP |
| CXLE86248 | Boost constant current, built-inSBDRectification and supportSEPIC | 4W | 2.5~25V | 1.2MHz | 0.6A | ± 3% | 87% | 1~10S | 0.2V | DFN3*3-8 |
| CXLE86249 | Boost constant current, built-inSBDRectification and supportSEPIC | 6W | 2.5~25V | 1.2MHz | 1.0A | ± 3% | 88% | 1~8S | 0.2V | DFN3*3-8 |
