LM3414
- Supports LED Power up to 60 W(1): 18x 3-W
HBLEDs - RequiresNo External Current Sensing Resistor
- ±3% LED Current Accuracy
- Up to 96% Efficiency
- High Contrast Ratio (Minimum Dimming Current
Pulse Width <10 µS) - Integrated Low-Side N-Channel MOSFET
- Adjustable Constant LED Current From 350 mA to
1000 mA - Support Analog Dimming and Thermal Fold-Back
- Wide Input Voltage Range:
- 4.5 V to 42 V (LM3414)
- 4.5 V to 65 V (LM3414HV)
- Constant Switching Frequency Adjustable from
250 kHz to 1000 kHz - Thermal Shutdown Protection
- Power Enhanced SOIC-8 or 3 mm × 3 mm
WSON-8 Package
The LM3414 and LM3414HV are 1-A 60-W(1) common anode-capable constant current buck LED drivers. They are suitable for driving single string of 3-W HBLED with up to 96% efficiency. They accept input voltages from 4.5 VDC to 65 VDC and deliver up to 1-A average LED current with ±3% accuracy. The integrated low-side N-channel power MOSFET and current sensing element realize simple and low component count circuitry, as no bootstrapping capacitor and external current-sensing resistor are required. An external small-signal resistor to ground provides very fine LED current adjustment, analog dimming, and thermal fold-back functions.
Constant switching frequency operation eases EMI. No external loop compensation network is needed. The proprietary Pulse-Level-Modulation (PLM) control method benefits in high conversion efficiency and true average LED current regulation. Fast response time realizes fine LED current pulse fulfilling the 240 Hz 256-step dimming resolution requirement for general lighting.
The LM3414 and LM3414HV are available in SOIC-8 and 3 mm × 3 mm WSON-8 packages.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 | |
|---|---|---|---|---|---|---|
| * | 데이터 시트 | LM3414/HV 1-A, 60-W Common Anode-Capable Constant Current Buck LED Driver Requires No External Current Sensing Resistor datasheet (Rev. F) | PDF | HTML | 2015. 12. 3 | ||
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | ||||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | ||||
| 기술 문서 | Color the world with what’s next in RGBW LED light source technology – part 1 | PDF | HTML | 2017. 8. 3 | |||
| 애플리케이션 노트 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013. 5. 3 |
설계 및 개발
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LM3414HVSDEVAL — LM3414 LM3414HV 1A 65V LED 드라이버 LLP-8 평가 보드
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LM3414 TINA-TI Transient Line Transient Reference Design
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (NGQ) | 8 | Ultra Librarian |
| HSOIC (DDA) | 8 | Ultra Librarian |
주문 및 품질
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