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LM3402
- Integrated 0.5-A N-channel MOSFET
- VIN Range from 6 V to 42 V (LM3402)
- VIN Range from 6 V to 75 V (LM3402HV)
- 500 mA Output Current Over Temperature
- Cycle-by-Cycle Current Limit
- No Control Loop Compensation Required
- Separate PWM Dimming and Low Power Shutdown
- Supports All Ceramic-Output Capacitors and Capacitor-Less Outputs
- Thermal Shutdown Protection
- VSSOP, SO PowerPAD Packages
The LM3402/HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 735 mA (typical) for step-down (Buck) regulators. Hysteretic control with controlled ON-time coupled with an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series - parallel connected arrays of LEDs of varying number and type, LED dimming by pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the feature set.
For all available packages, see the orderable addendum at the end of the data sheet.기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM3402/HV 0.5-A Constant Current Buck Regulator for Driving High Power LEDs datasheet (Rev. F) | PDF | HTML | 2015. 10. 29 | |
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | |||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | |||
| 애플리케이션 노트 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013. 5. 3 | |||
| 애플리케이션 노트 | Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 Packages (Rev. A) | 2013. 5. 1 | |||
| 애플리케이션 노트 | AN-1853 COT Drivers Control LED Ripple Current (Rev. A) | 2013. 5. 1 | |||
| 애플리케이션 노트 | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 2013. 4. 23 |
설계 및 개발
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| HSOIC (DDA) | 8 | Ultra Librarian |