전력 관리 LED 드라이버 조명 LED 드라이버

LM3444

활성

AC-DC 오프라인 LED 드라이버

제품 상세 정보

Input voltage type AC/DC Topology Buck, Flyback Vin (min) (V) 8 Vin (max) (V) 13 Vout (max) (V) 60 Vout (min) (V) 9 Iout (max) (A) 2 Iq (typ) (mA) 1.58 Features Adjustable Switch Frequency, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog Number of channels 1 Rating Catalog
Input voltage type AC/DC Topology Buck, Flyback Vin (min) (V) 8 Vin (max) (V) 13 Vout (max) (V) 60 Vout (min) (V) 9 Iout (max) (A) 2 Iq (typ) (mA) 1.58 Features Adjustable Switch Frequency, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog Number of channels 1 Rating Catalog
VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Application Voltage Range: 80 VAC to 277 VAC
  • Capable of Controlling LED Currents
    Greater than 1 A
  • Adjustable Switching Frequency
  • Low Quiescent Current
  • Adaptive Programmable Off-Time Allows for
    Constant Ripple Current
  • Thermal Shutdown
  • No Flicker at 120 Hz
  • Low-Profile 10-Pin VSSOP Package
    or 8-Lead SOIC Package
  • Patented Drive Architecture
  • Application Voltage Range: 80 VAC to 277 VAC
  • Capable of Controlling LED Currents
    Greater than 1 A
  • Adjustable Switching Frequency
  • Low Quiescent Current
  • Adaptive Programmable Off-Time Allows for
    Constant Ripple Current
  • Thermal Shutdown
  • No Flicker at 120 Hz
  • Low-Profile 10-Pin VSSOP Package
    or 8-Lead SOIC Package
  • Patented Drive Architecture

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.

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기술 자료

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10개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 LM3444 AC-DC Offline LED Driver datasheet (Rev. D) PDF | HTML 2015. 12. 31
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 AN-2097 LM3444 - 230VAC, 8W Isolated Flyback LED Driver (Rev. F) 2013. 5. 1
애플리케이션 노트 AN-2082 LM3444 -120VAC, 8W Isolated Flyback LED Driver (Rev. E) 2013. 5. 1
사용 설명서 AN-2083 LM3444 A19 Edison Retrofit Evaluation Board (Rev. C) 2013. 5. 1
애플리케이션 노트 An Improved Line Regulation Solution Used in LM3444/5 Non-Isolated LED Lighting 2012. 10. 25
사용 설명서 LM3444 MR16 Buck-Boost Reference Design (Rev. A) 2012. 2. 17
사용 설명서 LM3444 MR16 Boost Reference Design User Guide (Rev. A) 2012. 2. 13

설계 및 개발

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패키지 CAD 기호, 풋프린트 및 3D 모델
VSSOP (DGS) 10 Ultra Librarian
SOIC (D) 8 Ultra Librarian

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