홈 전력 관리 LED 드라이버 조명 LED 드라이버
홈
전력 관리
LED 드라이버
조명 LED 드라이버

LM3447

활성

LED 조명용 단계별 조광 가능, 1차측 전원 제어, PFC 플라이백 컨트롤러

지금 주문하기
데이터 시트

LM3447

활성
데이터 시트 지금 주문하기

제품 상세 정보

Input voltage type AC/DC Topology Flyback Vin (min) (V) 7.5 Vin (max) (V) 17.5 Vout (max) (V) 60 Vout (min) (V) 9 Iout (max) (A) 2 Iq (typ) (mA) 1.6 Features Adjustable Switch Frequency, Soft Switching, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Forward Phase (Triac), Reverse Phase Number of channels 1 Rating Catalog
Input voltage type AC/DC Topology Flyback Vin (min) (V) 7.5 Vin (max) (V) 17.5 Vout (max) (V) 60 Vout (min) (V) 9 Iout (max) (A) 2 Iq (typ) (mA) 1.6 Features Adjustable Switch Frequency, Soft Switching, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Forward Phase (Triac), Reverse Phase Number of channels 1 Rating Catalog
TSSOP (PW) 14 32 mm² (5 mm × 6.4 mm)
  • Integrated Phase Angle Decode
    • Leading and Trailing Edge Compatible
    • Over 50:1 Dimming Range
  • Power Factor Correction with Low Total Harmonic Distortion
  • Primary Side Control Using Input Voltage Feedforward Technique
  • Input Power Regulation Scheme with Improved Line Regulation
  • Constant Power Operation of LEDs to Compensate for Forward Voltage
    Variations Over Temperature and Lifetime
  • Fixed Frequency Discontinuous Conduction Mode Operation
  • Valley Switching Operation to Achieve High Efficiency and Low EMI
  • Efficient TRIAC Hold Current Management
  • Thermal Foldback Function for LED Protection
  • LED Open Circuit and Short Circuit Protection
  • Integrated Phase Angle Decode
    • Leading and Trailing Edge Compatible
    • Over 50:1 Dimming Range
  • Power Factor Correction with Low Total Harmonic Distortion
  • Primary Side Control Using Input Voltage Feedforward Technique
  • Input Power Regulation Scheme with Improved Line Regulation
  • Constant Power Operation of LEDs to Compensate for Forward Voltage
    Variations Over Temperature and Lifetime
  • Fixed Frequency Discontinuous Conduction Mode Operation
  • Valley Switching Operation to Achieve High Efficiency and Low EMI
  • Efficient TRIAC Hold Current Management
  • Thermal Foldback Function for LED Protection
  • LED Open Circuit and Short Circuit Protection

The LM3447 is a versatile power factor correction (PFC) controller designed to meet the performance requirements of residential and commercial phase-cut dimmer compatible LED lamp drivers. The device incorporates a phase decoder circuit and an adjustable hold current circuit to provide smooth, flicker free dimming operation. A proprietary primary side control technique based on input voltage feedforward is used to regulate the input power drawn by the LED driver and to achieve line regulation over a wide range of input voltage. Valley switching operation is implemented to minimize switching loss and reduce EMI. An internal thermal foldback circuit is provided to protects the LEDs from damage based on the temperature sensed by a single external NTC resistor. Additional features include LED open circuit and short circuit protection, cycle-by-cycle FET over-current protection, burst mode fault operation using an internal 812ms fault timer and internal thermal shutdown.

The LM3447 is ideal for implementing dimmable, isolated single stage LED lamp drivers where simplicity, low-component count and small solution size are of primary importance. This device is currently available in a TSSOP 14-pin package.

The LM3447 is a versatile power factor correction (PFC) controller designed to meet the performance requirements of residential and commercial phase-cut dimmer compatible LED lamp drivers. The device incorporates a phase decoder circuit and an adjustable hold current circuit to provide smooth, flicker free dimming operation. A proprietary primary side control technique based on input voltage feedforward is used to regulate the input power drawn by the LED driver and to achieve line regulation over a wide range of input voltage. Valley switching operation is implemented to minimize switching loss and reduce EMI. An internal thermal foldback circuit is provided to protects the LEDs from damage based on the temperature sensed by a single external NTC resistor. Additional features include LED open circuit and short circuit protection, cycle-by-cycle FET over-current protection, burst mode fault operation using an internal 812ms fault timer and internal thermal shutdown.

The LM3447 is ideal for implementing dimmable, isolated single stage LED lamp drivers where simplicity, low-component count and small solution size are of primary importance. This device is currently available in a TSSOP 14-pin package.
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기술 자료

검색된 결과가 없습니다. 검색어를 지우고 다시 시도하세요.
4개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 LM3447 Phase Dim, Primary Side PFC Flyback Controller for LED Lighting datasheet (Rev. A) 2012. 5. 17
백서 Common LED Functions and LED Driver Design Considerations 2020. 9. 21
선택 가이드 Power Management Guide 2018 (Rev. R) 2018. 6. 25
사용 설명서 Using the LM3447-PAR-230VEVM 2012. 8. 7

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

LM3447-A19-120VEVM — LM3447 LED 조명용 플라이백 컨트롤러 평가 모듈 보드

The Texas Instruments LM3447-A19-120VEVM evaluation module (EVM) helps designers evaluate the performance of the LM3447 PFC Flyback Controller for LED Lighting. The EVM is a primary-side power regulated PFC controller used for commercial and residential phase-cut dimmer compatible LED lamp (...)
사용 설명서: PDF
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평가 보드

LM3447-A19-230VEVM — LM3447 LED 조명용 플라이백 컨트롤러 평가 모듈 보드

The Texas Instruments LM3447-A19-230VEVM evaluation module (EVM) helps designers evaluate the performance of the LM3447 PFC Flyback Controller for LED Lighting. The EVM is a primary-side power regulated PFC controller used for commercial and residential phase-cut dimmer compatible LED lamp (...)
사용 설명서: PDF
지원되는 제품 및 하드웨어
재고 있음
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계산 툴

LM3447DESIGN-CALC — LM3447 Design Tool

LM3447 설계 계산기는 LM3447 오프라인, 위상 조광 가능, 1차측 전원 조정, PFC 플라이백 컨트롤러에 대한 외부 부품 값을 결정하는 데 도움이 되는 Excel 기반 설계 툴입니다. LM3447 AC/DC LED 드라이버는 LED 램프와 다운라이트와 같은 위상 조광 가능(TRIAC 및 후행 에지) LED 조명 애플리케이션에 사용하도록 고안되었습니다.

지원되는 제품 및 하드웨어
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TSSOP (PW) 14 Ultra Librarian
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