전력 관리 LED 드라이버 차량용 LED 드라이버

LM3423-Q1

활성

직렬 DIM FET 드라이버 및 고장 플래그를 지원하는 차량용 N채널 정전류 LED 컨트롤러

제품 상세 정보

Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 150 Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 3 Vout (max) (V) 72 Iout (max) (A) 5 Iq (typ) (mA) 2 Switching frequency (max) (kHz) 2000 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown
Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 150 Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 3 Vout (max) (V) 72 Iout (max) (A) 5 Iq (typ) (mA) 2 Switching frequency (max) (kHz) 2000 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • AEC Qualified for Automotive Applications
    • Device Temperature Grade 1: −40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1)
    • Device Temperature Grade 0: −40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-Ω, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423-Q1 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423-Q1 and LM3423-Q0 Only)
  • AEC Qualified for Automotive Applications
    • Device Temperature Grade 1: −40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1)
    • Device Temperature Grade 0: −40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-Ω, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423-Q1 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423-Q1 and LM3423-Q0 Only)

The LM3421-Q1 and LM3423-Q1 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421-Q1 and LM3423-Q1 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421-Q1 and LM3423-Q1 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

The LM3421-Q1 and LM3423-Q1 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421-Q1 and LM3423-Q1 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421-Q1 and LM3423-Q1 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

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관심 가지실만한 유사 제품

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다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.
TPS92692-Q1 활성 확산 스펙트럼 주파수 모듈레이션 및 내부 PWM 제너레이터를 지원하는 정확도가 높은 LED 컨트롤러 This product is a multi-topology low-side NFET LED controller with spread spectrum capability. It supports both analog and PWM dimming (with external P-FET).

기술 자료

검색된 결과가 없습니다. 검색어를 지우고 다시 시도하세요.
6개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 LM342x-Q1 N -Channel Controllers for Constant-Current LED Drivers datasheet PDF | HTML 2019. 7. 30
백서 LED Drivers for Automotive Exterior Applications (Rev. B) 2018. 3. 27
기술 문서 Lighting the road ahead: LEDs in automotive front lighting PDF | HTML 2016. 9. 29
애플리케이션 노트 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013. 5. 3
애플리케이션 노트 AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013. 4. 23
사용 설명서 Ambient Light Adaptive LED Driver User Guide 2012. 1. 27

설계 및 개발

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시뮬레이션 모델

LM3423 PSpice Transient Model (Rev. A)

SNVMA70A.ZIP (124 KB) - PSpice 모델
지원되는 제품 및 하드웨어
패키지 CAD 기호, 풋프린트 및 3D 모델
HTSSOP (PWP) 20 Ultra Librarian

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지원 및 교육

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