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

LM2754

활성

800mA 스위치드 커패시터 플래시 LED 드라이버(시간 출력 보호 지원)

지금 주문하기
데이터 시트

LM2754

활성
데이터 시트 지금 주문하기

제품 상세 정보

Input voltage type DC/DC Topology Charge pump, current mode Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 3 Iout (max) (A) 0.8 Iq (typ) (mA) 3.4 Features Enable, True Shutdown Operating temperature range (°C) -40 to 85 Dimming method Analog, PWM Number of channels 4 Rating Catalog
Input voltage type DC/DC Topology Charge pump, current mode Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 3 Iout (max) (A) 0.8 Iq (typ) (mA) 3.4 Features Enable, True Shutdown Operating temperature range (°C) -40 to 85 Dimming method Analog, PWM Number of channels 4 Rating Catalog
WQFN (RTW) 24 16 mm² (4 mm × 4 mm)
  • Up to 800mA Output Current
  • Wide Operating Input Voltage Range: 2.8V to 5.5V
  • Drives 1, 2, 3 or 4 LEDs in Parallel
  • Ability to Disable One Current Sink Via the SEL Pin to Accommodate 3-LED Flash Modules
  • Time-Out Circuitry Limits Flash Duration to 1 Second
  • TX Input Ensures Synchronization with RF Power Amplifier Pulse
  • Adaptive 1x, 1.5x and 2x Gains for Maximum Efficiency
  • 1MHz Constant Frequency Operation
  • Output Current Limit
  • True Shutdown Output Disconnect
  • <1µA Shutdown Current
  • Internal Soft-Start Limits Inrush Current
  • No Inductor Required
  • Total Solution Size without LED <28mm2
  • Low Profile 24-Pin WQFN Package (4mm x 4mm x 0.8mm)

All trademarks are the property of their respective owners.

  • Up to 800mA Output Current
  • Wide Operating Input Voltage Range: 2.8V to 5.5V
  • Drives 1, 2, 3 or 4 LEDs in Parallel
  • Ability to Disable One Current Sink Via the SEL Pin to Accommodate 3-LED Flash Modules
  • Time-Out Circuitry Limits Flash Duration to 1 Second
  • TX Input Ensures Synchronization with RF Power Amplifier Pulse
  • Adaptive 1x, 1.5x and 2x Gains for Maximum Efficiency
  • 1MHz Constant Frequency Operation
  • Output Current Limit
  • True Shutdown Output Disconnect
  • <1µA Shutdown Current
  • Internal Soft-Start Limits Inrush Current
  • No Inductor Required
  • Total Solution Size without LED <28mm2
  • Low Profile 24-Pin WQFN Package (4mm x 4mm x 0.8mm)

All trademarks are the property of their respective owners.

The LM2754 is an integrated low noise, high current switched capacitor DC/DC converter with four regulated current sinks. The device is optimized for driving 1 to 4 high power white LEDs in parallel with a maximum current of 800mA. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.

Two external low power resistors set the desired current for Torch and Flash modes. The TX pin allows the device to be forced into Torch mode during a Flash pulse, allowing for synchronization between the RF power amplifier pulse and Flash/Torch modes. To protect the device and Flash LEDs, internal Time-Out circuitry turns off the LM2754 in case of a faulty prolonged Flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.

The LM2754 is available in a small 24-pin thermally enhanced WQFN package.

The LM2754 is an integrated low noise, high current switched capacitor DC/DC converter with four regulated current sinks. The device is optimized for driving 1 to 4 high power white LEDs in parallel with a maximum current of 800mA. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.

Two external low power resistors set the desired current for Torch and Flash modes. The TX pin allows the device to be forced into Torch mode during a Flash pulse, allowing for synchronization between the RF power amplifier pulse and Flash/Torch modes. To protect the device and Flash LEDs, internal Time-Out circuitry turns off the LM2754 in case of a faulty prolonged Flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.

The LM2754 is available in a small 24-pin thermally enhanced WQFN package.
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기술 자료

검색된 결과가 없습니다. 검색어를 지우고 다시 시도하세요.
2개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 LM2754 800mA Switched Capacitor Flash LED Driver with Time-Out Protection datasheet (Rev. A) 2013. 5. 1
백서 Common LED Functions and LED Driver Design Considerations 2020. 9. 21

설계 및 개발

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패키지 핀 CAD 기호, 풋프린트 및 3D 모델
WQFN (RTW) 24 Ultra Librarian
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지원 및 교육

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