LM3553
- Accurate and Programmable LED Current up to 1.2A in 128 Steps
- Total Solution Size < 30mm2
- 90% Peak Efficiency
- Drives 2 LEDs in Series with 1.2A from 5V Input
- Drives 2 LEDs in Series with 600mA from 3.0V Input
- Drives 1 LED with 1.2A from 3.0V Input
- Adjustable Over-Voltage Protection Allows for Single or Series LED Operation
- Four Operating Modes: Torch, Flash, Indicator, and Voltage Mode (4.98V)
- Programmable Flash Pulse Safety Timer in 16 Steps
- TX Input Ensures Synchronization with RF Power Amplifier Pulse or Prevents LED from Overheating
- LED Disconnect During Shutdown
- Flash/Imager Synchronization via FEN Pin
- Active Low Hardware Reset
- Multi-Function Pin (RESET and GPIO)
- Low Profile 12-pin WSON Package (DQB0012A: 3mm x 3mm x 0.8mm, 0.4mm pitch)
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The LM3553 is a fixed frequency, current mode step-up DC/DC converter with two regulated current sinks. The device is capable of driving loads up to 1.2A from a single-cell Li-Ion battery.
The LM3553 includes a TX pin that forces Torch mode during a flash event allowing for synchronization between the RF power amplifier and Flash/Torch modes. It also includes a multi-function pin (M/F) that can serve as a GPIO and a hardware RESET pin.
The LM3553 is available in a 3mm by 3mm package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM3553 1.2A Dual Flash LED Driver System with I 2 C Compatible Interface datasheet (Rev. B) | 2013. 5. 1 | ||
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | |||
| 애플리케이션 노트 | LM3553 1.2A Dual Flash LED Driver System with I2C Compatible Interface (Rev. B) | 2013. 4. 30 |
설계 및 개발
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LM3553SDEV — I2C 호환 인터페이스를 지원하는 1.2A 듀얼 플래시 LED 드라이버 시스템
The LM3553 is a fixed frequency, current mode step-up DC/DC converter with two regulated current sinks. The device is capable of driving loads up to 1.2A from a single-cell Li-Ion battery.
One or more high current flash LEDs can be driven in series either in a high power Flash mode or a lower power (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (DQB) | 12 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.