LMS3655
- 96% Peak Efficiency While Converting 12 V to 5 V
- Low EMI and Switch Noise
- Minimized Switch Node Ringing
- Pseudo-Random Spread Spectrum
- 400-kHz (±10%) Fixed Switching Frequency
- –40°C to +150°C Junction Temperature Range
- External Frequency Synchronization
- RESET Output With Internal Filter and 3-ms Release Timer
- Automatic Light Load Mode for Improved Efficiency
- Pin-Selectable Forced PWM Mode
- Built-In Compensation, Soft Start, Current Limit, Thermal Shutdown, and UVLO
- 0.35-V Dropout With 3.5-A Load at 25°C (Typical)
- 32-µA IQ_VIN: Quiescent Current at 3.3 VOUT and No Load (Typical)
- 5.5-A Continuous Load Current
- Adjustable Output Voltage (1 V to 20 V)
- ±1.5% Reference Voltage Tolerance
- 4-mm × 5-mm, 0.5-mm Pitch SON Package
The LMS3655 synchronous buck regulators are optimized for high performance applications, providing an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.
Advanced high-speed circuitry allows the LMS3655 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.
An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LMS3655 5.5-A, 36-V Synchronous, 400-kHz DC-DC Step-Down Converter datasheet (Rev. B) | PDF | HTML | 2018/03/01 |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 2021/04/08 | ||
| Technical article | Powering up the performance of sensitive test and measurement systems | PDF | HTML | 2017/10/17 | |
| Application note | Designing High Performance, Low-EMI, Automotive Power Supplies | 2017/09/30 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LMS3655AQEVM — LMS3655-Q1 5.5A, 5V 동기, 400kHz, 스텝다운 컨버터 평가 모듈
LMS3655MQEVM — LMS3655-Q1 5.5A, 5V 동기, 400kHz, 스텝다운 컨버터 평가 모듈
PMP40269 — USB Type-C™ DFP 5V 1.5A + USB Type-A 5V 2.4A 차량용 충전기 레퍼런스 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN-HR (RNL) | 22 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.