설계 툴
데이터시트
LMQ62440-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +150°C, TJ
- Functional Safety-Capable
- Optimized for ultra-low EMI requirements
- Meets CISPR25 class 5 standard
- Hotrod™ package minimizes switch node ringing
- Internal bypass capacitors reduce EMI
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions
- Adjustable switch node rise time
- Designed for rugged Automotive applications
- Supports 42-V load dump
- 0.4-V dropout with 4-A load (typical)
- High efficiency power conversion at all loads
- 7-µA no load current at 13.5 VIN, 3.3 VOUT
- 90% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
- Low MOSFET ON resistance
- RDS_ON_HS = 41 mΩ (typical)
- RDS_ON_LS = 21 mΩ (typical)
- External bias option for improved efficiency
- Pin compatible with:
- LM62440-Q1 (36 V, 4 A)
The LMQ62440-Q1 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The device implements soft recovery from dropout eliminating overshoot on the output.
The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.
Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.
The device is available in a 14-pin VQFN-HR package with wettable flanks. Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.
관심 가지실만한 유사 제품
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
기술 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
모두 보기6 | 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LMQ62440-Q1 Automotive 3-V to 36-V, Low EMI Synchronous Step-Down Converter datasheet (Rev. A) | 2020/09/24 | |
| White paper | 전원 공급 장치의 EMI 절감을 위한 시간 및 비용 효율적 혁신 | 2020/12/04 | ||
| User guide | LMQ62440EVM 2-MHz User's Guide | PDF | HTML | 2020/09/14 | |
| Functional safety information | LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A) | PDF | HTML | 2020/09/09 | |
| Certificate | LMQ62440EVM-2MHz EU Declaration of Conformity (DoC) | 2020/09/01 | ||
| Functional safety information | LMQ62440-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution | 2020/04/01 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
평가 보드
LMQ62440EVM — 36V, 저 EMI 4A, 5V 동기, 2.1MHz, 스텝다운 컨버터 평가 모듈
The LMQ62440EVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMQ62440 synchronous step-down converter. The LMQ62440 provides exceptional efficiency, low Iq, and low EMI in small solution size with integrated capacitors.
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| VQFN-HR (RJR) | 14 | 옵션 보기 |
주문 및 품질
포함된 정보:
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
포함된 정보:
- 팹 위치
- 조립 위치