LMR66420-Q1
- Functional Safety-Capable
- AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Optimized for low EMI requirements:
- Dual random spread spectrum reduces peak emissions
- Enhanced HotRod™ QFN package minimizes switch node ringing
- Greater than 85% efficiency at 1 mA
- Designed for automotive applications:
- Junction temperature range: –40°C to +150°C
- NC pin between critical pins for better reliability
- Best in-class pin FMEA
- Supports 42-V automotive load dump transients
- Supports 3-VIN for automotive cold crank
- Miniature design size and low component cost:
- 2.6-mm × 2.6-mm enhanced HotRod QFN package with wettable flanks
- Internal control loop compensation
The LMR664x0-Q1 is a small 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.
The LMR664x0-Q1 is specifically designed to meet low standby power requirements for always-on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5 µA at 13.5 VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pin-out. The MODE/SYNC pin can be used to set or synchronize the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (optimal pin FMEA). The rich feature set of the LMR664x0-Q1 is designed to simplify implementation for a wide range of automotive end equipment.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LMR664x0-Q1, 36-V, 1-A, 2-A, and 3-A, Ultra-Small, Synchronous, Automotive Step-Down Converter datasheet | PDF | HTML | 2023/12/08 |
설계 및 개발
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LMR66430-2EVM — 2MHz 주파수를 갖춘 36V, 3A 동기식 벅 컨버터용 LMR66430 평가 모듈
LMR66430-2 평가 모듈(EVM)은 장치를 즉시 구성하고 다양한 기능을 테스트할 수 있는 여러 점퍼 및 테스트 포인트를 포함하여 LMR66430 벅 컨버터를 평가하기 위한 플랫폼입니다. 이 EVM은 LMR66430의 전기적 성능을 평가하는 것 외에도 회로 설계 및 레이아웃을 최종 사용자의 애플리케이션에 적용하는 예로 사용됩니다.
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
VQFN-FCRLF (RXB) | 14 | 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