The LM634x0-Q1 derives from a family of automotive, synchronous, buck, DC/DC converters with excellent efficiency and ultra-low IQ. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input voltage range from 3V to 36V, with support for load-dump transients up to 42V. The converter implements soft recovery from dropout to eliminate overshoot on the output.
The LM634x0-Q1 incorporates numerous features for excellent EMI performance, including spread-spectrum frequency modulation, a low-EMI Enhanced HotRod QFN package that mitigates switch-node ringing, and a symmetrical pinout for excellent input capacitor placement. The switching frequency can be set between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the application requirements.
PFM mode enables frequency foldback during light-load operation, allowing an unloaded current consumption of only 7µA (typical) and high light-load efficiency. A seamless transition between PWM and PFM modes, along with low MOSFET on-resistances and an external bias input, provides exceptional efficiency and thermal performance across the entire load range. The package has several NC pins between critical power pins, which improve the Failure Modes and Effects Analysis (FMEA) result.
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM634x0-Q1 3V to 36V, 4A and 6A, Automotive, Synchronous Buck DC/DC Converters With Adjustable Switching Frequency, Optimized for Reliability and Low EMI datasheet (Rev. C) | PDF | HTML | 2024/08/23 |
| Functional safety information | LM634X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) | PDF | HTML | 2024/06/04 | |
| User guide | LM63460-Q1 and LM64460-Q1 EVM User's Guide | PDF | HTML | 2021/12/16 | |
| Certificate | LM63460EVM-2MHZ EU RoHS Declaration of Conformity (DoC) | 2021/12/09 |
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LM63460EVM-2MHZ 고밀도 평가 모듈(EVM)은 LM63460-Q1 고성능 차량용 동기 벅 DC/DC 컨버터의 성능을 보여주도록 설계되었습니다. EVM은 5.5V~36V의 넓은 입력 전압 범위에서 작동하여 1% 이상의 설정값 정확도와 최대 6A 출력 전류를 가진 고정 5V 출력을 제공합니다. 고장 상태 시 레귤레이터를 보호하기 위한 여러 기능에는 저전압 잠금(UVLO), 내부 소프트 시작, 히컵 모드 과전류 보호(OCP), 오픈 드레인 PGOOD 표시기 및 열 셧다운 등이 있습니다. LM63460-Q1은 기본적으로 확산 (...)
Welcome to the LM63440-Q1, LM63460-Q1, LM64440-Q1 and LM64460-Q1 quick start design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator based on this family of synchronous buck power converters. As such, the user can expeditiously (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN-FCRLF (RYF) | 22 | Ultra Librarian |