LM63460-Q1
- AEC-Q100 qualified for automotive
applications
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
- Functional Safety-Capable
- Versatile synchronous buck DC/DC
converter
- Wide input voltage range of 3V to 36V with tolerance for load-dump transients up to 42V
- 4A and 6A options available
- 1% accurate adjustable output voltage from 1V to 95% VIN
- 150°C maximum junction temperature
- Frequency adjustable from 200kHz to 2.2MHz using the RT pin or a SYNC signal
- Improved reliability with optimized pinout design and clearance for short-circuit-to-adjacent-pin test
- Mitigated interference and noise technology – architecture 1 (MINT 1)
- Enhanced HotRod™ QFN package reduces switch-node ringing
- Parallel input path minimizes parasitic inductance
- Spread spectrum frequency modulation
- Selectable FPWM or PFM mode at light loads
- High efficiency across the full load
range
- 92.5% at 13.5VIN, 5VOUT, 6A, 2.1MHz
- 7µA typical at 3.3VOUT no-load input current
- 0.6µA typical shutdown quiescent current
- 0.6V typical dropout at full load
- External bias option for improved efficiency
- Create a custom regulator design using the LM634x0-Q1 with the WEBENCH Power Designer
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, with mitigated interference and noise technology using architecture 1 (MINT 1), 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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| 功能安全信息 | LM634X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) | PDF | HTML | 2024-6-4 | |||
| 证书 | LM63460EVM-2MHZ EU RoHS Declaration of Conformity (DoC) | 2021-12-9 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LM63460EVM — LM63460-Q1 汽车 5.5V 至 36V、6A 低 EMI 同步降压转换器评估模块
LM63460EVM-2MHZ 高密度评估模块 (EVM) 旨在展示 LM63460-Q1 高性能汽车类同步降压直流/直流转换器的性能。该 EVM 在 5.5V 至 36V 的宽输入电压范围内工作，可提供 5V 固定输出电压以及优于 1% 的设定点精度和高达 6A 的输出电流。以下功能可在出现故障期间为稳压器提供保护：欠压锁定 (UVLO)、内部软启动、断续模式过流保护 (OCP)、开漏 PGOOD 指示器和热关断。默认情况下，LM63460-Q1 具有扩频频率调制功能。此外，LM63460-Q1 具有电阻器可调开关频率以及同步输入功能，可将频率调节为外部时钟信号的频率。
SNVR518 — LM63440-Q1, LM63460-Q1, LM64440-Q1 and LM64460-Q1 DC/DC Converter Quickstart Design Tool
欢迎使用 LM63440-Q1、LM63460-Q1、LM64440-Q1 和 LM64460-Q1 快速入门设计工具。此独立工具可帮助电源工程师设计基于此系列同步降压电源转换器的直流/直流降压稳压器。这样，用户可以快速实现优化的设计，从而满足应用要求。
SNVR518 — LM63440-Q1, LM63460-Q1, LM64440-Q1 and LM64460-Q1 DC/DC Converter Quickstart Design Tool
欢迎使用 LM63440-Q1、LM63460-Q1、LM64440-Q1 和 LM64460-Q1 快速入门设计工具。此独立工具可帮助电源工程师设计基于此系列同步降压电源转换器的直流/直流降压稳压器。这样，用户可以快速实现优化的设计，从而满足应用要求。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN-FCRLF (RYF) | 22 | Ultra Librarian |
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