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LM64460-Q1

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汽车级 3V 至 36V、6A、低 EMI 同步降压转换器

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数据表

LM64460-Q1

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数据表 立即订购

产品详情

Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34.2 Vout (min) (V) 1 Features Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34.2 Vout (min) (V) 1 Features Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable
VQFN-FCRLF (RYF) 22 14 mm² (4 mm × 3.5 mm)
  • 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, fixed 3.3V, 5V, or adjustable output voltage from 1V to 95% VIN
    • 150°C maximum junction temperature
    • Fixed 2.1MHz switching frequency (adjustable from 200kHz to 2.2MHz using 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
    • Pin-configurable spread spectrum 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 LM644x0-Q1 with the WEBENCH Power Designer
  • 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, fixed 3.3V, 5V, or adjustable output voltage from 1V to 95% VIN
    • 150°C maximum junction temperature
    • Fixed 2.1MHz switching frequency (adjustable from 200kHz to 2.2MHz using 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
    • Pin-configurable spread spectrum 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 LM644x0-Q1 with the WEBENCH Power Designer

The LM644x0-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 LM644x0-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 is synchronizable between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the specific requirements of the application.

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.

The LM644x0-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 LM644x0-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 is synchronizable between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the specific requirements of the application.

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.
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* 数据表 LM644x0-Q1 3V to 36V, 4A and 6A, Automotive Synchronous Bucks With Pin Selectable Light-Load Mode and Mitigated Interference and Noise Technology (MINT) 数据表 (Rev. D) PDF | HTML 2026-7-31
功能安全信息 LM644X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2024-6-4
证书 LM64460EVM-2MHZ EU RoHS Declaration of Conformity (DoC) 2021-12-9

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评估板

LM64460EVM — 适用于 LM64460-Q1 汽车类 3V 至 36V、6A 低 EMI 同步降压转换器的评估模块

LM64460EVM-2MHZ 高密度评估模块 (EVM) 旨在展示 LM64460-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。展频频率调制和 FPWM/自动工作模式根据 LM64460-Q1 的 MODE/SYNC 引脚进行配置。此外，LM64460-Q1 的默认开关频率为 (...)

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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。

支持的产品和硬件
计算工具

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。

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN-FCRLF (RYF) 22 Ultra Librarian
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