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LMQ66430

正在供货

具有 1.5µA IQ 的 36V、3A 低 EMI 同步降压转换器

立即订购

LMQ66430

正在供货
立即订购

产品详情

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 35 Vout (min) (V) 1 Features Enable, Fixed Output, Fixed soft start, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification EMI & noise features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics, Test & measurement
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 35 Vout (min) (V) 1 Features Enable, Fixed Output, Fixed soft start, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification EMI & noise features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics, Test & measurement
VQFN-FCRLF (RXB) 14 6.76 mm² (2.6 mm × 2.6 mm)
  • Functional Safety-Capable
  • Designed for industrial applications:
    • Junction temperature range –40°C to +150°C
    • NC pin between critical pins for better reliability
    • Best in-class pin FMEA
    • Input transient protection up to 42V
    • Wide input voltage range after start-up: 2.7V (falling threshold) to 36V
    • Adjustable output up to 95% of VIN, 3.3V and 5V fixed VOUT options available
  • Mitigated interference and noise technology – architecture 2 (MINT 2):
    • Integrated bypass, boot capacitors reduce EMI
    • Dual random spread spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
    • Adjustable FSW: 200kHz – 2.2MHz with RT pin
  • Greater than 85% efficiency at 1mA
  • Miniature design size and low component cost:
    • Integrated input bypass capacitors and bootstrap capacitor reducing EMI
    • 2.6mm × 2.6mm enhanced HotRod QFN package with wettable flanks
    • Internal control loop compensation
  • Functional Safety-Capable
  • Designed for industrial applications:
    • Junction temperature range –40°C to +150°C
    • NC pin between critical pins for better reliability
    • Best in-class pin FMEA
    • Input transient protection up to 42V
    • Wide input voltage range after start-up: 2.7V (falling threshold) to 36V
    • Adjustable output up to 95% of VIN, 3.3V and 5V fixed VOUT options available
  • Mitigated interference and noise technology – architecture 2 (MINT 2):
    • Integrated bypass, boot capacitors reduce EMI
    • Dual random spread spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
    • Adjustable FSW: 200kHz – 2.2MHz with RT pin
  • Greater than 85% efficiency at 1mA
  • Miniature design size and low component cost:
    • Integrated input bypass capacitors and bootstrap capacitor reducing EMI
    • 2.6mm × 2.6mm enhanced HotRod QFN package with wettable flanks
    • Internal control loop compensation

The LMQ664x0 is the industry smallest 36V, 3A (available in 2A and 1A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7V to 36V (after start-up or after operating) with transients up to 42V.

The LMQ664x0 is specifically designed to meet low standby power requirements for always-on, industrial applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5µA at 13.5VIN 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 pinout. The RT pin can be used to set the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (excellent choice pin FMEA). Mitigated interference and noise technology using architecture 2 features (MINT 2) enable the device to support low-EMI applications. The rich feature set of the LMQ664x0 is designed to simplify implementation for a wide range of industrial end equipment.

The LMQ664x0 is the industry smallest 36V, 3A (available in 2A and 1A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7V to 36V (after start-up or after operating) with transients up to 42V.

The LMQ664x0 is specifically designed to meet low standby power requirements for always-on, industrial applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5µA at 13.5VIN 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 pinout. The RT pin can be used to set the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (excellent choice pin FMEA). Mitigated interference and noise technology using architecture 2 features (MINT 2) enable the device to support low-EMI applications. The rich feature set of the LMQ664x0 is designed to simplify implementation for a wide range of industrial end equipment.
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技术文档

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功能安全信息 LMQ664x0 and LMQ664x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2024-11-5
应用简报 降压转换器电容器集成可减少满足 CISPR 25 5 类标准所需的 工作量 PDF | HTML 英语版 PDF | HTML 2024-1-19
技术文章 How buck regulators with integrated capacitors help lower EMI and save board space PDF | HTML 2022-3-16
证书 LMQ66430EVM-2M EU RoHS Declaration of Conformity (DoC) 2021-10-21

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）。

评估板

LMQ66430-2EVM — LMQ66430 采用增强型 Hotrod™ QFN 封装的 36V、3A 同步降压转换器评估模块

LMQ66430-2EVM 评估模块 (EVM) 可帮助设计人员评估 LMQ66430-Q1 器件的运行情况和性能，后者是一款同步降压直流/直流转换器，能驱动高达 3A 的负载电流，输入电压高达 36V。LMQ66430-Q1 具有超低的工作静态电流，在轻负载条件下实现高效率，采用小型 2.6mm × 2.6mm 增强型 HotRod™ QFN 封装，可提供小型低 EMI 解决方案尺寸。

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仿真模型

LMQ66430 PSpice Transient Model

SNVMCA9.ZIP (161 KB) - PSpice 模型
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN-FCRLF (RXB) 14 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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