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LMQ61460

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工业类 3V 至 36V、6A、低噪声同步降压转换器

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数据表

LMQ61460

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Fixed soft start, Forced PWM, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Spread Spectrum, Synchronous rectification, Tracking, UVLO adjustable, Wettable flanks package EMI features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
Rating Catalog Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Fixed soft start, Forced PWM, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Spread Spectrum, Synchronous rectification, Tracking, UVLO adjustable, Wettable flanks package EMI features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
VQFN-HR (RJR) 14 14 mm² (4 mm × 3.5 mm)
  • Functional Safety-Capable
  • Mitigated interference and noise technology – architecture 2 (MINT 2)
    • HotRod™ package minimizes switch node ringing
    • Internal bypass capacitors reduce EMI
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable switch node rise time
  • Designed for rugged applications
    • Supports 42V transient
    • 0.4V dropout with 4A load (typical)
  • High efficiency power conversion at all loads
    • 7µA no load current at 13.5VIN, 3.3 VOUT
    • 90% PFM efficiency at 1mA, 13.5VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41mΩ (typical)
      • RDS_ON_LS = 21mΩ (typical)
  • External bias option for improved efficiency
  • Pin compatible with:
  • Use TPSM63606 module for faster time to market
  • Functional Safety-Capable
  • Mitigated interference and noise technology – architecture 2 (MINT 2)
    • HotRod™ package minimizes switch node ringing
    • Internal bypass capacitors reduce EMI
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable switch node rise time
  • Designed for rugged applications
    • Supports 42V transient
    • 0.4V dropout with 4A load (typical)
  • High efficiency power conversion at all loads
    • 7µA no load current at 13.5VIN, 3.3 VOUT
    • 90% PFM efficiency at 1mA, 13.5VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41mΩ (typical)
      • RDS_ON_LS = 21mΩ (typical)
  • External bias option for improved efficiency
  • Pin compatible with:
  • Use TPSM63606 module for faster time to market

The LMQ61460 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input range of 3.0V to 36V; tolerant of 42V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output.

The LMQ61460 is designed with mitigated interference and noise technology using architecture 2 features (MINT 2) to quickly and easily implement a low-EMI design. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, makes sure of exceptional efficiency across the entire load range.

The LMQ61460 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input range of 3.0V to 36V; tolerant of 42V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output.

The LMQ61460 is designed with mitigated interference and noise technology using architecture 2 features (MINT 2) to quickly and easily implement a low-EMI design. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, makes sure of exceptional efficiency across the entire load range.
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技术文档

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* 数据表 LMQ61460 3V to 36V, 6A , Synchronous Step-Down Converter With Mitigated Interference and Noise Technology (MINT) 数据表 (Rev. F) PDF | HTML 2026-8-4
应用手册 如何对基于 PCM 的降压稳压器实施简单的恒流调节方案 PDF | HTML 英语版 PDF | HTML 2023-8-17
技术文章 How buck regulators with integrated capacitors help lower EMI and save board space PDF | HTML 2022-3-16
技术文章 Powering medical imaging applications with DC/DC buck converters PDF | HTML 2020-11-24
功能安全信息 LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A) PDF | HTML 2020-9-9
证书 LMQ61460EVM-400K EU Declaration of Conformity (DoC) 2020-9-1

设计与开发

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评估板

LMQ61460EVM — 36V 输入、低 EMI、6A/5V 输出、同步 400kHz 降压转换器评估模块

LMQ61460EVM 评估模块 (EVM) 是一款经全面封装测试的电路，用于评估 LMQ61460-Q1 同步降压转换器。  LMQ61460-Q1 采用具有集成电容器的小尺寸解决方案，提供出色的效率、低 Iq 和低 EMI。
用户指南: PDF | HTML
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设计工具

SNVR488 — LMQ61460EVM-400K Design Files

支持的产品和硬件
设计工具

SNVR493 — LMQ61460 Design Tool

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN-HR (RJR) 14 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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