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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LMQ61460

現行

工業 3-V 至 36-V、6-V、低雜訊同步降壓轉換器

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產品規格表

LMQ61460

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Low Noise, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Tracking, UVLO adjustable, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Low Noise, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Tracking, UVLO adjustable, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
VQFN-HR (RJR) 14 14 mm² 4 x 3.5
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • 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 42-V transient
    • 0.4-V dropout with 4-A load (typical)
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 90% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41 mΩ (typical)
      • RDS_ON_LS = 21 mΩ (typical)
  • External bias option for improved efficiency
  • Pin compatible with:
  • Use TPSM63606 module for faster time to market
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • 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 42-V transient
    • 0.4-V dropout with 4-A load (typical)
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 90% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41 mΩ (typical)
      • RDS_ON_LS = 21 mΩ (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 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. 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 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (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, ensures 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 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. 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 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (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, ensures exceptional efficiency across the entire load range.
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類型 標題 日期
* Data sheet LMQ61460 3-V to 36-V, 6 A, Low EMI Synchronous Step-Down Converter datasheet (Rev. D) PDF | HTML 2022年 6月 28日
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024年 4月 30日
Application note How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 2023年 8月 16日
Technical article How buck regulators with integrated capacitors help lower EMI and save board space PDF | HTML 2022年 3月 16日
Technical article Powering medical imaging applications with DC/DC buck converters PDF | HTML 2020年 11月 24日
Functional safety information LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A) PDF | HTML 2020年 9月 9日
Certificate LMQ61460EVM-400K EU Declaration of Conformity (DoC) 2020年 9月 1日

設計與開發

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開發板

LMQ61460EVM — 36-V、低 EMI 6-A、5-V 同步、400 kHz、降壓轉換器評估模組

The LMQ61460EVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMQ61460-Q1 synchronous step-down converter.  The LMQ61460-Q1 provides exceptional efficiency, low Iq, and low EMI in small solution size with integrated capacitors.
使用指南: PDF | HTML
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設計工具

SNVR488 — LMQ61460EVM-400K Design Files

支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
LMQ61460 — 工業 3-V 至 36-V、6-V、低雜訊同步降壓轉換器 LMQ61460-Q1 — 具有整合式電容器的車用 3-V 至 36-V、6-V 低 EMI 同步降壓安靜轉換器
硬體開發
開發板
LMQ61460EVM — 36-V、低 EMI 6-A、5-V 同步、400 kHz、降壓轉換器評估模組
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設計工具

SNVR493 — LMQ61460 Design Tool

支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
LMQ61460 — 工業 3-V 至 36-V、6-V、低雜訊同步降壓轉換器 LMQ61460-Q1 — 具有整合式電容器的車用 3-V 至 36-V、6-V 低 EMI 同步降壓安靜轉換器
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VQFN-HR (RJR) 14 檢視選項
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