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AC/DC & DC/DC converters (integrated FET)

LMR14030-Q1

現行

具有 40-uA IQ 的 SIMPLE SWITCHER® 汽車 40-V、3.5-A、2.2-MHz 降壓轉換器

立即訂購
產品規格表

現在提供此產品的更新版本

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功能相同，但引腳輸出與所比較的產品不同
LM63635-Q1 現行 具展頻功能的 3.5-V 至 32-V、3.25-A 降壓轉換器 Smaller footprint and improved EMI performance in HotRod™ QFN package.

LMR14030-Q1

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 3.5 Vin (min) (V) 4 Vin (max) (V) 40 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Spread Spectrum, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 30 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
Iout (max) (A) 3.5 Vin (min) (V) 4 Vin (max) (V) 40 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Spread Spectrum, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 30 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 WSON (DPR) 10 16 mm² 4 x 4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    - Device Temperature Grade 1: –40°C to 125°C
    Ambient Operating Temperature Range
    - Device HBM ESD Classification Level H1C
    - Device CDM ESD Classification Level C4A
  • 4 V to 40 V Input Range
  • 3.5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Spread Spectrum Option for Reduced EMI
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    - Device Temperature Grade 1: –40°C to 125°C
    Ambient Operating Temperature Range
    - Device HBM ESD Classification Level H1C
    - Device CDM ESD Classification Level C4A
  • 4 V to 40 V Input Range
  • 3.5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Spread Spectrum Option for Reduced EMI
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package

The LMR14030-Q1 is a 40 V, 3.5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2 A and 5 A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14050-Q1. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

The LMR14030-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.

The LMR14030-Q1 is a 40 V, 3.5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2 A and 5 A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14050-Q1. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

The LMR14030-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.
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技術文件

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類型 標題 日期
* Data sheet LMR14030-Q1 SIMPLE SWITCHER® 40 V, 3.5 A Step-Down Converter with 40 µA IQ datasheet (Rev. A) PDF | HTML 2016年 2月 3日
Application note Design Consideration on Boot Resistor in Buck Converter PDF | HTML 2023年 5月 15日
Selection guide Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) 2021年 4月 15日
Application note Reduce Conducted EMI in Automotive Buck Converter Applications 2019年 7月 31日
Application note How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) 2019年 3月 29日
Technical article Which multichannel buck converter layout offers better EMI performance? PDF | HTML 2018年 10月 23日
Application note How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters 2018年 4月 27日
Application note Low Conducted EMI Power Solution for Automotive Digital Cockpit With LMR14050 an 2018年 2月 7日
Application note Design Feedforward Capacitor for LMR14020 2017年 12月 20日
Application note How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter 2017年 9月 20日
Application note Extending Buck Regulator to Positive Buck-Boost Configuration 2017年 9月 2日
EVM User's guide LMR14030QDPR EVM User's Guide 2016年 2月 8日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LMR14030QDPREVM — LMR14030QDPR 寬輸入電壓降壓轉換器評估模組

The LMR14030QDPREVM is a fully assembled and tested circuit for evaluating the LMR14030QDPRRQ1 Step-Down Converter. The LMR14030QDPREVM operates from 7V to 40V input (12V nominal) and provides a 5.0V or 3.3V output at 3.5A. The board has jumper connectors to enable or disable the converter (...)
使用指南: PDF
TI.com 無法提供
開發板

LMR14030SEVM — LMR14030S 降壓轉換器評估模組

The LMR14030SEVM is a fully assembled and tested circuit for evaluating the LMR14030S Step-Down Converter. The LMR14030SEVM operates from 7V to 36V input (12V nominal) and provides a 5.0V or 3.3V output at 3.5A. The board also has jumper connectors to enable or disable the converter operation, (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LMR14030S PSPICE Transient Model

SNVM707.ZIP (61 KB) - PSpice Model
下載
模擬型號

LMR14030S PSpice Average Model

SNVMBD5.ZIP (72 KB) - PSpice Model
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模擬型號

LMR14030S Unencrypted PSpice Transient Model

SNVM922.ZIP (6 KB) - PSpice Model
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參考設計

TIDA-020001 — 車用 144 區局部調光背光參考設計

This local dimming backlight reference design conserves power, extends the life of liquid-crystal displays (LCDs), and enhances automotive display quality through high dynamic range (HDR) or localized dimming technology. Seven multi-channel constant-current LED drivers allow for 144-zone localized (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP11136 — 車用無線電 USB 電源埠 (5V@2.1A) 和 LED 背光驅動器參考設計

The PMP11136 reference design supplies cable drop compensated USB outputs of 5V @ 2.1A and 5V @ 1A. Additionally, there is a buck converter output of 3.3V @ 2.5A and a 12V @ 0.163A current regulated LED boost converter.
Test report: PDF
電路圖: PDF
封裝 引腳 下載
HSOIC (DDA) 8 檢視選項
WSON (DPR) 10 檢視選項
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