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DC/DC 轉換器

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

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
LM63635-Q1 現行 具有展頻功能的車用、3.5V 至 36V、3.25A 降壓式電壓轉換器 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

Rating Automotive Topology Buck Iout (max) (A) 3.5 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 30 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Spread Spectrum, Tracking, UVLO adjustable EMI & noise features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
Rating Automotive Topology Buck Iout (max) (A) 3.5 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 30 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Spread Spectrum, Tracking, UVLO adjustable EMI & noise features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
WSON (DPR) 10 16 mm² (4 mm × 4 mm) HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • 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
  • 4V to 40V input range
  • 3.5A continuous output current
  • Ultra-low 40µA operating quiescent current
  • 90mΩ high-side MOSFET
  • 75ns minimum switch-on time
  • Current mode control
  • Adjustable switching frequency from 200kHz to 2.5MHz
  • 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
  • 1µA 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
  • 4V to 40V input range
  • 3.5A continuous output current
  • Ultra-low 40µA operating quiescent current
  • 90mΩ high-side MOSFET
  • 75ns minimum switch-on time
  • Current mode control
  • Adjustable switching frequency from 200kHz to 2.5MHz
  • 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
  • 1µA shutdown current
  • External soft start
  • Thermal, overvoltage, and short protection
  • 8-pin HSOIC with PowerPAD™ package

The LMR14030-Q1 is a 40V, 3.5A step down regulator with an integrated high-side MOSFET. With a wide input range from 4V to 40V, the device is designed for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2A and 5A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14050-Q1. The regulator quiescent current is 40µA in sleep mode, which is designed for battery powered systems. An ultra-low 1µA 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 feature 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 40V, 3.5A step down regulator with an integrated high-side MOSFET. With a wide input range from 4V to 40V, the device is designed for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2A and 5A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14050-Q1. The regulator quiescent current is 40µA in sleep mode, which is designed for battery powered systems. An ultra-low 1µA 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 feature 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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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LMR14030-Q1 SIMPLE SWITCHER® Power Converter, 40V, 3.5A, Automotive, Step-Down Converter With 40µA IQ datasheet (Rev. B) PDF | HTML 2024/12/20
應用說明 Design Consideration on Boot Resistor in Buck Converter PDF | HTML 2023/5/15
選擇指南 Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) 2021/4/15
應用說明 Reduce Conducted EMI in Automotive Buck Converter Applications 2019/7/31
應用說明 How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) 2019/3/29
技術文章 Which multichannel buck converter layout offers better EMI performance? PDF | HTML 2018/10/23
應用說明 How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters 2018/4/27
應用說明 Low Conducted EMI Power Solution for Automotive Digital Cockpit With LMR14050 an 2018/2/7
應用說明 Design Feedforward Capacitor for LMR14020 2017/12/20
應用說明 How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter 2017/9/20
應用說明 Extending Buck Regulator to Positive Buck-Boost Configuration 2017/9/2

設計與開發

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開發板

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

LMR14030QDPREVM 是完全組裝過且經測試的電路，可用於評估 LMR14030QDPRRQ1 的降壓轉換器。LMR14030QDPREVM 的運作輸入電壓範圍為 7V 至 40V（額定電壓為 12V），並可提供 5.0V 或 3.3V (3.5A) 的輸出。此電路板具有跨接連接器，可用於啟用或停用轉換器運作、變更輸出電壓，並與外部時鐘同步。電路板還具備用於回饋迴路量測的 AC 訊號注入端子。
使用指南: PDF
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開發板

LMR14030SEVM — LMR14030S 降壓轉換器評估模組

LMR14030SEVM 是完全組裝過且經測試的電路，可用於評估 LMR14030S 的降壓轉換器。LMR14030SEVM 的運作輸入電壓範圍為 7V 至 36V（額定電壓為 12V），並可提供 5.0V 或 3.3V (3.5A) 的輸出。該電路板也配備跳線連接器，以啟用或停用轉換器運作、變更輸出電壓以及與外部時脈同步。電路板還具備用於回饋迴路量測的 AC 訊號注入端子。

使用指南: PDF
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模擬型號

LMR14030S PSpice Average Model

SNVMBD5.ZIP (72 KB) - PSpice 模型
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模擬型號

LMR14030S PSPICE Transient Model

SNVM707.ZIP (61 KB) - PSpice 模型
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模擬型號

LMR14030S Unencrypted PSpice Transient Model

SNVM922.ZIP (6 KB) - PSpice 模型
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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

PMP11136 參考設計提供 5V @ 2.1A 和 5V @ 1A 的纜線壓降補償 USB 輸出。此外，還有 3.3V @ 2.5A 的降壓轉換器輸出和 12V @ 0.163A 的電流調節 LED 升壓轉換器。
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參考設計

TIDA-020001 — 車用 144 區局部調光背光參考設計

本機調光背光參考設計可節省電力，延長液晶顯示器 (LCD) 的使用壽命，並透過高動態範圍 (HDR) 或局部調光技術強化汽車顯示器品質。七個多通道定電流 LED 驅動器，可透過脈衝寬度調變 (PWM) 導通時間和電流位準亮度配置，實現 144 區局部調光。單一序列介面允許以菊鏈方式連接 LED 驅動器，以進行亮度與配置編程。溫度與環境光感測器可感測周圍環境，以防止發生過熱情況，並根據環境亮度調整全域亮度。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (DPR) 10 Ultra Librarian
HSOIC (DDA) 8 Ultra Librarian
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