首頁 電源管理 AC/DC 和 DC/DC 轉換器 (整合式 FET)
首頁
電源管理
AC/DC 和 DC/DC 轉換器 (整合式 FET)

LMR14050

現行

具 40-μA IQ 的 SIMPLE SWITCHER® 40-V、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

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的產品不同
LMR51450 現行 36-V、5-A 同步降壓轉換器 Smaller solution size, higher efficiency and lower EMI.

LMR14050

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 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4 Vin (max) (V) 40 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, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 36 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4 Vin (max) (V) 40 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, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 36 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 4 V to 40 V Input Range
  • 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
  • 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
  • 4 V to 40 V Input Range
  • 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
  • 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 LMR14050 is a 40 V, 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. 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 LMR14050 is a 40 V, 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. 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.
filter 尋找其它 AC/DC 和 DC/DC 轉換器 (整合式 FET)
下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的產品不同
LM61460 現行 3-V 至 36-V、6-A、低 EMI 同步降壓轉換器 Next-generation 36-V, 6-A converter.

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 15
類型 標題 日期
* Data sheet LMR14050 SIMPLE SWITCHER® 40 V 5 A, 2.2 MHz Step-Down Converter with 40 µA IQ datasheet (Rev. A) PDF | HTML 2015年 3月 17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 Simple Solution for EMI Filter Stability Issue in DC/DC Converters (Rev. A) 2019年 4月 25日
Application note How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) 2019年 3月 29日
Application note How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters 2018年 4月 27日
Technical article There are more ways than you think to reduce conducted EMI PDF | HTML 2018年 4月 17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 LMR14050EVM User's Guide 2015年 1月 30日
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013年 4月 23日
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013年 4月 23日
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005年 7月 12日
Application note AN-643 EMI/RFI Board Design (Rev. B) 2004年 5月 3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

LMR14050SEVM — LMR14050S 降壓式轉換器評估模組

The LMR14050SEVM is a fully assembled and tested circuit for evaluating the LMR14050S Step-Down Converter. The LMR14050SEVM operates from 7V to 36V input (12V nominal) and provides a 5.0V or 3.3V output at 5A. The board also has jumper connectors to enable or disable the converter operation, change (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LMR14050S PSPICE Transient Model

SNVM708.ZIP (62 KB) - PSpice Model
下載
模擬型號

LMR14050S Unencrypted PSpice Transient Model

SNVM923.ZIP (6 KB) - PSpice Model
下載
參考設計

TIDA-01458 — 用於超音波 CW 脈衝產生器的低雜訊固定降壓 ±2.5 至 ±12V 輸出電壓 3A 電源參考設計

This reference design allows a digitally programmable power supply to power an ultrasound transmit circuit for continuous wave (CW) mode from a 24-V bus. There are two outputs adjustable from ±2.5 to ±12 V under user software control. These outputs can provide up to 2 A with very low (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP10743 — 使用 LMR14050 和 LMZ20502 的 7V 至 40V 廣泛輸入、3 輸出 SIMPLE SWITCHER® 參考設計

The reference design shows the wide input voltage capability, simple layout, and small solution size of the LMR14050 SIMPLE SWITCHER® Buck Converter and the LMZ20502 Nano Module. The LMR14050 provides a 5V output rail which feeds into two LMZ20502 Nano Modules.  The modules provide a 3.3V (...)
Test report: PDF
電路圖: PDF
參考設計

PMP10680 — 4.5V 至 24V 廣泛輸入、負 5V/2A 輸出非同步轉換器參考設計

The PMP10680 reference design is a non-sync buck converter with buck-boost configuration. The PMP10680 accepts an input voltage of 4.5 to 24Vin and provides a negative 5V output capable of supplying continuous 2A of current to the load. With negative output and the self-positive input, (...)
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HSOIC (DDA) 8 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片