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DC/DC 轉換器

LMR24220

現行

採用 micro SMD 的 42Vin、2.0A 降壓穩壓器

立即訂購
產品規格表

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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。
LMR51420 現行 具有 4.5V 至 36V、2A、同步降壓和 40µA IQ 的 SIMPLE SWITCHER® 電源轉換器 Smaller footprint in SOT-23 package, integrated compensation and synchronous rectification.

LMR24220

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 24 Vout (min) (V) 0.8 Features Enable, Overcurrent protection, Synchronous rectification Control mode COT with emulated ripple Operating temperature range (°C) -20 to 125 Iq (typ) (A) 0.0007 Duty cycle (max) (%) 94
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 24 Vout (min) (V) 0.8 Features Enable, Overcurrent protection, Synchronous rectification Control mode COT with emulated ripple Operating temperature range (°C) -20 to 125 Iq (typ) (A) 0.0007 Duty cycle (max) (%) 94
DSBGA (YPA) 28 0.5625 mm² (— mm × — mm)
  • Input Voltage Range of 4.5 V to 42 V
  • Output Voltage Range of 0.8 V to 24 V
  • Output Current up to 2 A
  • Integrated Low RDS(ON) Synchronous MOSFETs for High Efficiency
  • Up to 1-MHz Switching Frequency
  • Low Shutdown IQ, 25 µA Typical
  • Programmable Soft Start
  • No Loop Compensation Required
  • COT Architecture with ERM
  • Tiny Overall Solution Reduces System Cost
  • Integrated Synchronous MOSFETs Provides High Efficiency at Low Output Voltages
  • COT with ERM Architecture
  • Stable with Low ESR Capacitors
  • 28-Bump DSBGA (3.676 × 2.48 × 0.60 mm maximum) Packaging
  • Create a custom design using the LMR24220 with the WEBENCH® Power Designer
  • Input Voltage Range of 4.5 V to 42 V
  • Output Voltage Range of 0.8 V to 24 V
  • Output Current up to 2 A
  • Integrated Low RDS(ON) Synchronous MOSFETs for High Efficiency
  • Up to 1-MHz Switching Frequency
  • Low Shutdown IQ, 25 µA Typical
  • Programmable Soft Start
  • No Loop Compensation Required
  • COT Architecture with ERM
  • Tiny Overall Solution Reduces System Cost
  • Integrated Synchronous MOSFETs Provides High Efficiency at Low Output Voltages
  • COT with ERM Architecture
  • Stable with Low ESR Capacitors
  • 28-Bump DSBGA (3.676 × 2.48 × 0.60 mm maximum) Packaging
  • Create a custom design using the LMR24220 with the WEBENCH® Power Designer

The LMR24220 synchronously rectified buck converter features all required functions to implement a highly efficient and cost effective buck regulator. It is capable of supplying 2-A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LMR24220 does not rely on output capacitor ESR for stability. The device is designed to work exceptionally well with ceramic and other very low ESR output capacitors. It requires no loop compensation, results in a fast load-transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the on-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC undervoltage lockout, output overvoltage protection, thermal shutdown, and gate drive undervoltage lockout. The LMR24220 is available in the small DSBGA low profile chip-scale package.

The LMR24220 synchronously rectified buck converter features all required functions to implement a highly efficient and cost effective buck regulator. It is capable of supplying 2-A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LMR24220 does not rely on output capacitor ESR for stability. The device is designed to work exceptionally well with ceramic and other very low ESR output capacitors. It requires no loop compensation, results in a fast load-transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the on-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC undervoltage lockout, output overvoltage protection, thermal shutdown, and gate drive undervoltage lockout. The LMR24220 is available in the small DSBGA low profile chip-scale package.

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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 LMR24220 42-VIN, 2-A Step-Down Voltage Regulator in DSBGA Package datasheet (Rev. F) PDF | HTML 2019/6/17
應用說明 Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/3/25
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
應用說明 Absolute Maximum Ratings for Soldering (Rev. D) 2016/6/9
應用說明 Cap Drop Offline Supply for E-Meters 2015/6/16
應用說明 Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B) 2015/2/20
應用說明 Thermal Design Made Simple With LM43603 and LM46002 2014/9/15
應用說明 Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014/9/12
應用說明 Compensation Made SIMPLE With LM4360x, LM4600x 2014/7/29
應用說明 Automotive Line Transient Protection Circuit 2014/7/1
使用指南 AN-2193 LMR24220 Multi-Rail Reference Board (Rev. A) 2013/4/24
應用說明 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013/4/24
應用說明 AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013/4/23
應用說明 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013/4/23
應用說明 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013/4/23
應用說明 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013/4/23
應用說明 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013/4/23
應用說明 AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013/4/23
應用說明 AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013/4/23
應用說明 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013/4/23
應用說明 Input and Output Capacitor Selection 2005/9/19
更多文件說明 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005/7/12
應用說明 AN-643 EMI/RFI Board Design (Rev. B) 2004/5/3

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開發板

LMR24220EVAL — LMR24220 小體積 42V 降壓穩壓器 2A 評估板

The LMR24210/20 Step Down Switching Regulator features all required functions to implement a cost effective, efficient buck power converter capable of supplying up to 1.0A or 2.0A. The Constant On-Time (COT) regulation scheme requires no loop compensation, results in a fast load transient response (...)

使用指南: PDF
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開發板

LMR24220RB — LMR24220 5W 多軌電源參考基板

The LMR24220 Multi-Rail reference board implements an extremely compact solution. It is designed to convert from 12V or 24V rails down to typical point-of-load voltages of 3.3V, 1.8V and 1.2V. This design utilizes an LMR24220 Nano Regulator and two LMZ10501 Nano Modules to demonstrate a complete (...)

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模擬型號

LMR24220 PSpice Transient Model

SNVM217.ZIP (204 KB) - PSpice 模型
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模擬型號

LMR24220 Unencrypted PSpice Transient Model

SNVM946.ZIP (3 KB) - PSpice 模型
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YPA) 28 Ultra Librarian
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