LM22677

現行

具頻率同步的 SIMPLE SWITCHER® 4.5V 至 42V、5A 降壓 DC/DC 切換穩壓器

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
LM62460 現行 針對功率密度和低 EMI 進行最佳化的 6-A 降壓轉換器 Smaller footprint, lower quiescent current, and lower EMI.
LMR51450 現行 36-V、5-A 同步降壓轉換器 Newer coverter with better feature set
TLVM13660 現行 採用 5 公釐 x 5.5 公釐增強型 HotRod™ QFN 的 36-V 輸入、1-V 至 6-V 輸出、6- A 降壓電源模組 Save board space, simplify design and speed time to market with an integrated-inductor power module.

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) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features Enable, Frequency synchronization, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.285 Vout (max) (V) 37 Iq (typ) (µA) 3400 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features Enable, Frequency synchronization, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.285 Vout (max) (V) 37 Iq (typ) (µA) 3400 Duty cycle (max) (%) 90
TO-263 (NDR) 7 142.3416 mm² 10.16 x 14.01
  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable With Low ESR Ceramic Capacitors
  • 100-mΩ N-Channel MOSFET
  • Output Voltage Options:
    • -ADJ (Outputs as Low as 1.285 V)
    • -5.0 (Output Fixed to 5 V)
  • ±1.5% Feedback Reference Accuracy
  • 500-kHz Default Switching Frequency
  • Adjustable Switching Frequency and
    Synchronization
  • –40°C to +125°C Operating Junction Temperature
    Range
  • Precision Enable Input
  • Integrated Boot-Strap Diode
  • Integrated Soft-Start
  • Fully WEBENCH® Enabled
  • LM22677-Q1 is an Automotive-Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C to
    +125°C Operating Junction Temperature)
  • NDR (Exposed Pad)
  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable With Low ESR Ceramic Capacitors
  • 100-mΩ N-Channel MOSFET
  • Output Voltage Options:
    • -ADJ (Outputs as Low as 1.285 V)
    • -5.0 (Output Fixed to 5 V)
  • ±1.5% Feedback Reference Accuracy
  • 500-kHz Default Switching Frequency
  • Adjustable Switching Frequency and
    Synchronization
  • –40°C to +125°C Operating Junction Temperature
    Range
  • Precision Enable Input
  • Integrated Boot-Strap Diode
  • Integrated Soft-Start
  • Fully WEBENCH® Enabled
  • LM22677-Q1 is an Automotive-Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C to
    +125°C Operating Junction Temperature)
  • NDR (Exposed Pad)

The LM22677 switching regulator provides all of the functions necessary to implement an efficient high-voltage step-down (buck) regulator using a minimum of external components. This easy-to-use regulator incorporates a 42-V N-channel MOSFET switch that can provide up to 5 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5-V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz, thus allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typical). The LM22677 also has built-in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22677 device is a member of Texas Instruments’ SIMPLE SWITCHER family. The SIMPLE SWITCHER® concept provides for an easy-to-use complete design using a minimum number of external components and the TI WEBENCH design tool. TI's WEBENCH tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in.

The LM22677 switching regulator provides all of the functions necessary to implement an efficient high-voltage step-down (buck) regulator using a minimum of external components. This easy-to-use regulator incorporates a 42-V N-channel MOSFET switch that can provide up to 5 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5-V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz, thus allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typical). The LM22677 also has built-in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22677 device is a member of Texas Instruments’ SIMPLE SWITCHER family. The SIMPLE SWITCHER® concept provides for an easy-to-use complete design using a minimum number of external components and the TI WEBENCH design tool. TI's WEBENCH tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in.

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類型 標題 日期
* Data sheet LM22677/-Q1 42-V, 5-A SIMPLE SWITCHER, Step-Down Voltage Regulator With Features datasheet (Rev. O) PDF | HTML 2015年 8月 11日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Technical article Quantifying the value of wide VIN PDF | HTML 2016年 6月 15日
Technical article DC/DC converter datasheets – System losses demystified PDF | HTML 2016年 4月 25日
Technical article DC/DC converter datasheets – System efficiency demystified PDF | HTML 2016年 4月 18日
Application note Know Your Limits 2015年 6月 2日
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014年 9月 12日
Application note AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B) 2013年 5月 6日
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 2013年 5月 6日
Application note AN-1797 TO-263 THIN Package (Rev. A) 2013年 4月 24日
EVM User's guide AN-1892 LM22677 Evaluation Board (Rev. D) 2013年 4月 24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-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013年 4月 23日
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013年 4月 23日
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013年 4月 23日
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013年 4月 23日
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013年 4月 23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-2020 Thermal Design By Insight, Not Hindsight (Rev. C) 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
Application note SIMPLE SWITCHER Regulators Take Over Automotive Applications (Rev. A) 2013年 4月 23日
Design guide SIMPLE SWITCHER® Design Guide 2011年 4月 11日
Application note Input and Output Capacitor Selection 2005年 9月 19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

LM22677EVAL — 具有頻率調整或同步和精密啟用的 LM22677 5A SIMPLE SWITCHER 穩壓器 EVM

The LM22677 evaluation board is designed to demonstrate the capabilities of the LM22677 switching regulator. The LM22677 evaluation board schematic shown in Figure 1 is configured to provide an output voltage of 3.3V up to 5A load current with an input voltage range of 4.5V to 42V. Due to the low (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM22677-5.0 PSpice Average Model

SNVM276.ZIP (50 KB) - PSpice Model
模擬型號

LM22677-5.0 PSpice Transient Model

SNVM275.ZIP (204 KB) - PSpice Model
模擬型號

LM22677-5.0 Unencrypted PSpice Average Model

SNVM823.ZIP (1 KB) - PSpice Model
模擬型號

LM22677-5.0 Unencrypted PSpice Transient Model

SNVM822.ZIP (4 KB) - PSpice Model
模擬型號

LM22677-ADJ PSpice Average Model (Rev. A)

SNVM078A.ZIP (59 KB) - PSpice Model
模擬型號

LM22677-ADJ PSpice Transient Model

SNVM072.ZIP (194 KB) - PSpice Model
模擬型號

LM22677-ADJ TINA-TI Average Reference Design (Rev. A)

SNVM080A.TSC (143 KB) - TINA-TI Reference Design
模擬型號

LM22677-ADJ TINA-TI Average Spice Model (Rev. A)

SNVM079A.ZIP (8 KB) - TINA-TI Spice Model
模擬型號

LM22677-ADJ TINA-TI Line Transient Reference Design

SNVM075.TSC (183 KB) - TINA-TI Reference Design
模擬型號

LM22677-ADJ TINA-TI Load Transient Reference Design

SNVM077.TSC (187 KB) - TINA-TI Reference Design
模擬型號

LM22677-ADJ TINA-TI Startup Transient Reference Design

SNVM076.TSC (183 KB) - TINA-TI Reference Design
模擬型號

LM22677-ADJ TINA-TI Steady State Transient Reference Design

SNVM074.TSC (213 KB) - TINA-TI Reference Design
模擬型號

LM22677-ADJ TINA-TI Transient Spice Model

SNVM073.ZIP (21 KB) - TINA-TI Spice Model
模擬型號

LM22677-ADJ Unencrypted PSpice Average Model

SNVM887.ZIP (1 KB) - PSpice Model
模擬型號

LM22677-ADJ Unencrypted PSpice Transient Model

SNVM886.ZIP (4 KB) - PSpice Model
計算工具

LM2267X-22680DESIGN-CALC — LM2267x、LM22680 快速入門 Simple Switcher 元件計算機

參考設計

TIDA-00162 — 適用於車用環景顯示系統的多攝影機、視訊介面及控制解決方案

TIDA-00162 incorporates the  complete  camera module, video interface  and control functionality for surround view systems for automotive applications. The reference design includes four 1 Mp cameras (OmniVision OV10635), four Serializer+Power boards and a daughter board with 6 (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
TO-263 (NDR) 7 Ultra Librarian

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

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