LM22674

現行

具精密啓用功能的 4.5V 至 42V、500mA SIMPLE SWITCHER® 降壓轉換器

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document-pdfAcrobat LM22674/-Q1 42 V, 500 mA SIMPLE SWITCHER® Step-Down Voltage Regulator with Features datasheet (Rev. M) (英文) PDF | HTML

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TLVM13620

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現行

採用 5-mm x 5.5-mm x 4-mm QFN 封裝的 4.2-V 至 60-V 輸入、1-V 至 16-V 輸出、0.6-A 降壓模組 Smaller design with an integrated-inductor power module.

LM22674

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.5

Vin (max) (V)

Vin (min) (V)

4.5

Vout (max) (V)

Vout (min) (V)

1.285

Features

Enable, Overcurrent protection

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0034

Duty cycle (max) (%)

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.5

Vin (max) (V)

Vin (min) (V)

4.5

Vout (max) (V)

Vout (min) (V)

1.285

Features

Enable, Overcurrent protection

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0034

Duty cycle (max) (%)

HSOIC (DDA)

29.4 mm² (4.9 mm × 6 mm)

Wide Input Voltage Range: 4.5 V to 42 V
Internally Compensated Voltage Mode Control
Stable with Low ESR Ceramic Capacitors
200 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
Switching Frequency of 500 kHz
–40°C to 125°C Operating Junction
Temperature Range
Precision Enable Pin
Integrated Boot-Strap Diode
Integrated Soft-Start
Fully WEBENCH^® Enabled
LM22674-Q1 is an Automotive Grade Product
that is AEC-Q100 Grade 1 Qualified
(–40°C to +125°C Operating Junction
Temperature)
SO PowerPAD (Exposed Pad)

Wide Input Voltage Range: 4.5 V to 42 V
Internally Compensated Voltage Mode Control
Stable with Low ESR Ceramic Capacitors
200 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
Switching Frequency of 500 kHz
–40°C to 125°C Operating Junction
Temperature Range
Precision Enable Pin
Integrated Boot-Strap Diode
Integrated Soft-Start
Fully WEBENCH^® Enabled
LM22674-Q1 is an Automotive Grade Product
that is AEC-Q100 Grade 1 Qualified
(–40°C to +125°C Operating Junction
Temperature)
SO PowerPAD (Exposed Pad)

The LM22674 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 capable of providing up to 500 mA 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. A switching frequency of 500 kHz allows for small external components and good transient response. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22674 also has built in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22674 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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重要文件	類型	標題	格式選項	日期
*	資料表	LM22674/-Q1 42 V, 500 mA SIMPLE SWITCHER® Step-Down Voltage Regulator with Features datasheet (Rev. M)	PDF \| HTML	2014/11/4
	應用說明	SIMPLE SWITCHER Regulators Take Over Automotive Applications (Rev. B)	PDF \| HTML	2024/10/9
	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
	技術文章	Quantifying the value of wide VIN	PDF \| HTML	2016/6/15
	技術文章	DC/DC converter datasheets – System losses demystified	PDF \| HTML	2016/4/25
	技術文章	DC/DC converter datasheets – System efficiency demystified	PDF \| HTML	2016/4/18
	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	AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)		2013/5/6
	應用說明	AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B)		2013/5/6
	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-2020 Thermal Design By Insight, Not Hindsight (Rev. C)		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
	設計指南	SIMPLE SWITCHER® Design Guide		2011/4/11
	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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LM22671EVAL — 具有頻率調整或同步和精密啟用的 LM22671 0.5A SIMPLE SWITCHER 穩壓器 EVM

The LM22671 evaluation board is designed to demonstrate the capabilities of the LM22671switching regulator. The LM22671 evaluation board is configured to provide an output voltage of 3.3V up to 500 mA load current with an input voltage range of 4.5V to 42V. The typical operating frequency is 500 (...)

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