LMR24220

활성

42Vin, 2.0A 스텝다운 전압 레귤레이터(micro SMD)

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document-pdfAcrobat LMR24220 42-VIN, 2-A Step-Down Voltage Regulator in DSBGA Package datasheet (Rev. F) (영어) PDF | HTML

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LMR51420

활성

40µA IQ를 지원하는 SIMPLE SWITCHER® 전력 컨버터 4.5V~65V 2A 동기식 벅 Smaller footprint in SOT-23 package, integrated compensation and synchronous rectification.

LMR24220

활성

데이터 시트

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제품 상세 정보

Rating

Catalog

Topology

Buck

Iout (max) (A)

Vin (max) (V)

Vin (min) (V)

4.5

Vout (max) (V)

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) (%)

Rating

Catalog

Topology

Buck

Iout (max) (A)

Vin (max) (V)

Vin (min) (V)

4.5

Vout (max) (V)

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) (%)

DSBGA (YPA)

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 R_DS(ON) Synchronous MOSFETs for High Efficiency
Up to 1-MHz Switching Frequency
Low Shutdown I_Q, 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 R_DS(ON) Synchronous MOSFETs for High Efficiency
Up to 1-MHz Switching Frequency
Low Shutdown I_Q, 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 V_CC 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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23개 모두 보기

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

설계 및 개발

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평가 보드

LMR24220EVAL — LMR24220 소형 풋프린트 42V 벅 레귤레이터 2A 평가 보드

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 (...)

사용 설명서: PDF

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