LM2841

활성

4.5V~42V, 300mA SIMPLE SWITCHER ® 벅 컨버터(Thin SOT-23)

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데이터 시트

document-pdfAcrobat LM284x SIMPLE SWITCHER® 4.5-V to 42-V Input, 0.1-, 0.3-, or 0.6-A Output Step-Down DC/DC Regulator in Thin SOT datasheet (Rev. K) (영어) PDF | HTML

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LMR54406

활성

4V~36V, 0.6A, 80µA IQ 동기 벅 SIMPLE SWITCHER® 전력 컨버터 Smaller footprint, lower quiescent current, FPWM and PFM options.

LM2841

활성

데이터 시트

지금 주문하기

제품 상세 정보

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.3

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

34

Vout (min) (V)

0.765

Features

Enable, Overcurrent protection

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0013

Duty cycle (max) (%)

94

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.3

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

34

Vout (min) (V)

0.765

Features

Enable, Overcurrent protection

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0013

Duty cycle (max) (%)

94

SOT-23-THN (DDC)

6

8.12 mm² (2.9 mm × 2.8 mm)

Input voltage 4.5 V to 42 V
Output current options of 100 mA, 300 mA, and 600 mA
Feedback pin voltage of 0.765 V
550-kHz (X) or 1.25-MHz (Y) switching frequency
Low shutdown I_Q: 16-µA typical
Short-circuit protected
Internally compensated
Soft-start circuitry
Small overall solution size (SOT-6L package)
Create a custom design using the LM2840 (or LM2841/42) with the WEBENCH^® Power Designer

Input voltage 4.5 V to 42 V
Output current options of 100 mA, 300 mA, and 600 mA
Feedback pin voltage of 0.765 V
550-kHz (X) or 1.25-MHz (Y) switching frequency
Low shutdown I_Q: 16-µA typical
Short-circuit protected
Internally compensated
Soft-start circuitry
Small overall solution size (SOT-6L package)
Create a custom design using the LM2840 (or LM2841/42) with the WEBENCH^® Power Designer

The LM284x SIMPLE SWITCHER™ devices are PWM DC/DC buck (step-down) regulators. With an input range from 4.5 V to 42 V, they are suitable for a wide range of applications, such as power conditioning from unregulated sources. They feature a low R_DSON (0.9‑Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 550 kHz (X option) and 1.25 MHz (Y option), allowing the use of small external components while still being able to have low output voltage ripple. Soft start can be implemented using the shutdown (SHDN) pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.

The LM2840 is optimized for up to 100 mA, the LM2841 for up to 300 mA, and the LM2842 for up to 600‑mA load currents. They all have a 0.765-V nominal feedback voltage.

Additional features include: thermal shutdown, V_IN undervoltage lockout, and gate-drive undervoltage lockout. The LM284x are available in a low-profile SOT-6L package.

The LM284x SIMPLE SWITCHER™ devices are PWM DC/DC buck (step-down) regulators. With an input range from 4.5 V to 42 V, they are suitable for a wide range of applications, such as power conditioning from unregulated sources. They feature a low R_DSON (0.9‑Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 550 kHz (X option) and 1.25 MHz (Y option), allowing the use of small external components while still being able to have low output voltage ripple. Soft start can be implemented using the shutdown (SHDN) pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.

The LM2840 is optimized for up to 100 mA, the LM2841 for up to 300 mA, and the LM2842 for up to 600‑mA load currents. They all have a 0.765-V nominal feedback voltage.

Additional features include: thermal shutdown, V_IN undervoltage lockout, and gate-drive undervoltage lockout. The LM284x are available in a low-profile SOT-6L package.

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LMR14203

활성

4.5V~42V, 0.3A 스텝다운 DC/DC 스위칭 레귤레이터(SOT-23) Next-generation 4.5-V to 42-V, 300-mA SIMPLE SWITCHER buck converter for cost-optimized solution.

기술 자료

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19개 모두 보기

상위 문서	유형	직함	형식 옵션	날짜
*	데이터 시트	LM284x SIMPLE SWITCHER® 4.5-V to 42-V Input, 0.1-, 0.3-, or 0.6-A Output Step-Down DC/DC Regulator in Thin SOT datasheet (Rev. K)	PDF \| HTML	2019. 4. 9
	애플리케이션 노트	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	2024. 3. 25
	기술 문서	Quantifying the value of wide VIN	PDF \| HTML	2016. 6. 15
	기술 문서	DC/DC converter datasheets – System losses demystified	PDF \| HTML	2016. 4. 25
	기술 문서	DC/DC converter datasheets – System efficiency demystified	PDF \| HTML	2016. 4. 18
	애플리케이션 노트	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		2014. 9. 12
	애플리케이션 노트	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		2013. 4. 24
	애플리케이션 노트	AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A)		2013. 4. 23
	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

LM2841YMK-ADJEV — LM2841용 평가 보드

The LM2841 evaluation board is designed to provide the design engineer with a fully functional power converter based on the buck topology to evaluate the LM2841 series of buck regulators. The evaluation board comes populated with the LM2841YMK-ADJL but can easily be modified to accommodate any of (...)

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패키지	핀	CAD 기호, 풋프린트 및 3D 모델
SOT-23-THN (DDC)	6	Ultra Librarian

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LM2841

4.5V~42V, 300mA SIMPLE SWITCHER ® 벅 컨버터(Thin SOT-23)

이 제품의 최신 버전이 있습니다

비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀.

LM2841

제품 상세 정보

관심 가지실만한 유사 제품

다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.

기술 자료

설계 및 개발

LM2841YMK-ADJEV — LM2841용 평가 보드

LM2841X PSpice Average Model

LM2841X PSpice Transient Model

LM2841X TINA-TI Reference Design

LM2841X Unencrypted PSpice Average Model

LM2841X Unencrypted PSpice Transient Model

LM2841Y PSpice Average Model

LM2841Y PSpice Transient Model

LM2841Y TINA-TI Reference Design

LM2841Y Unencrypted PSpice Average Model

LM2841Y Unencrypted PSpice Transient Model

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