홈 전원 관리 AC/DC & DC/DC converters (integrated FET)
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전원 관리
AC/DC & DC/DC converters (integrated FET)

LM2840-Q1

활성

SIMPLE SWITCHER® 42V, 100mA 스텝다운 DC/DC 레귤레이터(Thin SOT-23)

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데이터시트

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TPS560430-Q1 활성 차량용 공인 SIMPLE SWITCHER® 4V~36V, 600mA 동기식 스텝다운 컨버터 PFM and PWM selectable options.

LM2840-Q1

활성
데이터시트 지금 주문

제품 상세 정보

Iout (max) (A) 0.1 Vin (min) (V) 4.5 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 950 Switching frequency (max) (kHz) 1500 Features Enable, Over Current Protection, Soft Start Fixed Control mode current mode Vout (min) (V) 0.765 Vout (max) (V) 34 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0013
Iout (max) (A) 0.1 Vin (min) (V) 4.5 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 950 Switching frequency (max) (kHz) 1500 Features Enable, Over Current Protection, Soft Start Fixed Control mode current mode Vout (min) (V) 0.765 Vout (max) (V) 34 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0013
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 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 IQ: 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-Q1 (or LM2841-Q1/42-Q1) with the WEBENCH® Power Designer
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 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 IQ: 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-Q1 (or LM2841-Q1/42-Q1) with the WEBENCH® Power Designer

The LM284x-Q1 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 RDSON (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-Q1 is optimized for up to 100 mA, the LM2841-Q1 for up to 300 mA, and the LM2842-Q1 for up to 600‑mA load currents. They all have a 0.765-V nominal feedback voltage.

Additional features include: thermal shutdown, VIN undervoltage lockout, and gate-drive undervoltage lockout. The LM284x-Q1 are available in a low-profile SOT-6L package.

The LM284x-Q1 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 RDSON (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-Q1 is optimized for up to 100 mA, the LM2841-Q1 for up to 300 mA, and the LM2842-Q1 for up to 600‑mA load currents. They all have a 0.765-V nominal feedback voltage.

Additional features include: thermal shutdown, VIN undervoltage lockout, and gate-drive undervoltage lockout. The LM284x-Q1 are available in a low-profile SOT-6L package.
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기술 문서

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모두 보기15
유형 직함 날짜
* Data sheet LM284x-Q1 Automotive 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 PDF | HTML 2019/04/25
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/03/25
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014/09/12
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013/04/24
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013/04/23
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013/04/23
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013/04/23
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013/04/23
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013/04/23
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013/04/23
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013/04/23
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013/04/23
Application note Input and Output Capacitor Selection 2005/09/19
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005/07/12
Application note AN-643 EMI/RFI Board Design (Rev. B) 2004/05/03

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시뮬레이션 모델

LM2840X-Q1 PSpice Transient Model

SNVM329.ZIP (115 KB) - PSpice Model
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시뮬레이션 모델

LM2840X-Q1 Unencrypted PSpice Transient Model

SNVMAL8.ZIP (2 KB) - PSpice Model
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시뮬레이션 모델

LM2840Y-Q1 PSpice Transient Model

SNVM331.ZIP (111 KB) - PSpice Model
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시뮬레이션 모델

LM2840Y-Q1 Unencrypted PSpice Transient Model

SNVMAL7.ZIP (2 KB) - PSpice Model
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패키지 핀 다운로드
SOT-23-THN (DDC) 6 옵션 보기
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  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
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  • 인증 요약
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