홈 전원 관리 선형 및 저손실(LDO) 레귤레이터
홈
전원 관리
선형 및 저손실(LDO) 레귤레이터

LM340

활성

1.5A, 35V, 선형 전압 레귤레이터

지금 주문
데이터 시트

LM340

활성
데이터 시트 지금 주문

제품 상세 정보

Output options Fixed Output Iout (max) (A) 1.5 Vin (max) (V) 35 Vin (min) (V) 7.5 Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 12, 15 Noise (µVrms) 40 Iq (typ) (mA) 8 Thermal resistance θJA (°C/W) 24 Rating Catalog Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2.5 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) 0 to 125
Output options Fixed Output Iout (max) (A) 1.5 Vin (max) (V) 35 Vin (min) (V) 7.5 Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 12, 15 Noise (µVrms) 40 Iq (typ) (mA) 8 Thermal resistance θJA (°C/W) 24 Rating Catalog Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2.5 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) 0 to 125
SOT-223 (DCY) 4 45.5 mm² 6.5 x 7 TO-220 (NDE) 3 46.5328 mm² 10.16 x 4.58 TO-220 (NDG) 3 193.548 mm² 10.16 x 19.05 TO-263 (KTT) 3 154.8384 mm² 10.16 x 15.24
  • Output Current up to 1.5 A
  • Available in Fixed 5-V, 12-V, and 15-V Options
  • Output Voltage Tolerances of ±2% at TJ = 25°C (LM340A)
  • Line Regulation of 0.01% / V of at 1-A Load (LM340A)
  • Load Regulation of 0.3% / A (LM340A)
  • Internal Thermal Overload, Short-Circuit and SOA Protection
  • Available in Space-Saving SOT-223 Package
  • Output Capacitance Not Required for Stability
  • Output Current up to 1.5 A
  • Available in Fixed 5-V, 12-V, and 15-V Options
  • Output Voltage Tolerances of ±2% at TJ = 25°C (LM340A)
  • Line Regulation of 0.01% / V of at 1-A Load (LM340A)
  • Load Regulation of 0.3% / A (LM340A)
  • Internal Thermal Overload, Short-Circuit and SOA Protection
  • Available in Space-Saving SOT-223 Package
  • Output Capacitance Not Required for Stability

The LM340 and LM7805 Family monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.5-A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

LM7805 is also available in a higher accuracy and better performance version (LM340A). Refer to LM340A specifications in the LM340A Electrical Characterisitcs table.

The LM340 and LM7805 Family monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.5-A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

LM7805 is also available in a higher accuracy and better performance version (LM340A). Refer to LM340A specifications in the LM340A Electrical Characterisitcs table.

filter 기타 선형 및 저손실(LDO) 레귤레이터 찾기
다운로드 스크립트와 함께 비디오 보기 동영상

관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 드롭인 대체품
LM7800 활성 1.5A, 30V, 선형 전압 레귤레이터 Pin-to-pin alternate with lower input voltage
UA78 활성 1.5A, 38V, 선형 전압 레귤레이터 Pin-to-pin equivalent for cost-sensitive applications

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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19개 모두 보기
유형 직함 날짜
* Data sheet LM340, LM340A and LM7805 Family Wide VIN 1.5-A Fixed Voltage Regulators datasheet (Rev. L) PDF | HTML 2016/09/29
Application note A Topical Index of TI LDO Application Notes (Rev. F) 2019/06/27
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 2018/03/21
Analog Design Journal Industrial-strength design considerations to prevent thermal and EMI damage 2014/04/11
Application note AB-12 Wide Adjustable Range PNP Voltage Regulator (Rev. B) 2013/05/06
Application note AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) 2013/05/06
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 2013/05/06
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 2013/05/06
Application note AN-256 Circuitry for Inexpensive Relative Humidity Measurement (Rev. B) 2013/05/06
Application note AN-298 Isolation Techniques for Signal Conditioning (Rev. B) 2013/05/06
Application note AN-182 Improving Power Supply Reliability with IC Power Regulators (Rev. B) 2013/05/05
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 2013/05/05
Application note Super Matched Bipolar Transistor Pair Sets New Standards for Drift and Noise (Rev. B) 2013/05/05
More literature Die D/S LM7808C MDC Series 3-Terminal Positive Regulators 2012/09/28
More literature Die D/S LM6172 MDC Dual Hi Spd, Low Pwr, Low Distortion Voltage Feedback Amp 2012/09/27
Application note Packaging Limits Range of Linear Regulators 2010/05/08
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 2008/06/04
User guide A User's Guide to Compensating Low-Dropout Regulators 2007/03/21
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 1999/10/21

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

패키지 핀 CAD 기호, 풋프린트 및 3D 모델
SOT-223 (DCY) 4 Ultra Librarian
TO-220 (NDE) 3 Ultra Librarian
TO-220 (NDG) 3 Ultra Librarian
TO-263 (KTT) 3 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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