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

LP2951-N

활성

100mA, 30V, 저손실 전압 레귤레이터(전원 양호 및 활성화 지원)

지금 주문
데이터 시트

LP2951-N

활성
데이터 시트 지금 주문

제품 상세 정보

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2.3 Vout (max) (V) 29 Vout (min) (V) 1.24 Fixed output options (V) 3, 3.3, 5, 29 Rating Catalog Noise (µVrms) 160 PSRR at 100 KHz (dB) 51 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 43, 56, 118, 171 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2.5 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2.3 Vout (max) (V) 29 Vout (min) (V) 1.24 Fixed output options (V) 3, 3.3, 5, 29 Rating Catalog Noise (µVrms) 160 PSRR at 100 KHz (dB) 51 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 43, 56, 118, 171 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2.5 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.
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
LP2951 활성 100mA, 30V, 저손실 전압 레귤레이터(전원 양호 및 활성화 지원) Pin-to-pin equivalent for cost-sensitive applications
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TLV709 활성 3.2-μA 공급 전류를 지원하는 150mA 30V 저손실(LDO) 선형 레귤레이터 Improved IQ (0.003μA) and accuracy of (2%)
신규 TPS7B91 활성 150mA 40V 1.5μA IQ 저손실 선형 레귤레이터 Similar device with a wider Vin range up to 40V

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
9개 모두 보기
유형 직함 날짜
* Data sheet LP295x-N Series of Adjustable Micropower Voltage Regulators datasheet (Rev. Q) PDF | HTML 2017/12/08
EVM User's guide LP2951 EVM User's Guide (Rev. A) 2018/01/05
Application note AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 2013/04/23
More literature Die D/S LP2951 MDS Series of Adjustable Micropower Voltage Regs 2012/12/20
More literature Die D/S LP2951C MWC Series Of Adj Micropower Voltage Regulators 2012/09/28
Application note Low-Voltage Current Loop Transmitter 2007/08/02
Application note Battery Charging 2007/03/21
Application note Linear and Switching Voltage Regulator Fundamental Part 1 2007/03/21
White paper Versatility of the LM5030 PWM Push-Pull Controller 2003/12/01

설계 및 개발

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

평가 보드

LP2951EVM — LP2951 고정/조정 가능 마이크로파워 저손실(LDO) 레귤레이터 평가 모듈

The LP2951 devices are bipolar low-dropout (LDO) voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V with an output load up to 100 mA. The LP2951EVM allows for flexibility in design, allowing the user to add or remove input and output capacitors, as well as (...)
사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LP2951 PSpice Transient Model (Rev. A)

SNVM037A.ZIP (23 KB) - PSpice Model
다운로드
시뮬레이션 모델

LP2951 Unencrypted PSpice Transient Model

SNVMAO3.ZIP (1 KB) - PSpice Model
다운로드
시뮬레이션 모델

LP2951_N_3P0 PSpice Transient Model

SNVMAI1.ZIP (86 KB) - PSpice Model
다운로드
시뮬레이션 모델

LP2951_N_3P0 Unencrypted PSpice Transient Model

SNVMAI0.ZIP (2 KB) - PSpice Model
다운로드
시뮬레이션 모델

LP2951_N_3P3 PSpice Transient Model

SNVMAI4.ZIP (87 KB) - PSpice Model
다운로드
시뮬레이션 모델

LP2951_N_3P3 Unencrypted PSpice Transient Model

SNVMAI5.ZIP (2 KB) - PSpice Model
다운로드
시뮬레이션 모델

LP2951_N_5P0 PSpice Transient Model

SNVMAI6.ZIP (80 KB) - PSpice Model
다운로드
시뮬레이션 모델

LP2951_N_5P0 Unencrypted PSpice Transient Model

SNVMAH9.ZIP (2 KB) - PSpice Model
다운로드
레퍼런스 디자인

TIDA-010015 — 94.5% 효율, 500W 산업용 AC-DC 레퍼런스 설계

This reference design is a compact, high efficiency, 24-V DC, 500-W reference design for industrial AC/DC power supplies. This design consists of a front-end, two-phase interleaved transition mode (TM) power factor correction (PFC) based on the UCC28064A. This minimizes the PFC inductor size and (...)
Design guide: PDF
회로도: PDF
레퍼런스 디자인

TIDA-010009 — 서보 드라이브를 위한 효율적이고 컴팩트한 24V 입력 보조 전원 공급 장치 레퍼런스 설계

This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output (...)
Design guide: PDF
회로도: PDF
레퍼런스 디자인

TIDA-00777 — 릴레이 및 차단기의 정확도가 향상된 Rogowski 코일용 액티브 통합기 레퍼런스 디자인

This reference design shows an active integrator design that covers wide-input current range for Rogowski Coil with accuracy, linearity, stability and repeatability. The integrator uses a precision amplifier with very-low offset and temperature drift. Two configurations of the integrator are (...)
Design guide: PDF
회로도: PDF
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
PDIP (P) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
WSON (NGT) 8 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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