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

LP2954

활성

250mA, 30V, 저손실 전압 레귤레이터

지금 주문
데이터시트

LP2954

활성
데이터시트 지금 주문

제품 상세 정보

Output options Adjustable Output Iout (max) (A) 0.25 Vin (max) (V) 30 Vin (min) (V) -20 Vout (max) (V) 29 Vout (min) (V) 1.23 Noise (µVrms) 80 Iq (typ) (mA) 0.21 Thermal resistance θJA (°C/W) 44 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR at 100 KHz (dB) 14 Dropout voltage (Vdo) (typ) (mV) 800 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.25 Vin (max) (V) 30 Vin (min) (V) -20 Vout (max) (V) 29 Vout (min) (V) 1.23 Noise (µVrms) 80 Iq (typ) (mA) 0.21 Thermal resistance θJA (°C/W) 44 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR at 100 KHz (dB) 14 Dropout voltage (Vdo) (typ) (mV) 800 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 TO-220 (NDE) 3 46.5328 mm² 10.16 x 4.58 TO-263 (KTT) 3 154.8384 mm² 10.16 x 15.24
  • 5-V Output within 1.2% Over Temperature
    (A Grade)
  • Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM)
  • Ensured 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Reverse Battery Protection
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Pin Compatible with LM2940 and LM340
    (5-V Version Only)
  • Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown
  • 5-V Output within 1.2% Over Temperature
    (A Grade)
  • Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM)
  • Ensured 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Reverse Battery Protection
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Pin Compatible with LM2940 and LM340
    (5-V Version Only)
  • Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown

The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250-mA load current).

The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life.

The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, small-outline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V.

Reverse battery protection is provided for the IN pin.

The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference.

Output accuracy is ensured at both room temperature and over the entire operating temperature range.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250-mA load current).

The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life.

The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, small-outline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V.

Reverse battery protection is provided for the IN pin.

The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference.

Output accuracy is ensured at both room temperature and over the entire operating temperature range.

For all available packages, see the orderable addendum at the end of the data sheet.
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기술 문서

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모두 보기3
유형 직함 날짜
* Data sheet LP2954, LP2954A 5-V and Adjustable Micropower LDOs datasheet (Rev. E) PDF | HTML 2016/07/28
Application note AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 2013/04/23
Application note Linear and Switching Voltage Regulator Fundamental Part 1 2007/03/21

설계 및 개발

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

레퍼런스 디자인

TIDA-00202 — HIPERFACE 위치 인코더 인터페이스 레퍼런스 디자인

The TIDA-00202 reference design implements an EMC compliant industrial hybrid analog and digital interface to a HIPERFACE position encoder. A 3.3V supply RS485 transceiver with IEC-ESD and IEC-EFT protection is used for the bidirectional parameter channel. For the analog sin/cos signal (...)
Design guide: PDF
회로도: PDF
패키지 핀 다운로드
SOIC (D) 8 옵션 보기
TO-220 (NDE) 3 옵션 보기
TO-263 (KTT) 3 옵션 보기
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

권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.

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