전원 관리 선형 및 저손실(LDO) 레귤레이터

LP38843

활성

3A, 낮은 입력 전압(1.01V), 초저손실 전압 레귤레이터(활성화 지원)

제품 상세 정보

Output options Fixed Output Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 1.01 Vout (max) (V) 1.5 Vout (min) (V) 0.8 Fixed output options (V) 0.8, 1.2, 1.5 Noise (µVrms) 90 Iq (typ) (mA) 32 Thermal resistance θJA (°C/W) 35 Rating Catalog Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 29 Dropout voltage (Vdo) (typ) (mV) 210 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 1.01 Vout (max) (V) 1.5 Vout (min) (V) 0.8 Fixed output options (V) 0.8, 1.2, 1.5 Noise (µVrms) 90 Iq (typ) (mA) 32 Thermal resistance θJA (°C/W) 35 Rating Catalog Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 29 Dropout voltage (Vdo) (typ) (mV) 210 Operating temperature range (°C) -40 to 125
TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Ideal for Conversion From 1.8V or 1.5V Inputs
  • Designed for use with low ESR Ceramic Capacitors
  • 0.8V, 1.2V and 1.5V Standard Voltages Available
  • Ultra Low Dropout Voltage (210mV at 3A typ)
  • 1.5% Initial Output Accuracy
  • Load Regulation of 0.1%/A (Typical)
  • 30nA Quiescent Current in Shutdown (Typical)
  • Low Ground Pin Current at all Loads
  • Over Temperature/Over Current Protection
  • Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

  • Ideal for Conversion From 1.8V or 1.5V Inputs
  • Designed for use with low ESR Ceramic Capacitors
  • 0.8V, 1.2V and 1.5V Standard Voltages Available
  • Ultra Low Dropout Voltage (210mV at 3A typ)
  • 1.5% Initial Output Accuracy
  • Load Regulation of 0.1%/A (Typical)
  • 30nA Quiescent Current in Shutdown (Typical)
  • Low Ground Pin Current at all Loads
  • Over Temperature/Over Current Protection
  • Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

The LP38843 is a high-current, fast-response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220 and DDPAK/TO-263 packages.

Dropout Voltage: 210 mV (typ) at 3A load current.

Quiescent Current: 30 mA (typ) at full load.

Shutdown Current: 30 nA (typ) when S/D pin is low.

Precision Output Voltage: 1.5% room temperature accuracy.

The LP38843 is a high-current, fast-response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220 and DDPAK/TO-263 packages.

Dropout Voltage: 210 mV (typ) at 3A load current.

Quiescent Current: 30 mA (typ) at full load.

Shutdown Current: 30 nA (typ) when S/D pin is low.

Precision Output Voltage: 1.5% room temperature accuracy.

다운로드 스크립트와 함께 비디오 보기 동영상

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
1개 모두 보기
유형 직함 날짜
* Data sheet LP38843 3A Ultra Low Dropout Linear Reg Stable w/Ceramic Output Cap datasheet (Rev. C) 2013/04/02

설계 및 개발

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

패키지 CAD 기호, 풋프린트 및 3D 모델
TO-220 (KC) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian

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

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상