전원 관리 선형 및 저손실(LDO) 레귤레이터

LP38851

활성

800mA, 낮은 VIN(0.915V), 조정 가능 초저손실 전압 레귤레이터(활성화 지원)

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TPS74801 활성 전원 양호 및 활성화를 지원하는 1.5A, 낮은 VIN(0.8V) 조정 가능 저손실(LDO) 전압 레귤레이터 Higher current with improved PSRR and accuracy

제품 상세 정보

Output options Adjustable Output Iout (max) (A) 0.8 Vin (max) (V) 5.5 Vin (min) (V) 0.915 Vout (max) (V) 1.8 Vout (min) (V) 0.8 Noise (µVrms) 90 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 60 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 115 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.8 Vin (max) (V) 5.5 Vin (min) (V) 0.915 Vout (max) (V) 1.8 Vout (min) (V) 0.8 Noise (µVrms) 90 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 60 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 115 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 TO-220 (NDZ) 7 82.6008 mm² 10.16 x 8.13 TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24
  • Adjustable VOUT Range of 0.80V to 1.8V
  • Wide VBIAS Supply Operating Range of 3.0V to 5.5V
  • Stable with 10µF Ceramic Capacitors
  • Dropout Voltage of 115 mV (Typical) at 800 mA Load Current
  • Precision VADJ across All Line and Load Conditions:
    • ±1.5% VADJ for TJ = 25°C
    • ±2.0% VADJ for 0°C ≤ TJ ≤ +125°C
    • ±3.0% VADJ for -40°C ≤ TJ ≤ +125°C
  • Over-Temperature and Over-Current Protection
  • Available in 8-Lead SO PowerPad,
    7-Lead SFM and 7-Lead PFM Packages
  • −40°C to +125°C Operating Junction Temperature Range

All trademarks are the property of their respective owners.

  • Adjustable VOUT Range of 0.80V to 1.8V
  • Wide VBIAS Supply Operating Range of 3.0V to 5.5V
  • Stable with 10µF Ceramic Capacitors
  • Dropout Voltage of 115 mV (Typical) at 800 mA Load Current
  • Precision VADJ across All Line and Load Conditions:
    • ±1.5% VADJ for TJ = 25°C
    • ±2.0% VADJ for 0°C ≤ TJ ≤ +125°C
    • ±3.0% VADJ for -40°C ≤ TJ ≤ +125°C
  • Over-Temperature and Over-Current Protection
  • Available in 8-Lead SO PowerPad,
    7-Lead SFM and 7-Lead PFM Packages
  • −40°C to +125°C Operating Junction Temperature Range

All trademarks are the property of their respective owners.

The LP38851-ADJ is a high current, fast response regulator which can maintain output voltage regulation with extremely low 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 this device makes it suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The part is available in PSOP 8–pin, SFM 7–pin, and TO-263 7-pin packages.

  • Dropout Voltage: 115 mV (typical) at 800 mA load current
  • Low Ground Pin Current: 10 mA (typical) at 800 mA load current
  • Soft-Start: Programmable Soft-Start time
  • Precision ADJ Voltage: ±1.5% for TJ = 25°C, and ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions

The LP38851-ADJ is a high current, fast response regulator which can maintain output voltage regulation with extremely low 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 this device makes it suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The part is available in PSOP 8–pin, SFM 7–pin, and TO-263 7-pin packages.

  • Dropout Voltage: 115 mV (typical) at 800 mA load current
  • Low Ground Pin Current: 10 mA (typical) at 800 mA load current
  • Soft-Start: Programmable Soft-Start time
  • Precision ADJ Voltage: ±1.5% for TJ = 25°C, and ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions

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관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TLV759P 활성 1A, 저 IQ, 높은 정확도, 조정 가능한 초저 손실 전압 레귤레이터(활성화) 1-A LDO regulator with lower IQ and 1% accuracy in a 2-mm by 2-mm package

기술 문서

star =TI에서 선정한 이 제품의 인기 문서
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모두 보기4
유형 직함 날짜
* Data sheet 800 mA Fast-Response High-Accuracy Adj LDO Linear Reg w/ Enable & Soft-Start datasheet (Rev. C) 2013/04/05
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 2018/03/21
Application note AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) 2013/04/24

설계 및 개발

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패키지 다운로드
HSOIC (DDA) 8 옵션 보기
TO-220 (NDZ) 7 옵션 보기
TO-263 (KTW) 7 옵션 보기

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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