전력 관리 선형 및 저손실(LDO) 레귤레이터

TPS7B4254-Q1

활성

오토모티브 150mA, 오프 배터리(40V), 조정 가능한 전압 추적 저손실 전압 레귤레이터

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 즉각적 대체품.
TPS7B4258-Q1 활성 피드백을 지원하는 차량용 150mA 40V 전압 추적 저손실 레귤레이터 Improved line/load transient, Lower quiescent current and faster response time.

제품 상세 정보

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.15 Output options Tracking Output Vout (max) (V) 40 Vout (min) (V) 2 PSRR at 100 KHz (dB) 43 Iq (typ) (mA) 0.06 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Thermal resistance θJA (°C/W) 45 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.15 Output options Tracking Output Vout (max) (V) 40 Vout (min) (V) 2 PSRR at 100 KHz (dB) 43 Iq (typ) (mA) 0.06 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Thermal resistance θJA (°C/W) 45 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 3A
    • Device CDM ESD classification level C6
  • Wide input voltage range: –40V to 45V (max)
  • Output voltage adjust range: 2V to 40V
  • Output current capability: 150mA
  • Very low output-tracking tolerance: ±4mV
  • Low-dropout voltage: 160mV for IOUT = 100mA
  • Low quiescent current (I(Q)):
    • < 4µA when ADJ = low
    • 60µA typical at light load
  • Extremely wide ESR range:
    • 10µF to 500µF ceramic output capacitor
    • ESR range from 1mΩ to 20Ω
  • Reverse polarity protection
  • Current-limit and thermal-shutdown protection
  • Output short-circuit-proof to ground and supply
  • Inductive clamp at OUT pin
  • 8-pin HSOIC PowerPAD™ package with exposed thermal pad
  • For a newer drop-in alternative in the HSOIC package, see the TPS7B4258-Q1 device.
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 3A
    • Device CDM ESD classification level C6
  • Wide input voltage range: –40V to 45V (max)
  • Output voltage adjust range: 2V to 40V
  • Output current capability: 150mA
  • Very low output-tracking tolerance: ±4mV
  • Low-dropout voltage: 160mV for IOUT = 100mA
  • Low quiescent current (I(Q)):
    • < 4µA when ADJ = low
    • 60µA typical at light load
  • Extremely wide ESR range:
    • 10µF to 500µF ceramic output capacitor
    • ESR range from 1mΩ to 20Ω
  • Reverse polarity protection
  • Current-limit and thermal-shutdown protection
  • Output short-circuit-proof to ground and supply
  • Inductive clamp at OUT pin
  • 8-pin HSOIC PowerPAD™ package with exposed thermal pad
  • For a newer drop-in alternative in the HSOIC package, see the TPS7B4258-Q1 device.

For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.

The TPS7B4254-Q1 is designed for automotive applications with a 45V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or as a voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to the off-board modules, the device offers a 4mV ultra-low tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under a reverse-polarity condition. The TPS7B4254-Q1 also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.

For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.

The TPS7B4254-Q1 is designed for automotive applications with a 45V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or as a voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to the off-board modules, the device offers a 4mV ultra-low tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under a reverse-polarity condition. The TPS7B4254-Q1 also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.

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기술 자료

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7개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 TPS7B4254-Q1 Automotive, 150mA, 40V, Voltage-Tracking LDO With 4mV Tracking Tolerance datasheet (Rev. C) PDF | HTML 2025. 11. 4
Product overview Robust Tracking LDOs for Powering Off Board Sensors PDF | HTML 2025. 10. 1
기능 안전 정보 TPS7B4254-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2023. 4. 28
Application brief Automotive Off-Board Sensor Power Considerations 2018. 9. 20
추가 자료 Fundamentals of designing with LDOs in auto battery direct connect applications 2017. 2. 27
애플리케이션 노트 Using Tracking LDOs as High-Side Switch (for Low-Current Applications) PDF | HTML 2016. 10. 28
애플리케이션 노트 Various Applications for Voltage-Tracking LDO 2016. 8. 3

설계 및 개발

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평가 보드

TPS7B4254EVM — TPS7B4254-Q1 전압 트래킹 LDO 레귤레이터 평가 모듈

TPS7B4254-Q1 평가 모듈(EVM)은 설계자들이 TPS7B4254QDDARQ1 전압 추적 LDO의 작동과 성능을 평가하도록 지원합니다. TPS7B4254-Q1은 HSOIC-DDA 패키지의 일체형/통합형 저손실 전압 추적기입니다. 이것은 자동차 환경에서 오프보드 센서를 제공하도록 설계되었습니다. IC는 과부하, 과열, 역방향 극성뿐만 아니라, 배터리 또는 접지 측 출력 단락에 대한 통합 보호 기능을 갖추고 있습니다.
최대 VIN=45V의 공급 전압은 높은 정확도와 최대 150mA의 부하로 조정 입력 핀 ADJ에 적용되는 (...)
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시뮬레이션 모델

TPS7B4254 PSpice Transient Model (Rev. A)

SLVMBJ6A.ZIP (96 KB) - PSpice 모델
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TPS7B4254-Q1 TINA-TI Transient Reference Design (Rev. A)

SLVMBR5A.TSC (45 KB) - TINA-TI 레퍼런스 설계
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TPS7B4254-Q1 TINA-TI Transient Spice Model (Rev. A)

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TPS7B4254-Q1 Unencrypted PSpice Transient Model

SLVMC86.ZIP (3 KB) - PSpice 모델
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HSOIC (DDA) 8 Ultra Librarian

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