전원 관리 선형 및 저손실(LDO) 레귤레이터

TPS7B4255-Q1

활성

트래킹 허용 오차 5mV의 오토모티브, 70mA 40V 전압 추적 LDO(저손실) 레귤레이터

제품 상세 정보

Output options Tracking Output Iout (max) (A) 0.07 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 40 Vout (min) (V) 2 Noise (µVrms) 150 Iq (typ) (mA) 0.031 Thermal resistance θJA (°C/W) 127, 176 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -40 to 125
Output options Tracking Output Iout (max) (A) 0.07 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 40 Vout (min) (V) 2 Noise (µVrms) 150 Iq (typ) (mA) 0.031 Thermal resistance θJA (°C/W) 127, 176 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 SOT-23 (DYB) 5 7.911 mm² 2.93 x 2.7
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
    • Junction temperature: –40°C to +150°C, T J
  • Wide input operating voltage range (3 V to 40 V):
    • Absolute maximum input voltage range: –40 V to +45 V
  • Wide output voltage range: 2 V to 40 V
  • Maximum output current: 70 mA
  • Very-tight, output-tracking tolerance: 5 mV (max)
  • Low dropout voltage: 500 mV (max) at 70 mA
  • Combined reference and enable functionalities
  • Low quiescent current at light load: 35 µA
  • Wide C OUT and ESR range:
    • Stable with 1-µF to 200-µF ceramic output capacitor, 1-mΩ to 3-Ω ESR
  • Integrated protection features:
    • Reverse current protection
    • Reverse polarity protection
    • Overtemperature protection
    • Protection against output short-circuit to ground and supply
  • Available in two 5-pin SOT-23 packages:
    • Standard SOT-23 (DBV)
    • Thermally enhanced SOT-23 (DYB)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
    • Junction temperature: –40°C to +150°C, T J
  • Wide input operating voltage range (3 V to 40 V):
    • Absolute maximum input voltage range: –40 V to +45 V
  • Wide output voltage range: 2 V to 40 V
  • Maximum output current: 70 mA
  • Very-tight, output-tracking tolerance: 5 mV (max)
  • Low dropout voltage: 500 mV (max) at 70 mA
  • Combined reference and enable functionalities
  • Low quiescent current at light load: 35 µA
  • Wide C OUT and ESR range:
    • Stable with 1-µF to 200-µF ceramic output capacitor, 1-mΩ to 3-Ω ESR
  • Integrated protection features:
    • Reverse current protection
    • Reverse polarity protection
    • Overtemperature protection
    • Protection against output short-circuit to ground and supply
  • Available in two 5-pin SOT-23 packages:
    • Standard SOT-23 (DBV)
    • Thermally enhanced SOT-23 (DYB)

The TPS7B4255-Q1 is a low-dropout (LDO) voltage-tracking regulator, with high tracking accuracy and excellent load and line transient response. The device is available in two 5-pin, SOT-23 packages (DBV and DYB). The TPS7B4255-Q1 is designed to supply off-board sensors in automotive applications such as powertrain systems. Because the risk of failure in cables that deliver off-board power is high, the device comes with integrated protection features against fault conditions such as reverse current (short to battery), reverse polarity, output short to ground (current limit), and overtemperature (thermal shutdown). The device is designed to handle a 45-V (absolute maximum) input voltage and survive the automotive load dump transient conditions.

A reference voltage applied at the ADJ/EN pin is effectively tracked at the OUT pin with very tight tolerance for loads up to 70 mA. The TPS7B4255-Q1 can therefore deliver the power-supply voltage to the off-board sensors with high precision, which can help improve the reliability and accuracy of measurements made using ratiometric sensors.

By setting the ADJ/EN input pin low, the TPS7B4255-Q1 switches to standby mode and reduces the quiescent current of the LDO to less than 3.25 µA.

The TPS7B4255-Q1 is a low-dropout (LDO) voltage-tracking regulator, with high tracking accuracy and excellent load and line transient response. The device is available in two 5-pin, SOT-23 packages (DBV and DYB). The TPS7B4255-Q1 is designed to supply off-board sensors in automotive applications such as powertrain systems. Because the risk of failure in cables that deliver off-board power is high, the device comes with integrated protection features against fault conditions such as reverse current (short to battery), reverse polarity, output short to ground (current limit), and overtemperature (thermal shutdown). The device is designed to handle a 45-V (absolute maximum) input voltage and survive the automotive load dump transient conditions.

A reference voltage applied at the ADJ/EN pin is effectively tracked at the OUT pin with very tight tolerance for loads up to 70 mA. The TPS7B4255-Q1 can therefore deliver the power-supply voltage to the off-board sensors with high precision, which can help improve the reliability and accuracy of measurements made using ratiometric sensors.

By setting the ADJ/EN input pin low, the TPS7B4255-Q1 switches to standby mode and reduces the quiescent current of the LDO to less than 3.25 µA.

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기술 문서

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모두 보기2
유형 직함 날짜
* Data sheet TPS7B4255-Q1 Automotive, 70-mA, 40-V, Voltage-Tracking LDO With 5-mV Tracking Tolerance datasheet (Rev. A) PDF | HTML 2023/08/23
Functional safety information TPS7B4255-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2023/02/13

설계 및 개발

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평가 보드

TPS7B4255EVM-062 — 70mA 40V 전압 추적 LDO(낮은 드롭아웃) 레귤레이터용 TPS7B4255 평가 모듈

TPS7B4255EVM-062 평가 모듈(EVM)은 회로 애플리케이션에서 TPS7B4255-Q1 선형 레귤레이터의 작동 및 성능 평가에 사용됩니다.

이 EVM 구성에는 오토모티브 애플리케이션을 위한 70mA, 고전압, 전압 추적, LDO(낮은 드롭아웃) 레귤레이터와 초저 기생적 측정에 최적화되어 있는 온보드 부하 과도 회로가 포함되어 있습니다. 레귤레이터는 허용 오차 3mV로 최대 70mA까지 공급할 수 있으며, 최대 40V, 최대 과도 45V의 폭넓은 입력 전압(VIN) 범위를 제공합니다. TPS7B4255-Q1 안정성을 위해 (...)

사용 설명서: PDF | HTML
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시뮬레이션 모델

TPS7B4255-Q1 PSpice Transient Model (Rev. A)

SBVM991A.ZIP (18 KB) - PSpice Model
패키지 다운로드
SOT-23 (DBV) 5 옵션 보기
SOT-23 (DYB) 5 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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