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

TPS7B68-Q1

활성

WD를 지원하는 오토모티브 500mA, 오프 배터리(40V), 높은 PSRR, 저 IQ, 저손실 전압 레귤레이터

지금 주문
데이터시트

TPS7B68-Q1

활성
데이터시트 지금 주문

제품 상세 정보

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Iq (typ) (mA) 0.019 Thermal resistance θJA (°C/W) 38 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good, Watchdog timer Accuracy (%) 2 PSRR at 100 KHz (dB) 55 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Iq (typ) (mA) 0.019 Thermal resistance θJA (°C/W) 38 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good, Watchdog timer Accuracy (%) 2 PSRR at 100 KHz (dB) 55 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Maximum output current: 500 mA
  • 4-V to 40-V wide VIN input-voltage range with up to 45-V transients
  • Fixed 3.3-V and 5-V outputs
  • Maximum dropout voltage: 600 mV at 500 mA
  • Stable with output capacitor in wide-range of capacitance (4.7 µF to 500 µF) and ESR (0.001 Ω to 20 Ω)
  • Low quiescent current (I(Q)):
    • < 4 µA when EN is low (shutdown mode)
    • 19 µA typical at light loads with WD_EN high (watchdog disabled)
  • Configurable for window watchdog or standard watchdog
  • Open-to-closed window ratio configurable as 1:1 or 8:1
  • Fully adjustable watchdog period (from 10 ms to 500 ms)
  • 10% accurate watchdog period
  • Dedicated WD_EN pin to control watchdog ON-OFF
  • Fully adjustable power-good threshold and power-good delay period
  • Low Input-voltage tracking to UVLO
  • Integrated fault protection:
    • Overload current-limit protection
    • Thermal shutdown
  • 28-Pin HTSSOP package
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Maximum output current: 500 mA
  • 4-V to 40-V wide VIN input-voltage range with up to 45-V transients
  • Fixed 3.3-V and 5-V outputs
  • Maximum dropout voltage: 600 mV at 500 mA
  • Stable with output capacitor in wide-range of capacitance (4.7 µF to 500 µF) and ESR (0.001 Ω to 20 Ω)
  • Low quiescent current (I(Q)):
    • < 4 µA when EN is low (shutdown mode)
    • 19 µA typical at light loads with WD_EN high (watchdog disabled)
  • Configurable for window watchdog or standard watchdog
  • Open-to-closed window ratio configurable as 1:1 or 8:1
  • Fully adjustable watchdog period (from 10 ms to 500 ms)
  • 10% accurate watchdog period
  • Dedicated WD_EN pin to control watchdog ON-OFF
  • Fully adjustable power-good threshold and power-good delay period
  • Low Input-voltage tracking to UVLO
  • Integrated fault protection:
    • Overload current-limit protection
    • Thermal shutdown
  • 28-Pin HTSSOP package

In automotive microcontroller or microprocessor power-supply applications, the watchdog is used to monitor the microcontroller working status to prevent software runaway. The watchdog must be independent of the microcontroller in a reliable system.

The TPS7B68-Q1 is a 500-mA watchdog LDO designed for an operating voltage up to 40 V, with typical quiescent current of only 19 µA at light load. The device integrates a programmable function for selecting a window or standard watchdog, with an external resistor to set the watchdog time within 10% accuracy.

The PG pin on the TPS7B68-Q1 indicates when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by external components. The device also features an integrated short-circuit and overcurrent protection. The combination of such features makes this device particularly flexible and suitable to supply microcontroller systems in automotive applications.

In automotive microcontroller or microprocessor power-supply applications, the watchdog is used to monitor the microcontroller working status to prevent software runaway. The watchdog must be independent of the microcontroller in a reliable system.

The TPS7B68-Q1 is a 500-mA watchdog LDO designed for an operating voltage up to 40 V, with typical quiescent current of only 19 µA at light load. The device integrates a programmable function for selecting a window or standard watchdog, with an external resistor to set the watchdog time within 10% accuracy.

The PG pin on the TPS7B68-Q1 indicates when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by external components. The device also features an integrated short-circuit and overcurrent protection. The combination of such features makes this device particularly flexible and suitable to supply microcontroller systems in automotive applications.
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기술 문서

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모두 보기3
유형 직함 날짜
* Data sheet TPS7B68-Q1 500-mA 40-V high-voltage ultralow quiescent-current watchdog LDO datasheet (Rev. C) PDF | HTML 2019/02/14
Functional safety information TPS7B68-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2022/10/24
Technical article Discrete SBCs: versatile and scalable solutions for any application PDF | HTML 2017/07/27

설계 및 개발

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

평가 보드

TPS7B6850EVM — TPS7B6850-Q1 500mA 워치독 LDO 레귤레이터 평가 모듈

The TPS7B6850EVM evaluation module (EVM) helps you evaluate the operation and performance of the TPS7B6850-Q1 watchdog low-dropout (LDO) regulator. The TPS7B6850-Q1 device is a monolithic integrated 40-V 500-mA watchdog LDO regulator in a 28-pin HTSSOP (...)
사용 설명서: PDF
TI.com에서 구매할 수 없습니다
시뮬레이션 모델

TPS7B6833-Q1 PSpice Transient Model

SLVMBW4.ZIP (139 KB) - PSpice Model
다운로드
시뮬레이션 모델

TPS7B6850-Q1 PSpice Transient Model

SLVMBW5.ZIP (143 KB) - PSpice Model
다운로드
패키지 핀 다운로드
HTSSOP (PWP) 28 옵션 보기
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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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