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Linear- und Low-Dropout-Regler (LDO)

TPS7B63-Q1

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Low-Drop-Out-Spannungsregler für die Automobilindustrie, 300 mA, batteriebetrieben (40 V), hoher PSR

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TPS7B63-Q1

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Produktdetails

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.3 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 PSRR at 100 KHz (dB) 55 Iq (typ) (mA) 0.019 Features Enable, Power good, Watchdog timer Thermal resistance θJA (°C/W) 40 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 300 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.3 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 PSRR at 100 KHz (dB) 55 Iq (typ) (mA) 0.019 Features Enable, Power good, Watchdog timer Thermal resistance θJA (°C/W) 40 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 300 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 16 32 mm² (5 mm × 6.4 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • Maximum output current: 300mA
  • 4V to 40V wide VIN input-voltage range with up to 45V transients
  • Fixed 3.3V and 5V outputs
  • Maximum dropout voltage: 400mV at 300mA
  • Stable with output capacitor in wide range of capacitance (4.7µF to 500µF) and ESR (0.001Ω to 20Ω)
  • Low quiescent current (I(Q)):
    • < 4µA when EN is low (shutdown mode)
    • 19µA 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 10ms to 500ms)
  • 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
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • 16-pin HTSSOP package
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • Maximum output current: 300mA
  • 4V to 40V wide VIN input-voltage range with up to 45V transients
  • Fixed 3.3V and 5V outputs
  • Maximum dropout voltage: 400mV at 300mA
  • Stable with output capacitor in wide range of capacitance (4.7µF to 500µF) and ESR (0.001Ω to 20Ω)
  • Low quiescent current (I(Q)):
    • < 4µA when EN is low (shutdown mode)
    • 19µA 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 10ms to 500ms)
  • 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
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • 16-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 TPS7B63-Q1 is a 300mA watchdog low-dropout regulator (LDO) designed for an operating voltage up to 40V, with typical quiescent current of only 19µA at light load. The device integrates a programmable function for selecting a window watchdog or standard watchdog, with an external resistor to set the watchdog time within 10% accuracy.

The PG pin on the TPS7B63-Q1 indicates when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by selecting external components. The device also features integrated short-circuit and overcurrent protection. The combination of such features makes this device particularly flexible and designed to supply a microcontroller 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 TPS7B63-Q1 is a 300mA watchdog low-dropout regulator (LDO) designed for an operating voltage up to 40V, with typical quiescent current of only 19µA at light load. The device integrates a programmable function for selecting a window watchdog or standard watchdog, with an external resistor to set the watchdog time within 10% accuracy.

The PG pin on the TPS7B63-Q1 indicates when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by selecting external components. The device also features integrated short-circuit and overcurrent protection. The combination of such features makes this device particularly flexible and designed to supply a microcontroller in automotive applications.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TPS7B63-Q1 Automotive, 300mA, 40V High-Voltage, Ultra-Low-Quiescent-Current Watchdog LDO datasheet (Rev. D) PDF | HTML 06.06.2025
Anwendungshinweis An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) PDF | HTML 23.09.2025
Informationen zur funktionalen Sicherheit TPS7B63-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) 10.06.2020
Anwendungshinweis A Topical Index of TI LDO Application Notes (Rev. F) 27.06.2019
E-book LDO Basics (Rev. A) 08.04.2019
Technischer Artikel Discrete SBCs: versatile and scalable solutions for any application PDF | HTML 27.07.2017
Technischer Artikel LDO basics: dropout PDF | HTML 16.03.2017

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Evaluierungsplatine

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