Inicio Administración de potencia Reguladores lineales y de baja salida (LDO)

TPS7B87-Q1

ACTIVO

Regulador de tensión de caída baja (LDO) de 500 mA y 40 V con buena potencia para automoción

Detalles del producto

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.5 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Noise (µVrms) 252 PSRR at 100 KHz (dB) 70 Iq (typ) (mA) 0.017 Features Power good Thermal resistance θJA (°C/W) 29.7 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 0.85 Dropout voltage (Vdo) (typ) (mV) 360 Operating temperature range (°C) -40 to 150
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.5 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Noise (µVrms) 252 PSRR at 100 KHz (dB) 70 Iq (typ) (mA) 0.017 Features Power good Thermal resistance θJA (°C/W) 29.7 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 0.85 Dropout voltage (Vdo) (typ) (mV) 360 Operating temperature range (°C) -40 to 150
TO-252 (KVU) 5 66.726 mm² (6.6 mm × 10.11 mm) 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
    • Junction temperature: –40°C to +150°C, TJ
  • Input voltage range: 3V to 40V (42V max)
  • Output voltage range: 3.3V and 5V (fixed)
  • Maximum output current: 500mA
  • Output voltage accuracy: ±0.85% (max)
  • Low dropout voltage:
    • 475mV (max) at 450mA
  • Low quiescent current:
    • 17µA (typ) at light loads
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1V/µs VIN slew rate)
  • Power-good with programmable delay period
  • Stable with a 2.2µF or larger capacitor
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Package options:
    • 5-pin TO-252 package: 29.7°C/W RθJA
    • 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Input voltage range: 3V to 40V (42V max)
  • Output voltage range: 3.3V and 5V (fixed)
  • Maximum output current: 500mA
  • Output voltage accuracy: ±0.85% (max)
  • Low dropout voltage:
    • 475mV (max) at 450mA
  • Low quiescent current:
    • 17µA (typ) at light loads
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1V/µs VIN slew rate)
  • Power-good with programmable delay period
  • Stable with a 2.2µF or larger capacitor
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Package options:
    • 5-pin TO-252 package: 29.7°C/W RθJA
    • 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA

The TPS7B87-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17µA quiescent current at light loads, the device is designed for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±0.85% over line, load, and temperature.

The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.

The device is available in thermally conductive packaging to allow the device to efficiently transfer heat to the circuit board.

The TPS7B87-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17µA quiescent current at light loads, the device is designed for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±0.85% over line, load, and temperature.

The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.

The device is available in thermally conductive packaging to allow the device to efficiently transfer heat to the circuit board.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS7B87-Q1 Automotive, 500mA, 40V, Low-Dropout Regulator With Power-Good datasheet (Rev. B) PDF | HTML 5/11/2025
Nota sobre la aplicación An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) PDF | HTML 23/09/2025
Información sobre seguridad funcional TPS7B87-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 1/07/2025
Nota sobre la aplicación A Topical Index of TI LDO Application Notes (Rev. F) 27/06/2019
Libro electrónico LDO Basics (Rev. A) 8/04/2019
Artículo técnico LDO basics: dropout PDF | HTML 16/03/2017

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

MLTLDO2EVM-037 — Módulo de evaluación del regulador de tensión lineal LDO universal para encapsulados DCY, DDA y KVU

El módulo de evaluación (EVM) del encapsulado múltiple de baja caída (LDO) MLTLDO2EVM-037 ayuda a los ingenieros de diseño a evaluar el funcionamiento y el rendimiento de muchos encapsulados comunes de reguladores lineales para su posible uso en aplicaciones de circuitos propias. Esta configuración (...)

Guía del usuario: PDF
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Modelo de simulación

TPS7B87-Q1 PSpice Transient Model (3.3-V Output)

SBVM971.ZIP (12 KB) - Modelo PSpice
Productos y hardware compatibles
Modelo de simulación

TPS7B87-Q1 PSpice Transient Model (5-V Output)

SBVM972.ZIP (12 KB) - Modelo PSpice
Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TO-252 (KVU) 5 Ultra Librarian
HSOIC (DDA) 8 Ultra Librarian

Pedidos y calidad

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