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Texas Instruments TPS7B87-Q1 40V Low-Dropout Regulators

Texas Instruments TPS7B87-Q1 40V Low-Dropout Regulators are designed to connect to the battery in automotive applications. The TPS7B87-Q1 has an input voltage range extending to 40V, allowing the device to withstand transients (such as load dumps) anticipated in automotive systems. The TPS7B87-Q1 is an optimal solution for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems, with only a 17µA quiescent current at light loads.

The TI TPS7B87-Q1 Low-Dropout Regulators have a state-of-the-art transient response that allows the output to react quickly to changes in load or line (for example, during cold-crank conditions). The device has a novel architecture that minimizes output overshoot when recovering from a dropout. During normal operation, the device has a tight DC accuracy of ±0.85% over line, load, and temperature.

The Low-Dropout Regulators are available in thermally conductive packaging, which allows the device to transfer heat to the circuit board efficiently.

Features

  • AEC-Q100 qualified for automotive applications
    • –40°C to +125°C, TA temperature grade 1
    • –40°C to +150°C, TJ junction temperature
  • 3V to 40V (42V max) input voltage range
  • 3.3V and 5V (fixed) output voltage range
  • 500mA maximum output current
  • ±0.85% (max) output voltage accuracy
  • 475mV (max) at 450mA low dropout voltage
  • 17µA (typ) at light loads low quiescent current
  • Excellent line transient response
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1V/µs VIN slew rate)
  • Power-Good with a programmable delay period
  • Stable with a 2.2µF or larger capacitor
  • Package options
    • 29.7°C/W RθJA 5-pin TO-252 package
    • 41.8°C/W RθJA 8-pin HSOIC-8 package with a thermal pad

Applications

  • Always-on battery-connected applications
    • Automotive gateways
    • Remote keyless entries (RKE)
  • Reconfigurable instrument clusters
    Body control modules (BCM)

Output Equal to Reference Voltage

Application Circuit Diagram - Texas Instruments TPS7B87-Q1 40V Low-Dropout Regulators

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Publicado: 2020-12-30 | Actualizado: 2025-03-10