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Automotive 500-mA 40-V ultra-low-IQ low-dropout (LDO) linear regulator with power good

Inventory: 5

Quality information

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Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
HSOIC (DDA) | 8 2,500 | LARGE T&R
-40 to 150
Package | Pins HSOIC (DDA) | 8
Package qty | Carrier 2,500 | LARGE T&R
Operating temperature range (°C) -40 to 150
View TI packaging information

Features for the TPS7B86-Q1

  • 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: 3 V to 40 V (42 V max)
  • Output voltage range:
    • Adjustable output: 1.2 V to 18 V
    • Fixed output: 3.3 V and 5V
  • Maximum output current: 500 mA
  • Output voltage accuracy: ±1% (max)
  • Low dropout voltage:
    • 500 mV (max) at 450 mA (VOUT ≥ 3.3V)
  • Low quiescent current:
    • 20 µA (typ) at light loads
    • 5 µA (max) whendisabled
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1-V/µsVIN slew rate)
  • Dropout voltage: 555 mV (max) at VOUT ≥ 3.3 V
  • Power-good with programmable delay period
  • Stable with a 2.2-µF or larger capacitor
  • Package options:
    • 3-pin TO-252 package: (RθJA):29.7°C/W
    • 8-pin SO-8 package: (RθJA):41.8°C/W

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Description for the TPS7B86-Q1

The TPS7B86-Q1 is a low-dropout linear regulator designed to connect to thebattery in automotive applications. The device has an input voltage range extending to 40 V, whichallows the device to withstand transients (such as load dumps) that are anticipated in automotivesystems. With only a 20-µA quiescent current at light loads, the device is an optimal solution forpowering always-on components such as microcontrollers (MCUs) and controller area network (CAN)transceivers in standby systems.

The device has a state-of-the-art transient response that allows the output to quicklyreact to changes in load or line (for example, during cold-crank conditions). Additionally, thedevice has a novel architecture that minimizes output overshoot when recovering from dropout.During normal operation, the device has a tight DC accuracy of ±1% over line, load, andtemperature.

The device is equipped with a power-good output to indicatewhen the output voltage is close to its final value. The power-good delay can be adjusted byexternal components, thus allowing the delay time to be configured for a specific system.

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


Qty Price (USD)
1-99 1.559
100-249 1.288
250-999 0.925
1,000+ 0.696