TPS7B8150QDGNRQ1

1 Features

· AEC-Q100 qualified for automotive applications:

  -Temperature grade 1:-40℃ to 125℃, TA

· Device junction temperature range:

  -40℃ to 150℃

· 3-V to 40-V wide Vw input voltage range with up to 45-V transient

· Maximum output current:150 mA

· Low quiescent current lo

  -300 nA typical when EN=low (shutdown mode)

  -2.7 uA typical at light loads

  -4.5μA maximum at light loads

· 1.5% output-voltage accuracy over line, load and temperature

· Maximum dropout voltage:540 mV at 150-mAload current for fixed 5-V output version

· Stable with low-ESR(0.001-2 to 5-Q) ceramicoutput-stability capacitor (1 uF to 200 uF)

· Fixed 5-V and 3.3-V output voltage

· Integrated fault protection:

  -Thermal shutdown

  -Short-circuit and overcurrent protection

· Packages:

  -DGN(8-pin HVSSOP),R2lA =63.9℃/W

  -DRV(6-pin WSON), RauA=72.8CW

  -KVU(5-pin TO-252), RoJA=38.8℃W (preview)

2 Applications

· Cluster power supply·Body control modules

· Always-on battery-connected applications:

  -Gateway applications

  -Remote keyless entry systems

· Powering MCUs and CAN/LIN transceivers

3 Description 

In automotive battery-connected applications, low quiescent current(lo) is important to conserve energy and to extend battery lifetime. Always-on systems must have ultralow lo over an extended temperature range to enable sustained operation when the vehicle ignition is off.

The TPS7B81-Q1 is a low-dropout(LDO) linear regulator designed for up to 40-V Vw applications. With only a 2.7-uA typical quiescent current at light load, the device is an optimal solution for powering microcontrollers and controller area network and local interconnect network (CAN/LIN) transceivers in standby systems.

The device features integrated short-circuit and overcurrent protection. This device operates in ambient temperatures from -40℃ to +125C and with junction temperatures from -40℃ to +150℃. Additionally, this device is available in several packages of varying size and thermal conductivity.

The small WSON package facilitates the most compact PCB design and the TO-252 package enables sustained operation despite significant dissipation across the device. These features make the device well suited as a power supply for various battery-connected automotive applications.

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