Packaging information
| Package | Pins HVSSOP (DGN) | 8 |
| Operating temperature range (°C) -40 to 150 |
| Package qty | Carrier 2,500 | LARGE T&R |
Features for the TPS7B81-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to 125°C, TA
- Device junction temperature range: –40°C to 150°C
- 3-V to 40-V wide VIN input voltage range with up to 45-V transient
- Maximum output current: 150 mA
- Low quiescent current IQ:
- 300 nA typical when EN = low (shutdown mode)
- 2.7 µA typical at light loads
- 4.5 µA maximum at light loads
- 1.5% output-voltage accuracy over line, load and temperature
- Maximum dropout voltage: 540 mV at 150-mA load current for fixed 5-V output version
- Stable with low-ESR (0.001-Ω to 5-Ω) ceramic output-stability capacitor (1 µF to 200 µF)
- Fixed 5-V, 3.3-V and 2.5-V output voltage
- Integrated fault protection:
- Thermal shutdown
- Short-circuit and overcurrent protection
- Packages:
- DGN (8-pin HVSSOP), RθJA = 63.9°C/W
- DRV (6-pin WSON), RθJA = 72.8°C/W
- KVU (5-pin TO-252), RθJA = 38.8°C/W
Description for the TPS7B81-Q1
In automotive battery-connected applications, low quiescent current (IQ) is important to conserve energy and to extend battery lifetime. Always-on systems must have ultralow IQ 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 VIN applications. With only a 2.7-µA 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°C to +125°C and with junction temperatures from –40°C to +150°C. 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.