Texas Instruments TPS7B81/TPS7B81-Q1 LDO Linear Regulator
Texas Instruments TPS7B81/TPS7B81-Q1 Low-Dropout (LDO) Linear Regulator is designed for up to 40V VIN applications. With only a 2.7µA typical quiescent current at light load, the device is an optimal solution for powering microcontrollers. It can also power controller area network (CAN) and local interconnect network (LIN) transceivers in standby systems. The TPS7B81-Q1 features integrated short-circuit and overcurrent protection. The device operates in ambient temperatures from –40°C to +125°C and with junction temperatures from –40°C to +150°C. This regulator is available in several packages of varying sizes 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. The Texas Instruments TPS7B81-Q1 devices are AEC-Q100 qualified for automotive applications.Features
- Device junction temperature range: –40°C to 150°C
- 3V to 40V wide VIN input voltage range with up to 45V transient
- Maximum output current: 150mA
- Low quiescent current IQ
- 300nA typical when EN = low (shutdown mode)
- 2.7µA typical at light loads
- 4.5µA maximum at light loads
- 1.5% output-voltage accuracy over line, load, and temperature
- Maximum dropout voltage: 525mV at 150mA load current for fixed 5V output version
- Stable with low-ESR (0.001Ω to 5Ω) ceramic output-stability capacitor (1µF to 200µF)
- Fixed 5V and 3.3V output voltage
- Integrated fault protection
- Thermal shutdown
- Short-circuit and overcurrent protection
Applications
- Cluster power supply
- Body control modules
- Powering MCUs and CAN/LIN transceivers
- Always-on battery-connected applications
- Gateway applications
- Remote keyless entry systems
Datasheets
Functional Block Diagram
Publicado: 2019-07-12
| Actualizado: 2023-09-28
