Texas Instruments

TPS73215DBVR

TPS73215DBVR Description

The TPS73215DBVR is a fixed-output, low-dropout (LDO) linear voltage regulator from Texas Instruments, designed to deliver a stable 1.5V output with a maximum current of 250mA. Operating within an input voltage range of up to 5.5V, this regulator features an ultra-low dropout voltage of 0.15V at 250mA, making it highly efficient for power-sensitive applications. Although marked as obsolete, it remains a reliable choice for legacy designs due to its robust performance and integration of advanced protection features. The device is housed in a compact SOT23-5 package, suitable for space-constrained PCB layouts, and complies with ROHS3 and REACH environmental standards.

TPS73215DBVR Features

• High PSRR (58dB @ 100Hz): Ensures excellent noise suppression, critical for analog and RF circuits.
• Low Quiescent Current (550 µA): Minimizes power loss in battery-operated devices.
• Integrated Protections: Includes over-current, over-temperature, short-circuit, and reverse-polarity safeguards for enhanced reliability.
• Enable Control Pin: Allows for power management via external logic, reducing standby power consumption.
• Stable with Ceramic Capacitors: Eliminates the need for bulky output capacitors, simplifying design.
• Wide Input Range (Up to 5.5V): Compatible with 3.3V and 5V rail systems.

TPS73215DBVR Applications

The TPS73215DBVR is ideal for precision voltage regulation in:

• Portable Electronics: Such as handheld medical devices, wearables, and IoT sensors, where low quiescent current and small footprint are critical.
• Industrial Control Systems: Where high PSRR ensures stable operation amid noisy power environments.
• Automotive Infotainment: For secondary voltage regulation in dashboards or telematics, leveraging its reverse-polarity protection.
• Embedded Systems: As a local regulator for microcontrollers, FPGAs, or memory modules requiring clean 1.5V rails.

Conclusion of TPS73215DBVR

While the TPS73215DBVR is now obsolete, its combination of low dropout, high PSRR, and robust protection makes it a historically significant solution for low-voltage regulation. Engineers maintaining legacy systems or seeking cost-effective alternatives for noise-sensitive, low-power applications may still find value in its design. For new projects, Texas Instruments' newer LDOs with improved efficiency and smaller packages are recommended.