TPS76350DBVT: High-Performance 5V 150mA Linear Voltage Regulator by Texas Instruments

The TPS76350DBVT from Texas Instruments is an advanced linear voltage regulator delivering exceptional power management performance in compact designs. As part of TI's renowned power management IC portfolio, this regulator combines efficiency, reliability, and space-saving packaging - making it perfect for modern electronic applications.

Comprehensive Product Overview

This fixed 5V output regulator provides up to 150mA of continuous current with outstanding line and load regulation. The device features an ultra-low 0.3V dropout voltage at full load, enabling operation even with input voltages as low as 5.3V. Its SOT-23-5 package (just 2.9mm 1.6mm) makes it ideal for space-constrained PCB designs.

Detailed Technical Specifications

Electrical Characteristics

• Input Voltage Range: 5.3V to 10V
• Output Voltage Accuracy: 2% (typical)
• Dropout Voltage: 0.3V (max) at 150mA load
• Quiescent Current: 100 A (typical)
• PSRR: 60dB at 1kHz
• Operating Temperature: -40 C to +125 C

Advanced Protection Features

The TPS76350DBVT incorporates multiple protection mechanisms:

• Overcurrent protection (OCP) with foldback
• Thermal shutdown
• Reverse polarity protection
• Short-circuit protection

These features ensure reliable operation in demanding environments.

Performance Advantages

Superior Power Efficiency

The low dropout voltage minimizes power dissipation, achieving up to 94% efficiency when converting from 5.5V input to 5V output. This makes it exceptionally suitable for battery-powered applications.

Excellent Noise Rejection

With 60dB PSRR at 1kHz, the regulator effectively filters input noise, providing clean power to sensitive analog circuits and digital processors.

Robust Thermal Performance

The device's thermal design allows operation across the full industrial temperature range without derating, supporting applications in harsh environments.

Application Scenarios

The TPS76350DBVT is versatile enough for numerous applications:

• Portable Electronics: Smartphones, tablets, wearables
• IoT Devices: Sensors, wireless modules
• Industrial Systems: PLCs, control modules
• Automotive Electronics: Infotainment, telematics
• Medical Devices: Portable monitoring equipment

Design Considerations

PCB Layout Guidelines

For optimal performance:

• Place input capacitor (1 F) within 5mm of the input pin
• Use low-ESR output capacitor (1 F)
• Minimize trace lengths to reduce impedance
• Provide adequate thermal vias for heat dissipation

Enable Pin Functionality

The active-high enable pin allows for power sequencing and low-power modes, reducing standby current to just 1 A when disabled.

Comparison with Competing Devices

The TPS76350DBVT outperforms similar regulators in several aspects:

Parameter	TPS76350DBVT	Competitor A	Competitor B
Dropout Voltage	0.3V	0.5V	0.4V
Quiescent Current	100 A	150 A	120 A
Package Size	SOT-23-5	SOT-89	SOT-23-5
PSRR	60dB	50dB	55dB

Purchasing Information

The TPS76350DBVT is available through authorized Texas Instruments distributors. Typical lead times are 6-8 weeks for production quantities. Evaluation boards (TPS76350EVM-001) are available for design verification.

Conclusion

The TPS76350DBVT represents an optimal solution for designers needing a compact, efficient 5V regulator with robust protection features. Its combination of low dropout, excellent noise rejection, and industrial-grade reliability makes it superior to competing solutions in its class. Whether for consumer electronics or industrial systems, this regulator delivers uncompromising performance in minimal board space.

For technical support or design assistance with the TPS76350DBVT, contact Texas Instruments' technical support team or visit their official website for detailed application notes and design resources.