TEXAS INSTRUMENTS TPS76333DBVT SOT-23 LDO Voltage Regulator 3.3V 150mA

The TEXAS INSTRUMENTS TPS76333DBVT is a low-quiescent current, 150mA low-dropout (LDO) linear voltage regulator, designed to deliver stable 3.3V output from an input voltage up to 10V. It combines innovative circuit design with advanced process technology, replacing the traditional PNP pass transistor with a PMOS pass element. This results in exceptionally low dropout voltage—typically just 300mV at the full 150mA load—directly extending battery life in portable applications by maximising usable power.

A key advantage is its remarkably low quiescent current, which remains stable at a maximum of 140µA across the entire 0 to 150mA load range. This low-power operation is crucial for power-sensitive designs. The regulator also enters an ultra-low shutdown mode, drawing less than 2µA, for further power savings in standby states. Built-in protection features include thermal shutdown and over-current limitation, ensuring reliable operation under demanding conditions.

Primary Applications

Ideal for power management in battery-operated and portable electronic systems, this regulator is a perfect fit for extending operational life in devices such as laptops, cellular phones, handheld instruments, and other IoT or portable gadgets where efficiency is paramount.

Key Specifications

• Output Voltage: Fixed 3.3V
• Maximum Output Current: 150mA
• Input Voltage Range: 2.7V to 10V
• Typical Dropout Voltage: 300mV at 150mA load
• Quiescent Current (Operating): 140µA maximum
• Shutdown Current: < 2µA
• Package: SOT-23 (5-pin)
• Mounting: Surface Mount
• Operating Temperature Range: -40°C to +125°C
• Protection Features: Thermal shutdown, over-current limit
• Compliance: Green product (no antimony/bromine)

With its compact SOT-23 footprint, robust protection, and industry-leading efficiency, the