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TLV75733PDBVR – 3.3V 1A Low-Dropout (LDO) Voltage Regulator – Texas Instruments

Ensure stable power delivery in space-constrained designs with the TLV75733PDBVR LDO regulator from Texas Instruments. This high-performance IC provides a fixed 3.3V output at up to 1A current, featuring ultra-low dropout voltage and exceptional power supply rejection for noise-sensitive applications. PCX supplies this active-component solution directly from stock, guaranteeing genuine Texas Instruments quality with rapid shipping and dedicated technical support.

Key Features

• Fixed 3.3V Output with ±1.5% Accuracy
• High Current Capacity: 1A Continuous Output
• Ultra-Low Dropout: 475mV (Max) at 1A Load
• Wide Input Range: Up to 5.5V
• Enable Pin Control for Power Management
• Robust Protections: Thermal Shutdown, Current Limit & UVLO
• Low Quiescent Current: 40µA (Typ)
• High PSRR: 52dB (1kHz to 1MHz)

Technical Specifications

• Organization: Single Positive Fixed Regulator
• Interface: Enable (Active High) Control Pin
• Package: SOT-23-5 (SC-74A)
• Mounting: Surface Mount (SMT)
• Operating Temperature: -40°C to +125°C (Junction)
• Compliance: RoHS, Pb-Free

Typical Applications

• Portable & Battery-Powered IoT Devices
• Noise-Sensitive ADC/DAC Power Rails
• Post-Regulation for Switching Supplies
• Microcontroller & FPGA Point-of-Load (PoL) Regulation
• Industrial Sensors and Control Systems

About Texas Instruments

Texas Instruments (TI) is a global semiconductor leader with over 90 years of innovation in analog and embedded processing technologies. Renowned for rigorous quality standards and cutting-edge R&D, TI’s power management ICs set industry benchmarks for efficiency, reliability, and thermal performance.

TI maintains stringent manufacturing controls and extended product lifecycles, making their components ideal for mission-critical designs. Engineers worldwide trust TI solutions for consistent operation in automotive, industrial, and consumer applications—ensuring long-term design stability and supply chain security.

About LDO Voltage Regulators

Low-Dropout (LDO) regulators provide clean, stable DC voltage with minimal input-to-output differential requirements—critical for battery-operated systems where maximizing runtime is essential. Unlike switching regulators, LDOs operate without inductors, offering ripple-free output and simplified PCB layouts.

Modern LDOs like the TLV75733 series integrate advanced features such as enable controls, power-good signals, and multi-level protections. They serve as indispensable “last-mile” power conditioners in mixed-signal circuits, RF modules, and high-speed processors, suppressing noise that could compromise signal integrity or data accuracy.

Packaging Options

Available in industry-standard formats: Tape & Reel (TR), Cut Tape (CT), and Digi-Reel®. Specify preferred packaging at checkout. Note: Product images are representational; refer to datasheet for exact dimensions.

Frequently Asked Questions

Q: What is the dropout voltage at 500mA load?
A: Dropout is typically 250mV at 500mA, significantly extending battery life in 3.7V Li-ion applications.

Q: Does this LDO require external capacitors?
A: Yes, stable operation requires a 1µF (min) ceramic output capacitor. See datasheet for layout guidelines.

Q: Can I parallel multiple TLV75733PDBVR for higher current?
A: Not recommended due to minor output voltage variations between units. Use a higher-current regulator instead.

Q: Is the enable pin TTL/CMOS compatible?
A: Yes, the enable pin (active high) operates with standard 1.8V/3.3V/5V logic signals.

Q: How does PSRR impact my design?
A: The 52dB PSRR attenuates input ripple by ~400x, preventing noise coupling in sensitive RF/analog circuits.

Q: What PCB precautions ensure thermal stability?
A: Use thermal vias under the SOT-23-5 pad and connect to a copper pour. Monitor junction temperature in high-ambient environments.

Download Full Datasheet: PCXCo.com/datasheets/TLV75733PDBVR_TI.pdf

🚚 Order from PCX Today! Benefit from same-day shipping on in-stock TLV75733PDBVR units—get genuine Texas Instruments components with full traceability and technical support. Secure your supply for critical projects now!