About this part

TLV1117LV33DCYR – 3.3V 1A Low-Dropout (LDO) Voltage Regulator – Texas Instruments

Optimize power stability in space-constrained designs with the TLV1117LV33DCYR low-dropout voltage regulator from Texas Instruments. This high-performance IC delivers a fixed 3.3V output with ultra-low dropout voltage, making it ideal for noise-sensitive applications requiring reliable voltage conversion. Experience enhanced efficiency and thermal protection for robust system performance.

Key Features

• Fixed 3.3V Output with ±2% accuracy
• 1A Continuous Output Current for power-hungry loads
• Ultra-Low 1.3V Dropout @ 800mA (max) for efficient low-voltage operation
• 100µA Quiescent Current minimizes standby power consumption
• 75dB PSRR (120Hz) for superior noise rejection
• Wide Temperature Range: -40°C to +125°C
• Over-Current & Over-Temperature Protection

Technical Specifications

This surface-mount LDO regulator accepts input voltages up to 5.5V and provides a stable 3.3V output via a positive, fixed configuration. Housed in a compact SOT-223-4 package (TO-261-4/TO-261AA), it features a single regulator channel with industrial-grade temperature tolerance. The high PSRR ensures clean power delivery in noisy environments.

Typical Applications

• IoT devices and battery-powered systems
• Embedded computing & industrial controllers
• Post-regulation for switching power supplies
• Consumer electronics (set-top boxes, routers)
• Automotive infotainment subsystems

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, TI’s voltage regulation solutions set industry benchmarks for reliability and performance across automotive, industrial, and consumer markets.

TI’s commitment to engineering excellence ensures consistent product longevity and technical support. Their vertically integrated manufacturing process guarantees traceability and adherence to strict tolerance specifications, making TI components preferred for mission-critical designs worldwide.

About Low-Dropout (LDO) Regulators

LDO regulators provide critical voltage stabilization in electronic circuits by converting higher input voltages to precise, lower output levels with minimal power loss. Unlike switching regulators, LDOs deliver ripple-free output without inductors, making them essential for noise-sensitive analog components like sensors, RF modules, and ADCs.

Modern LDOs like the TLV1117 series excel in applications where input-output differentials are small, space is limited, and transient response is critical. Their simplicity, low EMI, and fast load response ensure stable power rails for microcontrollers, FPGAs, and communication interfaces.

Packaging Options

Available in Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® packaging for automated assembly compatibility. Specify your preference at checkout.

FAQs

Q: What is the dropout voltage at full 1A load?
A: Dropout is typically 1.1V at 1A, with a maximum of 1.3V at 800mA as per datasheet.

Q: Is this regulator suitable for 5V to 3.3V conversion?
A: Yes, its 5.5V max input and 1.3V dropout make it ideal for 5V→3.3V conversion.

Q: Does it require external capacitors?
A: A 10µF ceramic output capacitor is recommended for stability. Refer to the datasheet for details.

Q: Can it operate in automotive environments?
A: The -40°C to +125°C range supports industrial and automotive applications, though AEC-Q100 certification should be verified for safety-critical uses.

Q: How does PSRR improve system performance?
A: 75dB PSRR suppresses input ripple, preventing noise from affecting sensitive components like oscillators or ADCs.

Q: Is this pin-compatible with other TLV1117 variants?
A: Yes, it shares the SOT-223-4 footprint with the entire TLV1117 family for design flexibility.

Note: Product images are representational. Refer to datasheets for exact dimensions and schematics.

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