The LT1761ES5-2.5#TR is a specialized integrated circuit manufactured by Linear Technology (now part of Analog Devices) that functions as a low-dropout (LDO) linear voltage regulator designed to provide a stable 2.5V output voltage. This IC belongs to the specialized integrated circuits category within the broader family of voltage regulation components, specifically engineered to address critical design challenges in power management applications where space constraints, low noise requirements, and efficient voltage regulation are paramount.
The device operates as a precision voltage regulator capable of maintaining tight output voltage regulation even when the input voltage is only slightly higher than the desired output, making it ideal for battery-powered applications and systems with limited headroom. The LDO topology addresses the fundamental challenge of providing clean, stable power in compact electronic designs while minimizing power dissipation and heat generation. The 2.5V output specification makes it particularly suitable for powering digital logic circuits, microcontrollers, and analog front-end circuits that require this specific voltage level.
Key specifications include the 2.5V fixed output voltage with typical accuracy within ±2% over temperature and load variations, low dropout voltage typically around 300mV at full load, and excellent line and load regulation characteristics. The device features low quiescent current consumption, typically in the microampere range, which is crucial for battery life extension in portable applications. The regulator incorporates thermal shutdown protection, current limiting, and reverse battery protection to ensure robust operation under various operating conditions.
The primary advantages of this LDO regulator include its exceptional stability and low output noise, making it suitable for powering sensitive analog circuits and precision measurement systems. The device offers fast transient response to load changes, excellent ripple rejection to filter out input voltage variations, and maintains regulation across a wide temperature range. The low dropout characteristic allows efficient operation even when input and output voltages are closely matched, maximizing battery utilization in portable devices.
The SOT23-5 package format provides excellent compatibility with modern surface-mount manufacturing processes and enables high-density PCB layouts. This five-pin configuration typically includes input voltage, ground, output voltage, enable/shutdown control, and bypass pins, offering designers flexibility in implementation. The small footprint and low profile make it compatible with space-constrained applications including smartphones, tablets, wearable devices, and IoT sensors.
Primary application areas encompass portable electronics where the 2.5V rail is needed for powering microprocessors, DSPs, FPGAs, and mixed-signal ICs. The regulator finds extensive use in battery-powered instrumentation, medical devices, automotive electronics, telecommunications equipment, and industrial control systems. It serves as an ideal solution for post-regulation in switching power supply designs, providing clean power for noise-sensitive circuits downstream of switching regulators.
Equivalent and alternative models include the Texas Instruments TPS76925, which offers similar 2.5V output and SOT23-5 packaging with comparable electrical characteristics. The Maxim MAX8887EZK25 provides equivalent functionality with similar dropout voltage and current capability specifications. STMicroelectronics offers the LD2985BM25R as a direct alternative with matching output voltage and package format. The Microchip MCP1825S-2502E/DB represents another viable substitute with similar performance parameters and thermal characteristics. National Semiconductor's LP2985IM5-2.5 (now part of Texas Instruments) serves as an additional equivalent option with comparable specifications and pin compatibility. The ON Semiconductor NCP1117ST25T3G provides similar functionality though in a slightly different package variant, while the Richtek RT9013-25GB offers equivalent performance characteristics with similar electrical specifications and thermal performance, ensuring designers have multiple sourcing options while maintaining design compatibility and performance requirements.
LT1761ES5-2.5#TR Key Technical Attributes
Manufacturer: Linear Technology / Analog Devices
Part Number: LT1761ES5-2.5#TR
Package: SOT23-5
LT1761ES5-2.5#TR Packing Size
The LT1761ES5-2.5#TR is packaged in the compact SOT23-5 form factor, manufactured from industry-standard materials ensuring reliability and durability. The 604 package case offers excellent board-mounting versatility and space-saving benefits, making it suitable for high-density circuit layouts. The SOT23-5 pin configuration comprises five leads, designed for efficient electrical contact and easy automated assembly. Thermal dissipation properties are optimized for low drop-out conditions, supporting stable operation within manufacturer-specified temperature ranges. Electrical rating parameters adhere strictly to industry standards, ensuring safe incorporation into various electronic designs.
LT1761ES5-2.5#TR Application
This device finds extensive application in sensitive power management circuits, portable electronic devices, battery-powered systems, instrumentation, and noise-sensitive analog circuitry. It is particularly suited for scenarios demanding stable, low-noise, and precise voltage regulation in compact spaces.
LT1761ES5-2.5#TR Features
The LT1761ES5-2.5#TR integrated circuit is distinguished by its low dropout voltage, typically only a few hundred millivolts, and quiescent current lower than conventional regulators, leading to enhanced energy efficiency and longer battery life in portable applications. It delivers a fixed 2.5V output voltage with high accuracy and fast line and load transient response, minimizing error potential in dynamic environments. Superior line and load regulation performance ensures that output voltage remains stable even with input or load variations. Protection features include current limiting, thermal shutdown, and reverse battery protection, safeguarding both the device and the application circuit. The SOT23-5 package’s compact footprint contributes to system miniaturization. Additionally, the device’s low output noise and fast transient response make it ideal for precision analog and high-performance audio systems.
LT1761ES5-2.5#TR Quality and Safety Features
Each LT1761ES5-2.5#TR regulator undergoes rigorous quality testing and is compliant with industry safety guidelines. Integrated protection circuitry such as short-circuit protection, thermal overload safeguards, and robust electrostatic discharge (ESD) resilience ensures reliable and consistent performance even in challenging conditions. RoHS compliance underscores its environmentally friendly credentials and suitability for global manufacturing environments.
LT1761ES5-2.5#TR Compatibility
As a specialized low-dropout linear regulator, this component is compatible with a wide range of microcontrollers, analog circuitry, and other sensitive ICs requiring a regulated 2.5V supply. Its SOT23-5 footprint aligns with standard PCB footprints, facilitating straightforward integration and replacement across diverse design architectures.
LT1761ES5-2.5#TR Datasheet PDF
The most trusted, up-to-date datasheet for the LT1761ES5-2.5#TR is available exclusively on our website. For critical design work and in-depth technical evaluation, we strongly recommend customers download the datasheet directly from this page to access authoritative technical specifications and application guidelines.
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