LD1117DT12TR Linear Voltage Regulator by STMicroelectronics
- Brand: STMicroelectronics
- Product Code: LD1117DT12TR
- Availability: In Stock
$0.12
- Ex Tax: $0.12
Introduction to the LD1117DT12TR Linear Voltage Regulator
The LD1117DT12TR from STMicroelectronics represents a pinnacle in precision power management solutions, offering engineers a reliable and efficient means of voltage regulation in modern electronic systems. This monolithic linear regulator, housed in a robust DPAK package, delivers a fixed 1.2V output with exceptional stability and performance across diverse operating conditions. As part of STMicroelectronics' extensive portfolio of power management ICs, this device exemplifies the company's commitment to innovation in semiconductor technology.
Technical Excellence in Voltage Regulation
At its core, the LD1117DT12TR employs advanced CMOS technology to achieve remarkable regulation accuracy while maintaining minimal dropout voltage characteristics. The device's 1.2V fixed output voltage remains stable under varying load conditions, with a maximum dropout voltage of just 1.2V at 800mA output current. This low dropout performance enables efficient operation even in systems with limited headroom between input and output voltages.
| Parameter | Specification |
|---|---|
| Max Input Voltage | 15V |
| Output Current | 800mA |
| Quiescent Current | 5mA |
| Operating Temperature | 0°C to 125°C |
| PSRR | 75dB @ 120Hz |
Engineered for demanding applications, this linear regulator incorporates comprehensive protection mechanisms including thermal shutdown and overcurrent limiting. These features ensure reliable operation in environments where thermal management and electrical stress are critical considerations. The device's surface-mount TO-252-3 package facilitates efficient heat dissipation while maintaining compatibility with standard PCB assembly processes.
Advanced Performance Characteristics
The LD1117DT12TR's 75dB power supply rejection ratio (PSRR) at 120Hz makes it particularly effective in filtering out ripple and noise from upstream power sources. This exceptional noise suppression capability is crucial in sensitive analog circuits, precision measurement systems, and low-noise amplifier applications where signal integrity must be maintained.
With its wide operating temperature range (-40°C to +125°C), the regulator demonstrates exceptional thermal stability in both industrial and automotive environments. The device's quiescent current remains exceptionally low at 5mA, contributing to overall system efficiency while minimizing standby power consumption.
Design Flexibility and Application Versatility
While optimized for fixed 1.2V regulation, the LD1117DT12TR's design philosophy emphasizes adaptability across multiple domains. Its robust feature set makes it suitable for:
- Digital set-top boxes and consumer electronics
- Industrial control systems
- Telecom infrastructure equipment
- Automotive infotainment systems
- Portable measurement instruments
The regulator's compatibility with standard ceramic output capacitors simplifies design implementation while reducing overall BOM costs. Designers can leverage its predictable performance characteristics to develop compact power solutions without compromising reliability or thermal management.
Tags: linear regulator, voltage regulation, STM microelectronics, power management, electronic components