LD1117DT33CTR 3.3V Linear Voltage Regulator IC - 800mA Output, DPAK Package
- Brand: STMicroelectronics
- Product Code: LD1117DT33CTR
- Availability: In Stock
$0.07
- Ex Tax: $0.07
Reliable Voltage Regulation for Modern Electronics
As electronic systems continue to demand higher performance and efficiency, the LD1117DT33CTR linear voltage regulator emerges as a critical component for maintaining stable power delivery. This STMicroelectronics IC delivers precision-engineered voltage regulation with a fixed 3.3V output, designed specifically for applications requiring consistent power management in compact packages. With its robust thermal protection and low dropout characteristics, this device represents the perfect balance between performance and reliability for engineers developing next-generation electronics.
Key Features
The LD1117DT33CTR stands out in STMicroelectronics' extensive portfolio of power management solutions. Its surface-mount DPAK package combines space-saving design with excellent thermal dissipation capabilities, making it ideal for modern PCB layouts where both performance and footprint matter. The regulator's 800mA output current capacity ensures compatibility with a wide range of digital circuits, sensor interfaces, and embedded systems requiring stable 3.3V power rails.
| Parameter | Value |
| Input Voltage | Up to 15V |
| Output Voltage | 3.3V Fixed |
| Dropout Voltage | 1.3V @ 800mA |
| Operating Temperature | -40°C to 125°C |
| Package Type | TO-252-3 (DPAK) |
Performance Characteristics
Engineered for demanding applications, this linear regulator demonstrates exceptional performance metrics. Its 75dB PSRR (Power Supply Rejection Ratio) at 120Hz ensures minimal noise interference, while the integrated over-temperature and over-current protection mechanisms provide built-in safety for both the regulator and connected components. The device's quiescent current remains exceptionally low at 10mA, contributing to overall system efficiency without compromising performance.
Designed for industrial-grade reliability, the LD1117DT33CTR operates seamlessly across extreme temperature ranges (-40°C to 125°C), making it suitable for automotive electronics, industrial control systems, and consumer devices exposed to varying environmental conditions. The TO-252-3 package format offers excellent thermal management through its tab-connected lead configuration, allowing for efficient heat dissipation without requiring additional cooling components.
Application Versatility
This versatile voltage regulator finds application across multiple domains in modern electronics. From powering microcontroller units (MCUs) in IoT devices to providing stable reference voltages for precision analog circuits, its 3.3V fixed output meets the requirements of today's digital systems. The component's compatibility with standard surface-mount assembly processes makes it particularly attractive for high-volume manufacturing environments where reliability and production efficiency are paramount.
When compared to switching regulators in similar applications, the LD1117DT33CTR offers distinct advantages in noise-sensitive environments. Its inherent simplicity and minimal external component requirements reduce design complexity while maintaining exceptional voltage regulation characteristics. This makes it particularly valuable in applications like sensor interfaces, RF modules, and portable electronics where clean power delivery directly impacts system performance.
Tags: Power Management ICs, Voltage Regulation Solutions, Industrial Electronics Components, Surface Mount Regulators, Thermal Protection Circuits