STMicroelectronics LDL1117S33R Linear Voltage Regulator
- Brand: STMicroelectronics
- Product Code: LDL1117S33R
- Availability: In Stock
$0.08
- Ex Tax: $0.08
High-Performance Voltage Regulation with STMicroelectronics LDL1117S33R
In modern electronics design, reliable voltage regulation is critical for ensuring stable performance across diverse applications. The STMicroelectronics LDL1117S33R linear voltage regulator stands out as a robust solution for engineers seeking precision, efficiency, and durability. Designed with advanced features and housed in a compact SOT-223 package, this device delivers a fixed 3.3V output at up to 1.2A current, making it ideal for powering sensitive digital circuits, embedded systems, and industrial control modules.
Key Technical Specifications
Engineered for high reliability, the LDL1117S33R operates with a maximum input voltage of 18V, ensuring compatibility with a wide range of power sources. Its low dropout voltage of just 0.6V at 1.2A load current allows efficient operation even in low-voltage environments. The device integrates multiple protection mechanisms, including overcurrent, overtemperature, and under-voltage lockout (UVLO) safeguards, which prevent damage during abnormal operating conditions. With a quiescent current of only 500 µA, this regulator excels in energy-sensitive applications.
| Parameter | Specification |
|---|---|
| Output Voltage | 3.3V Fixed |
| Output Current | 1.2A |
| Input Voltage Range | Up to 18V |
| Dropout Voltage | 0.6V @ 1.2A |
| PSRR | 87dB ~ 65dB (120Hz ~ 100kHz) |
Why Choose the LDL1117S33R?
Beyond its technical specifications, this voltage regulator offers exceptional thermal performance thanks to its SOT-223 package, which facilitates efficient heat dissipation in surface-mount applications. Its wide operating temperature range (-40°C to 125°C) ensures reliability in harsh environments, from automotive systems to industrial machinery. The device's high power supply rejection ratio (PSRR) minimizes noise interference, maintaining signal integrity in precision analog circuits.
For designers prioritizing space constraints, the compact SOT-223 footprint enables integration into densely populated PCBs without compromising performance. Whether powering microcontrollers, FPGAs, or communication modules, the LDL1117S33R provides a stable voltage reference while maintaining exceptional load and line regulation characteristics.
Applications and Use Cases
This versatile regulator shines in applications requiring stable 3.3V power supplies, including:
- Industrial automation systems
- Automotive infotainment units
- Consumer electronics peripherals
- Medical instrumentation devices
- Smart home controllers
By combining high current capability with comprehensive protection features, the LDL1117S33R reduces the need for external circuitry, lowering overall system complexity and cost. Its tape-and-reel packaging format further simplifies high-volume manufacturing processes.
Tags: Linear Regulator, Power Management IC, SOT223 Package, Voltage Regulation Solution, Industrial Electronics Component