STMicroelectronics L4949EDTR-E Linear Voltage Regulator | 5V 100mA Automotive Grade 8-SOIC
- Brand: STMicroelectronics
- Product Code: L4949EDTR-E
- Availability: In Stock
$0.32
- Ex Tax: $0.32
Reliable Automotive-Grade Linear Regulation with L4949EDTR-E
In modern automotive and industrial electronics, precise voltage regulation is critical for maintaining system stability and longevity. The STMicroelectronics L4949EDTR-E emerges as a robust solution for engineers seeking dependable performance in demanding environments. This automotive-qualified linear voltage regulator combines low dropout voltage, integrated protection features, and AEC-Q100 compliance to address the challenges of today's power management applications.
Technical Excellence in Voltage Regulation
Engineered for precision and efficiency, this 5V fixed linear regulator operates with a maximum input voltage of 28V, making it suitable for automotive power systems where transient voltages frequently exceed standard levels. Its advanced design achieves a minimal dropout voltage of just 0.5V at 100mA output current, ensuring stable regulation even under fluctuating load conditions. The device's 300µA quiescent current optimizes energy efficiency while maintaining fast transient response characteristics.
| Parameter | Specification |
|---|---|
| Output Voltage | 5V Fixed |
| Maximum Output Current | 100mA |
| Input Voltage Range | Up to 28V |
| Dropout Voltage | 0.5V @ 100mA |
| Operating Temperature | -40°C to 125°C |
Automotive-Grade Reliability
Built to meet the rigorous demands of automotive applications, the L4949EDTR-E carries AEC-Q100 qualification, guaranteeing performance under extreme temperature variations and mechanical stresses. Its thermal shutdown and short-circuit protection mechanisms prevent damage in fault conditions, while the 8-SOIC surface-mount package ensures mechanical stability during vehicle operation. This combination of features makes it ideal for powertrain control modules, body electronics systems, and in-vehicle infotainment solutions.
Engineers will appreciate the device's compatibility with both ceramic and electrolytic output capacitors, offering design flexibility while maintaining stability. The integrated reset function provides reliable system initialization, crucial for microcontroller-based applications requiring precise power sequencing. With a maximum supply current of 5mA, this regulator demonstrates exceptional efficiency in standby mode operation.
Design Versatility
While specifically targeted at automotive applications, the L4949EDTR-E's performance characteristics make it equally valuable in industrial control systems, portable medical devices, and consumer electronics requiring automotive-grade reliability. Its wide operating temperature range (-40°C to 125°C) and surface-mount package facilitate implementation in space-constrained designs where thermal management is critical.
As vehicle electronics continue evolving with advanced driver assistance systems (ADAS) and electric powertrain technologies, the need for dependable voltage regulation becomes increasingly important. The L4949EDTR-E addresses these challenges through its combination of electrical performance, thermal robustness, and automotive certification, making it a preferred choice for engineers developing next-generation automotive solutions.
Tags: Automotive Electronics, Linear Voltage Regulator, Surface Mount IC, Thermal Protection Circuit, AEC-Q100 Compliance