STMicroelectronics L7805CD2T-TR Linear Voltage Regulator 5V 1.5A D2PAK

Reliable Voltage Regulation for Demanding Applications

The STMicroelectronics L7805CD2T-TR linear voltage regulator represents a benchmark in fixed-output power management solutions. This D2PAK packaged device delivers precise 5V regulation with exceptional stability across industrial, automotive, and embedded systems applications. As part of STMicroelectronics' renowned L78 series, this component combines robust protection features with high-current capability in a surface-mount package optimized for modern electronics design.

Technical Excellence in Power Management

Engineered to handle input voltages up to 35V while maintaining a rock-solid 5V output, this linear regulator demonstrates remarkable versatility in power supply architectures. Its 1.5A output current capacity makes it ideal for powering microcontrollers, sensors, and peripheral circuits in environments where stable voltage references are critical. The device's 2V dropout voltage at 1A load ensures efficient operation even under fluctuating input conditions, while the 62dB PSRR (Power Supply Rejection Ratio) at 120Hz guarantees clean output unaffected by input ripple.

Advanced Protection Architecture

Designed with comprehensive safety mechanisms, the L7805CD2T-TR incorporates both over-temperature and short-circuit protection systems. These built-in safeguards prevent damage during fault conditions while maintaining operational integrity in harsh environments. The device's thermal shutdown feature automatically reduces current output when safe operating temperatures are exceeded, ensuring longevity even in high-ambient conditions.

Its TO-263AB (D2PAK) surface-mount package offers excellent thermal dissipation characteristics through the exposed tab, enabling efficient heat management without requiring complex heatsinking solutions. This makes it particularly suitable for space-constrained designs where thermal performance remains critical.

Design Flexibility Across Industries

The L7805CD2T-TR's combination of high current capability and industrial temperature range (-40°C to 125°C) makes it suitable for a diverse range of applications. From factory automation equipment and motor control systems to automotive electronics and test instrumentation, this voltage regulator serves as a dependable power foundation. Designers particularly value its minimal external component requirements, typically needing only input/output capacitors for stable operation.

In renewable energy systems, it provides reliable regulation for monitoring circuits and control modules. Industrial IoT implementations benefit from its noise rejection capabilities when powering precision sensors and communication interfaces. The device's inherent stability and transient response characteristics make it well-suited for applications requiring consistent voltage references in dynamic load environments.

Performance-Driven Design Considerations

While primarily a fixed-output regulator, the L7805CD2T-TR can be adapted for adjustable configurations using external resistors. This flexibility allows engineers to tailor output voltages while maintaining the core benefits of STMicroelectronics' proven architecture. The device's 8mA quiescent current during operation contributes to overall system efficiency, particularly in standby or low-power modes.

For high-volume manufacturing applications, the tape & reel packaging format facilitates automated assembly processes. The component's compatibility with standard reflow soldering profiles simplifies PCB integration while maintaining production yields. Design resources including thermal calculation tools and application notes are readily available through STMicroelectronics' technical support channels.

Tags: Power Management, Voltage Regulation, Industrial Electronics, Automotive Components, Surface Mount ICs