LM7805SX/NOPB – TEXAS INSTRUMENTS

The LM7805SX/NOPB is a positive 5V, 1A three-terminal linear regulator in a TO-220 surface-mount package (SOP). The “/NOPB” suffix denotes a lead-free, RoHS-compliant package without a lead frame. This regulator features a fixed output voltage of 5V ±5% and operates from an input voltage range of 7V to 20V, providing excellent regulation even with significant input voltage fluctuations. Its internal thermal shutdown and current limiting protect against overloads and short circuits. The LM7805SX/NOPB boasts a typical quiescent current of 8mA, minimizing power dissipation in low-current applications. Its high power dissipation capability (up to 1.5W in free air) makes it suitable for applications requiring significant load current._x000D_
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Common applications include powering 5V digital logic circuits, providing a stable voltage supply for microcontrollers, and regulating the output of unregulated power supplies. The surface-mount TO-220 package optimizes space efficiency in PCB designs, particularly beneficial in compact devices. While offering robust performance, the LM7805SX/NOPB’s simplicity contrasts with switching regulators; it excels in applications where low noise and fast transient response are prioritized over high efficiency, making it ideal for sensitive analog circuits alongside digital components. The lack of external components for basic operation simplifies design and reduces bill of materials cost.