Texas Instruments Fixed 5V LDO Voltage Regulator 100mA SOIC-8

Texas Instruments Fixed 5V LDO Voltage Regulator is a single-output, low-dropout (LDO) voltage regulator that provides a fixed 5V output with a maximum current of 100mA. Supplied in a compact, surface-mount SOIC-8 package, it is designed for stable and efficient power management in a wide range of low-power electronic applications.

Overview

The regulator accepts an exceptionally broad input voltage range from 5.4V up to 30V, with a typical low dropout voltage of 380mV. This allows reliable operation even as the input supply approaches the output level.

Dual-Mode Operation

By default, the regulator is configured as a fixed 5V device by connecting the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together. It can also be reconfigured for adjustable output. By leaving the SENSE and VTAP pins open and implementing an external resistor divider on the FEEDBACK pin, the output voltage can be set to any value between 1.235V and 30V.

Performance and Protection

With a typical quiescent current of 75µA, the regulator supports efficiency in battery-powered devices. Typical line regulation of 0.03% and typical load regulation of 0.04% help maintain a stable output despite fluctuations in input voltage or load current. Built-in current limiting and thermal shutdown safeguard the regulator and downstream circuitry. An error flag output provides a low-voltage signal to indicate when the output is falling out of regulation, enabling proactive system monitoring.

Key Features

• Fixed 5V output with a maximum current of 100mA
• Adjustable output up to 30V using an external resistor divider
• Input voltage range from 5.4V to 30V
• Typical dropout voltage of 380mV
• Typical quiescent current of 75µA
• Error flag output for output regulation monitoring
• Manufactured without antimony or brominated flame retardants
• Dimensions: Width 3.3, Depth 1.5, Height 4.3
• Weight: 0.2 g

The regulator is housed in a compact SOIC-8 surface-mount package, making it well suited to modern PCB assemblies. Its small footprint and dual-mode capability offer significant design flexibility from a single component.