1 Features

• Input Voltage Range: up to 30 V
• 3.3-V, 5-V, 12-V, and 15-V Versions Available
• Packaged in the Tiny 3-Lead SOT-23 Package
• 30-V Maximum Input for Operation
• 1.2-V Ensured Maximum Dropout Over Full Load and Temperature Ranges
• 100-mA Ensured Minimum Load Current
• ±5% Ensured Output Voltage Tolerance Over Full Load and Temperature Ranges
• −40 to +125°C Junction Temperature Range for Operation

2 Applications

• Tiny Alternative to LM78Lxx Series and Similar Devices
• Tiny 5-V ±5% to 3.3-V, 100-mA Converter
• Post Regulator for Switching DC/DC Converter
• Bias Supply for Analog Circuits

3 Description

The LM3480 is an integrated linear voltage regulator. It features operation from an input as high as 30 V and an ensured maximum dropout of 1.2 V at the full 100-mA load. Standard packaging for the LM3480 is the 3-lead SOT-23 package.

The 5-V, 12-V, and 15-V members of the LM3480 series are intended as tiny alternatives to industry standard LM78Lxx series and similar devices. The 1.2-V quasi-low dropout of LM3480 series devices makes them a nice fit in many applications where the 2-V to 2.5-V dropout of LM78Lxx series devices precludes their (LM78Lxx series devices) use.

The LM3480 series also features a 3.3-V member. The SOT-23 packaging and quasi-low dropout features of the LM3480 series converge in this device to provide a very nice, very tiny, 3.3-V, 100-mA bias supply that regulates directly off the system 5-V ±5% power supply.

1. For all available packages, see the orderable addendum at the end of the data sheet.

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Typical Application Circuit