LM3480IM3-12/NOPB

Product Overview

The Texas Instruments LM3480IM3-12/NOPB is a fixed-output linear voltage regulator intended for positive-voltage regulation in compact surface-mount designs. It provides a single 12V output with a rated output current of 100mA and accepts input voltages up to 30V. The device includes over-current and over-temperature protection functions and specifies a dropout voltage of 1.2V at 100mA. Quiescent current is 2 mA, and the operating temperature range is -40°C ~ 125°C. The regulator uses a TO-236-3, SC-59, SOT-23-3 package for surface-mount assembly.

Key Features

• Fixed 12V positive output with 100mA output current
• Maximum input voltage of 30V
• Dropout voltage of 1.2V at 100mA
• Quiescent current of 2 mA
• Over-current and over-temperature protection
• Operating temperature range of -40°C ~ 125°C
• Surface-mount SOT-23-3 package
• Single regulator with TO-236-3, SC-59, SOT-23-3 package

Applications

• Regulating a 12V rail for small-signal circuits
• Post-regulation from an unregulated DC supply
• Local voltage regulation for sensors or instrumentation modules
• 12V supply conditioning in embedded control boards

Design & Procurement Notes

Design considerations include ensuring input voltage headroom accounts for the 12V output and the 1.2V dropout at 100mA while not exceeding 30V maximum input. The 100mA output limit and 2 mA quiescent current should be accounted for in load and power budget planning. The SOT-23-3 surface-mount package and -40°C ~ 125°C operating range affect layout and thermal planning. Over-current and over-temperature protection should be considered in system protection planning. Since the output is fixed at 12V, applications requiring adjustable or different output voltages need a different regulator.