The LM3480 Series is a family of compact, fixed-output linear regulators from Texas Instruments. With input up to 30 V, 100 mA load capability, and an ensured ~1.2 V max dropout over full load and temperature, LM3480 delivers clean, reliable power in a tiny 3-lead SOT-23 footprint.
LM3480 is an integrated linear voltage regulator. It supports input voltages as high as 30 V and guarantees a maximum dropout of about 1.2 V at the full 100 mA load. The standard packaging is the 3-lead SOT-23 (DBZ), enabling very compact layouts.
The 5 V, 12 V, and 15 V members are intended as tiny alternatives to industry-standard LM78Lxx devices. Thanks to its quasi-low dropout, LM3480 often fits applications where the typical 2–2.5 V dropout of LM78Lxx prevents their use. The series also includes a 3.3 V version, providing a small, efficient 100 mA bias rail that can regulate directly from a system 5 V ±5% supply.
3-pin footprint (SOT-23 / TO-236-3): VIN, GND, VOUT.
Typical minimal BOM uses 1 µF at VIN and 10 µF at VOUT to ensure stability and transient response. Always consult the device datasheet for capacitor ESR and stability guidance.
| PIN | I/O | DESCRIPTION | |
| NAME | NO. | ||
| OUT | 1 | O | Output voltage |
| IN | 2 | I | Input voltage supply |
| GND | 3 | - | Common ground |
Below are common LM3480 variants from Texas Instruments. The "In Stock" column has been removed.
| Mfr.Part# | Description | Package/Case |
|---|---|---|
| LM3480IM3X-15 | Linear Voltage Regulator IC Positive Fixed 1 Output 100mA SOT-23-3 | SOT23-3 |
| LM3480IM3X-12 | This LDO regulator is designed for stable and reliable voltage regulation in various electronic applications | TO236-3 |
| LM3480IM3-15 | Linear Voltage Regulator IC Positive Fixed 1 Output 100mA SOT-23-3 | SOT23-3 |
| LM3480IM3-12/NOPB | The LM3480IM3-12/NOPB is a low-dropout voltage regulator capable of providing a continuous output current of 100mA at a maximum input voltage of 30V | SOT-23 (DBZ)-3 |
| LM3480IM3X-5.0 | Compact SOT-23 Packaged Low Dropout Regulator, providing a steady 5V output voltage for low-power circuits, with a current capacity of 0 | SOT23-3 |
| LM3480IM3-5.0 | The LM3480IM3-5.0 is a reliable choice for voltage regulation tasks that require efficient performance | SOT-23 (DBZ)-3 |
| LM3480IM3X-5.0/NOPB | The LM3480IM3X-5.0/NOPB is a precision voltage regulator that can deliver up to 100mA of current | SOT-23 (DBZ)-3 |
| LM3480IM3-12 | Linear Voltage Regulator IC Positive Fixed 1 Output 100mA SOT-23-3 | SOT-23 (DBZ)-3 |
| LM3480IM3X-3.3 | Linear Voltage Regulator IC Positive Fixed 1 Output 100mA SOT-23-3 | SOT23-3 |
| LM3480IM3-3.3 | SOT-23 100mA current limit LDO Voltage Regulator | SOT-23 (DBZ)-3 |
| LM3480IM3X-3.3/NOPB | SOT-23 Linear Voltage Regulator with 30V Maximum Input | SOT-23-3 |
| LM3480IM3X-15/NOPB | Linear Voltage Regulator IC Positive Fixed 1 Output 100mA SOT-23-3 | SOT23-3 |
| LM3480IM3X-12/NOPB | Linear Voltage Regulator IC Positive Fixed 1 Output 100mA SOT-23-3 | SOT23-3 |
| LM3480IM3-5.0/NOPB | LM3480IM3-5.0/NOPB: A 100mA Fixed 5V Positive Voltage Regulator in SOT-23 Package, RoHS Compliant | SOT-23 (DBZ)-3 |
| LM3480IM3-3.3/NOPB | Linear Voltage Regulator IC Positive Fixed 1 Output 100mA SOT-23-3 | SOT23-3 |
| LM3480IM3-15/NOPB | LDO Voltage Regulators 100mA Quasi LDO Linear Vtg Reg | SOT-23 (DBZ)-3 |
*All parts manufactured by Texas Instruments.
Yes. The series shares the same 3-pin footprint (VIN, GND, VOUT). Always verify absolute maximum ratings and recommended operating conditions per variant.
In many 5/12/15 V use cases, yes-LM3480 offers a tiny 3-pin alternative with quasi-low dropout (~1.2 V max). Confirm thermal and current requirements.
Typical guidance is 1 µF at VIN and 10 µF at VOUT. Check the datasheet for ESR windows and transient performance recommendations.
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