The LM78L series (LM78Lxx throughout this document) of positive linear regulators is available with several fixed output voltages, making the devices useful in a wide range of applications. Used as a Zener-diode and resistor combination replacement, the LM78Lxx typically provides an effective output impedance improvement of two orders of magnitude and lower quiescent current. These regulators can provide local, on-card regulation, eliminating distribution problems associated with single-point regulation. The available voltages allow the LM78Lxx to be used in logic systems, instrumentation, HiFi, and other solid-state electronic equipment.
The LM78Lxx with new chip is available in SOIC (D) package and SOT-89 (PK) packages. The LM78Lxx series regulators can deliver up to 100mA output current. Current limiting is included to limit the peak output current to a safe value. If internal power dissipation is too high, the thermal shutdown circuit prevents the IC from overheating.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LM78L 100mA Fixed Output Linear Regulator datasheet (Rev. M) | 10 Feb 2026 | |
| Application note | A Topical Index of TI LDO Application Notes (Rev. F) | 27 Jun 2019 | ||
| Application note | AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) | 06 May 2013 | ||
| Application note | AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) | 06 May 2013 | ||
| More literature | Die D/S LM78L05 MWC 3-Terminal Positive Regulators | 28 Sep 2012 | ||
| Application note | TO-92 Packing Options / Ordering Instructions (Rev. A) | 23 Jun 2010 | ||
| Application note | Packaging Limits Range of Linear Regulators | 08 May 2010 | ||
| Application note | Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) | 04 Jun 2008 | ||
| Application note | Understanding the Terms and Definitions of LDO Voltage Regulators | 21 Oct 1999 |
For additional terms or required resources, click any title below to view the detail page where available.
The UA78L evaluation module (EVM) is a platform for evaluating the operation and performance of the UA78L linear regulator in the PK package. This EVM configuration contains a single 100-mA, three-terminal, low-dropout (LDO) regulator for general applications. The regulator is capable of delivering (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YPB) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| TO-92 (LP) | 3 | Ultra Librarian |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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