Key facts
- Model
- LM78
- Category
- Other Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-04-12
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National Semiconductor LM78LXX Series 3-Terminal Positive Regulators Datasheet
The LM78LXX series provides a range of fixed‑output, three‑terminal positive regulators suitable for logic systems, instrumentation, Hi‑Fi and other solid‑state equipment. They are offered in TO‑92 (Z), SO‑8 (M) and 8‑bump micro‑SMD packages, delivering up to 100 mA output current with built‑in current limiting and thermal overload protection.
Key features include output voltage tolerances of +5 % over temperature, internal short‑circuit current limit, safe‑area protection for the output transistors, and no external components required. Typical performance data, electrical characteristics, and physical dimensions are provided for each fixed‑output variant (5 V, 6.2 V, 8.2 V, 9 V, 12 V, 15 V, etc.).
National Semiconductor LM78 specifications
| Output current | 100 mA |
|---|---|
| Available packages | TO‑92 (Z), SO‑8 (M), 8‑bump micro SMD |
| Output voltage tolerance | +5 % over temperature range |
| Thermal shutdown | Enabled |
| Short‑circuit protection | Internal short circuit current limit |
| Peak output current (typical) | 140 mA |
Source: National Semiconductor LM78LXX Series 3-Terminal Positive Regulators Datasheet
All National Semiconductor LM78 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current of the LM78LXX regulators?
The regulators can deliver up to 100 mA of output current.
From: National Semiconductor LM78LXX Series 3-Terminal Positive Regulators Datasheet
Which package types are offered for the LM78LXX series?
They are available in TO‑92 (Z), SO‑8 (M) and 8‑bump micro‑SMD packages.
From: National Semiconductor LM78LXX Series 3-Terminal Positive Regulators Datasheet
What supply voltage does the LM78 require?
The LM78 operates from a 5 V supply.
From: National Semiconductor LM78 Microprocessor System Hardware Monitor Handbook
How many analog inputs are available on the LM78?
The device provides five positive analog inputs and two inverting inputs for negative voltages.
From: National Semiconductor LM78 Microprocessor System Hardware Monitor Handbook