Key facts
- Model
- LM2596
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-01
Start here
National LM2596 Step-Down Voltage Regulator Datasheet
The LM2596 series are monolithic step‑down (buck) switching regulators that deliver up to 3 A of output current with excellent line and load regulation. Fixed‑frequency operation at 150 kHz allows the use of small filter components, and the devices are offered in TO‑220 and TO‑263 packages with various lead configurations.
The datasheet details absolute maximum ratings, electrical characteristics, typical performance curves, and mechanical dimensions. It also includes ordering information for fixed‑output versions (3.3 V, 5 V, 12 V) and an adjustable version, as well as safety notices for life‑support applications.
National Semiconductor LM2596 specifications
| Maximum Output Current | 3 A |
|---|---|
| Switching Frequency | 150 kHz |
| Input Voltage Range | Up to 40 V |
| Efficiency (12 V in, 3 A out) | 73 % |
| Standby Current (shutdown pin) | ≈ 80 µA |
Source: National LM2596 Step-Down Voltage Regulator Datasheet
All National Semiconductor LM2596 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the switching frequency of the LM2596?
The LM2596 operates at a fixed internal oscillator frequency of 150 kHz.
What is the maximum continuous output current?
The regulator can supply up to 3 A of output current.
What is the switching frequency of the LM2596?
The LM2596 uses a fixed internal oscillator at 150 kHz.
How much output current can the LM2596 deliver?
It can supply up to 3 A of continuous load current.