Key facts
- Model
- LM2595
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-12
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National Semiconductor LM2595 SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator handbook
The LM2595 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2595 series operates at a switching frequency of 150 kHz, allowing smaller sized filter components than what would be needed with lower frequency switching regulators.
National Semiconductor LM2595 specifications
| Output Voltage | 3.3V, 5V, 12V, and adjustable |
|---|---|
| Output Load Current | 1A |
| Switching Frequency | 150 kHz |
| Input Voltage Range | 4.5V to 40V |
| External Components Required | 4 |
| Output Voltage Tolerance | +4% max |
| Oscillator Frequency Tolerance | +15% |
All National Semiconductor LM2595 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the output voltage range for the adjustable version?
The adjustable version output voltage range is 1.2V to 37V.
Does the LM2595 require a heat sink?
No heat sink is required for output voltages less than 12V and ambient temperatures less than 50°C.