Key facts
- Brand
- ON Semiconductor
- Model
- LM2576
- Industry
- Industrial
- Documents
- 5
- Languages
- EN
- Last added
- 2012-05-09
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ON Semiconductor LM2576 Datasheet
The LM2576 series provides monolithic step‑down (buck) regulators available in fixed 3.3 V, 5 V, 12 V, 15 V and adjustable output versions. Designed for high efficiency, the devices require only four external components and can operate without a heatsink in many applications.
Typical applications include high‑efficiency power supplies, pre‑regulators for linear regulators, on‑card switching supplies, and battery‑charger power stages. The datasheet also covers layout guidelines, package dimensions, and ordering information for TO‑220, D2PAK and D2T packages.
ON Semiconductor LM2576 specifications
| Output Current | 3.0 A |
|---|---|
| Input Voltage Range | Up to 45 V |
| Oscillator Frequency | 52 kHz (fixed) |
| Thermal Resistance, Junction‑to‑Ambient | 65 °C/W (TO‑220) |
| Maximum Junction Temperature | 150 °C |
| Moisture Sensitivity Level | MSL 1 |
| External Component Count | 4 |
All ON Semiconductor LM2576 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How many external components are required to use the LM2576?
Only four external components (inductor, catch diode, input and output capacitors) are needed.
What is the fixed internal oscillator frequency of the LM2576?
The LM2576 uses a fixed 52 kHz internal oscillator.
What is the maximum output current of the LM2576?
The LM2576 can deliver a guaranteed output current of 3.0 A.
What is the fixed oscillator frequency of the LM2576?
The device uses a fixed internal oscillator frequency of 52 kHz.
What is the maximum output current of the LM2576?
The LM2576 guarantees a maximum output current of 3.0 A.
What is the input voltage range for the LM2576?
The device can tolerate a supply voltage up to 45 V, with a typical operating range up to 40 V.