Key facts
- Model
- LM2576
- Industry
- Industrial
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- 3
- Languages
- ZH · EN
- Last added
- 2022-10-21
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LM2576 Buck Switching Regulator Datasheet
The document describes the LM2576 as a step-down switching regulator featuring low quiescent current and high efficiency. It supports both fixed output voltages (3.3V, 5V, 12V, 15V) and an adjustable configuration ranging from 1.23V to 30V. This manual is written in Chinese.
Read onlineNational Semiconductor LM2576 specifications
| Output voltage options | 3.3 V, 5 V, 12 V, 15 V, adjustable |
|---|---|
| Fixed switching frequency | 52 kHz |
| Maximum output current | 3 A |
| Input voltage range | 40 V – 60 V (HV version) |
| Standby current (shutdown) | ≈50 µA typical |
| External components required | 4 |
Source: National Semiconductor LM2576/LM2576HV Simple Switcher 3A Step-Down Voltage Regulator Datasheet
All National Semiconductor LM2576 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the fixed switching frequency of the LM2576?
The regulator uses a 52 kHz fixed‑frequency internal oscillator.
From: National Semiconductor LM2576/LM2576HV Simple Switcher 3A Step-Down Voltage Regulator Datasheet
How many external components are needed to build a basic LM2576 circuit?
Only four external components are required.
From: National Semiconductor LM2576/LM2576HV Simple Switcher 3A Step-Down Voltage Regulator Datasheet