LM2575T-5 Step-Down 5V 1A Buck Voltage Regulator IC (TO-220-5)
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Prices updated: 14 Oct 2026
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About this product
LM2575T-5 is a fixed 5 V step-down (buck) switching regulator IC that delivers up to 1 A and accepts input voltages up to 40 V. It runs at a fixed 52 kHz switching frequency and needs only a few external components. It is an efficient alternative to linear regulators for powering microcontroller and sensor circuits from a higher-voltage supply.
Specifications
- Output voltage
- 5 V (fixed)
- Output current
- 1 A (guaranteed)
- Input voltage
- Up to 40 V
- Switching frequency
- 52 kHz
- Topology
- Step-down (buck)
- Package
- TO-220, 5-lead
- Shutdown
- TTL shutdown capability
Frequently asked questions
What external components are required?
The listing states that it requires only four external components. Typically these are an inductor, a catch diode, and input and output capacitors. Use the values from the datasheet's typical application circuit for your chosen input voltage.
Can it replace a 7805 regulator?
For a 5 V output with a higher input voltage, it is more efficient than a 7805 because it is a switching regulator. It produces switching noise, so keep the inductor and diode loop short and place output capacitors close to the IC. Linear regulators may be preferred for noise-sensitive analog circuits.
