Texas Instruments SIMPLE SWITCHER® LM2576T-15/NOPB, Step-Down Buck Regulator, Fixed 15V Output, 3A, 52kHz Switching, Through-Hole TO-220-5, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Series | SIMPLE SWITCHER® |
| Output type | Fixed |
| Mounting | Through Hole |
| Voltage - input | 40V |
| Voltage - output (Min (Fixed)) | 15V |
| Output current | 3A |
| Frequency - switching | 52kHz |
| I/O channels | 1 |
| Operating temperature | -40°C~125°C(TJ) |
| Package | Tube |
| Function | Step-Down |
| Topology | Buck |
| Case | TO-220-5 |
| Output configuration | Positive |
| Synchronous rectifier | No |
The Texas Instruments LM2576T-15/NOPB is a SIMPLE SWITCHER® step-down buck regulator delivering a fixed 15 V output at up to 3 A from a 4 V to 40 V input. Typical applications include point-of-load regulation for industrial control boards, motor drives, and telecom power supplies where a single 15 V rail is needed.
The 4 V to 40 V input range covers unregulated supplies. The fixed 15 V output is not adjustable.
A close functional peer is the LMR33630APCQRNXRQ1, which is also a 3 A buck regulator but operates at 2.1 MHz and is surface-mount only (no through-hole option). The LMS3655MQURNLRQ1 is a 5.5 A automotive-grade part with a higher switching frequency. Neither is a drop-in replacement — the LM2576T-15/NOPB is a through-hole, fixed 15 V, 52 kHz part, and the peers are surface-mount with different output voltages or adjustable outputs. For a direct through-hole replacement, stay with the LM2576T-15/NOPB or its sibling fixed-voltage variants.