BOM Risk Notes
Confirm lifecycle status, required quantity, destination country, and acceptable alternates before locking the order.
Power & Circuit Protection
LM2596S-5.0
Fixed 5V output, 3A step-down (buck) switching voltage regulator with 150 kHz switching frequency, TO-263 SMD.
Applications and Features
Primary Features
- Package: TO-263
- Packaging: N/A
- RoHS: Compliant
Typical Applications
- Industrial and embedded DC/DC step-down power rails
- Power & Circuit Protection related design scenarios
Product Overview
The LM2596S series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. Key Features: - Fixed 5V output, 3A load capability - Input voltage: 8V to 40V - Switching frequency: 150 kHz - Efficiency up to 77% (5V from 12V @ 3A) - Internal 52kHz oscillator - Requires minimal external components (inductor + 2 capacitors + 1 diode) - Over-temperature and current limiting protection - TO-263 (D2PAK) surface mount package
Procurement Notes
Use this page as a sourcing reference. Final availability, MOQ, lead time, and compliance assumptions should be confirmed through RFQ before ordering this part.
Substitute Selection Notes
When the original MPN is constrained, compare package, ratings, tolerance, temperature range, and compliance status before approving an alternate.
Typical Use Cases
Suitable for BOM review, maintenance sourcing, prototype replenishment, production-gap purchasing, and alternative-part screening.
Full Parameter Table
| Attributes | Value |
|---|---|
| Package / Case | TO-263 |
| Operating Temperature | -40 to +125 °C |
| Efficiency Pct | 77 |
| Input Voltage V | 8–40 |
| Output Current A | 3 |
| Output Voltage V | 5 |
| Switching Freq Khz | 150 |