LM2596 in LM2596 / LM2576 Switching Regulator Family
The LM2596 series is a widely utilized step-down (buck) switching regulator family capable of driving 3.0A loads with high efficiency. Originally designed by Texas Instruments and now available through manufacturers like onsemi, these integrated circuits operate at a fixed switching frequency of 150kHz. They are specifically engineered to simplify the design of switching power supplies by integrating all control circuitry and a high-side power switch into a single five-lead package, significantly reducing external component count.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Output Type | Output V | Stock |
|---|---|---|---|
| LM2596S-ADJ-EV (EVVO) | Adjustable | 1.2V | 694 |
| LM2596SX-12/NOPB (Texas Instruments) | Fixed | 12V | 1,607 |
Variants within the LM2596 family primarily differ by output voltage configuration and package type. Fixed-output versions provide laser-trimmed voltages of 3.3V, 5.0V, or 12V, while the ADJ variants allow for customization between 1.2V and 37V via an external resistor divider. Packaging options include TO-220 for through-hole mounting and TO-263 (D2PAK) for surface-mount applications, with 'NOPB' suffixes indicating lead-free compliance.
