LM2596S in LM2596 / LM2576 Switching Regulator Family
The LM2596S family is a collection of 150 kHz monolithic step-down (buck) voltage regulators manufactured by Texas Instruments in the surface-mount TO-263 (D2PAK) package. These regulators are designed to handle up to 3A of output current with high efficiency compared to linear regulators. Utilizing a simple switching architecture, they minimize external component count while providing robust thermal and electrical protection for board-level power distribution in industrial and consumer electronics environments.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Output Type | Output V | Stock |
|---|---|---|---|
| LM2596S-3.3/NOPB (Texas Instruments) | Fixed | 3.3V | 646 |
| LM2596S-5.0/NOPB (Texas Instruments) | Fixed | 5V | 8,555 |
| LM2596S-ADJ/NOPB (Texas Instruments) | Adjustable | 1.2V | 3,354 |
The LM2596S sub-family is primarily differentiated by output voltage configuration and compliance standards. Variants include fixed output models (3.3V, 5.0V, 12V) which eliminate the feedback resistor network for simplified routing, and the ADJ version which allows custom tuning between 1.2V and 37V. The NOPB suffix indicates lead-free packaging, while EVM models refer to evaluation modules designed for laboratory testing and performance validation.
