LM1117IMPX in LM1117 / LD1117 LDO Family
The LM1117IMPX family, manufactured by Texas Instruments, consists of low-dropout linear regulators (LDOs) designed to provide up to 800mA of output current. These components are industry-standard solutions for local on-card regulation, offering high efficiency through a dropout voltage of 1.2V at maximum load. Packaged in the SOT-223 form factor, they are frequently utilized for converting standard 5V or 12V rails into stable 3.3V or 5V supplies for microcontrollers and digital logic circuits.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Output Type | Output V | Stock |
|---|---|---|---|
| LM1117IMPX-3.3/NOPB (Texas Instruments) | Fixed | 3.3V | 51,850 |
| LM1117IMPX-5.0/NOPB (Texas Instruments) | Fixed | 5V | 3,044 |
| LM1117IMPX-ADJ/NOPB (Texas Instruments) | Adjustable | 1.25V | 6,420 |
Variants within the LM1117IMPX sub-family are primarily distinguished by their output voltage configuration. The series includes fixed-output models for 3.3V and 5.0V operation, which simplify design by eliminating external resistor dividers. The adjustable version (ADJ) allows designers to set the output voltage between 1.25V and 13.8V using two external resistors. All members of this sub-family share the SOT-223-4 package and NOPB lead-free designation.
