Texas Instruments LM2931Z-5.0/LFT1, positive fixed 5V LDO regulator, 100 mA output, 0.3V dropout at full load, 55 dB PSRR at 120 Hz, TO-92-3 through-hole package, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Through Hole |
| Voltage - input | 26V |
| Voltage dropout | 0.3V @ 100mA |
| Voltage - output (Min (Fixed)) | 5V |
| Output current | 100mA |
| Current - supply | 15 mA |
| Current - quiescent | 1 mA |
| Operating temperature | -40°C~85°C |
| PSRR | 55dB (120Hz) |
| Package | Bulk |
| Case | TO-226-3, TO-92-3 (TO-226AA) |
| Protection features | Over Temperature, Reverse Polarity, Short Circuit |
| Number of regulators | 1 |
| Output configuration | Positive |
The LM2931Z-5.0/LFT1: 55 dB PSRR at 120 Hz attenuates line-frequency ripple.
Maximum dropout voltage is 0.3 V at 100 mA output. Quiescent current is 1 mA typical, with a 15 mA supply maximum.
On-chip protection covers over-temperature, reverse polarity, and short-circuit — three fault modes common in automotive and industrial environments where the regulator sees raw battery or unregulated DC.
Affects sourcing decisions, requiring design change or alternative part.
Essential for buyers and engineers needing to substitute obsolete part.
Needed by design engineers validating fit and layout.
Buyers need to find stock from distributors or brokers.
Required for verifying electrical characteristics and design-in specifications.
Allows cross-referencing for alternative sourcing.