RT9193-25GB
RICHTEK
Needs validationmedium risk
A pin-compatible alternative from the same family, but with a lower 2.5V output voltage that requires engineering review.
Best Alternatives to RT9193-28GB
Finding a replacement for the RT9193-28GB LDO requires careful review of pinout and electrical specs. While several parts exist in the same SOT-23-5 package, no direct drop-in replacement has been identified, and most alternatives require board changes or have a different output voltage.
AI replacement insight
Package riskhigh
Pinout mismatches are common and require board redesign.
Electrical riskmedium
Candidates may have different voltage, or be adjustable, requiring validation.
Can it be replaced directly?
No direct drop-in replacement was identified. All viable candidates require either board redesign or have a different output voltage.
Best replacement path
For existing boards, find a 2.8V LDO with the same pinout. For new designs, RT9013-28GB is an option if the new pinout is adopted.
Main risk
Pinout incompatibility is the main risk. Several similar LDOs in SOT-23-5 have different pin assignments, requiring a board redesign.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | RT9193-28GB | RT9193-25GB | RT9013-28GB | BL9193-ADBAPRN | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 / SOT23-5 — Same package and pin count.; RT9013-28GB: Same package and pin count.; BL9193-ADBAPRN: Package matches.; RY6050-ADJM5R: Package matches. |
| Pinout | Compatible | Compatible | Not compatible | Not compatible | Compatible / Not compatible — Same RT9193 family, pinout matches.; RT9013-28GB: Pin 1/3 (VIN/EN) are swapped. Requires board redesign.; BL9193-ADBAPRN: Pin 4 is ADJ, not BP. Requires board changes.; RY6050-ADJM5R: Pin 4 is ADJ, not BP. Requires board changes. |
| Voltage | 2.8V | 2.5V | 2.8V | Adjustable | 2.5V / 2.8V / Adjustable — Lower output voltage. Verify system tolerance.; RT9013-28GB: Output voltage matches.; BL9193-ADBAPRN: Requires external resistors to set voltage.; RY6050-ADJM5R: Requires external resistors to set voltage. |
| Current | 300mA | 300mA | 500mA | 300mA | 300mA / 500mA — Output current matches.; RT9013-28GB: Higher output current capability.; BL9193-ADBAPRN: Output current matches.; RY6050-ADJM5R: Higher output current. |
Application & sourcing insights
Questions & answers
There is no single best alternative. RT9193-25GB is pin-compatible but has a lower 2.5V output. RT9013-28GB has the correct voltage but requires a board redesign due to a different pinout.