Original Part
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA 4-USPN (0.90x1.2)
Alternative Part
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA 4-USPN (0.90x1.2)
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA 4-USPN (0.90x1.2)
1. Substitution Conclusion for XC6221A25A7R-G
The XC6221A25A7R-G can serve as a direct replacement in most applications, but careful evaluation is required for designs extremely sensitive to power consumption.
This device is fully pin-to-pin compatible with the original part, XC6217D25A7R-G, sharing all core specifications: a fixed 2.55V output, 200mA current rating, 6V maximum input voltage, enable control, overcurrent protection, and a 4-XDFN package.
The most critical parameter difference is the quiescent current (Iq). The new device has an Iq of 50µA, compared to just 8µA for the original. In standby or light-load conditions, the newer part's self-consumption is over six times higher. This directly translates to reduced standby time in battery-powered systems.
For battery-operated applications that spend significant time in standby mode (e.g., IoT sensors, portable devices), this substitution may not be ideal. However, for line-powered systems or devices predominantly in active operation, the impact is negligible, making the substitution viable.
2. Substitution Conclusion for XC6221B25A7R-G
Identical to the XC6221A25A7R-G, the XC6221B25A7R-G is a suitable replacement in most cases, with the same caution for power-critical designs.
According to the provided parameters, the technical specifications of the XC6221B25A7R-G and the XC6221A25A7R-G are completely aligned, including the key 50µA quiescent current. These two parts likely represent different versions or test bins of the same silicon design, with no practical performance difference.
Therefore, its substitution feasibility relative to the original XC6217D25A7R-G is identical to the conclusion for the 'A' version: package and basic functionality are compatible, but the increase in quiescent current (Iq) from 8µA to 50µA will similarly and significantly elevate system standby power dissipation. This remains the sole, yet crucial, factor determining suitability for replacement. Direct substitution is acceptable in non-power-sensitive scenarios.
Analysis ID: 3932-91F9000
Based on part parameters and for reference only. Not to be used for procurement or production.
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