Original Part
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA USP-4D
Alternative Part
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA 4-USP (1.2x1.6)
1. XC6221A092GR-G Substitution Conclusion
The XC6221A092GR-G is a direct drop-in replacement for the original part in terms of core electrical performance, package, and functional control. However, careful evaluation is required for applications with stringent static power consumption requirements. The key difference lies in the quiescent current (Iq), which increases from 8µA in the original part to 50µA. Under no-load or light-load conditions, the new device will draw approximately 42µA more current. This directly reduces battery life in designs that rely on long-term battery standby or are highly sensitive to overall system power, such as IoT sensors and wearable devices. For continuously operating systems or those powered by a main supply, this difference is generally acceptable.
2. XC6221B092GR-G Substitution Conclusion
The substitution feasibility for the XC6221B092GR-G is identical to the A version, presenting the same issue of increased quiescent current. Furthermore, as its parameters are identical to the A version but the part number differs, caution is advised for potential undocumented characteristic differences. The core technical deviation from the original part is also the increase in quiescent current (Iq) from 8µA to 50µA, with impacts identical to those described for the A version. When a manufacturer assigns different part numbers (A and B) to products with identical basic electrical parameters, it typically indicates differences in characteristics not listed in the basic parameter table. These may include transient response due to different internal compensation, output noise, or slight variations in the enable (EN) pin logic levels. Prior to substitution, it is essential to thoroughly review and compare the complete datasheets for both parts and perform practical power-on testing to ensure system compatibility and stability.
Analysis ID: EB9D-EBB8000
Based on part parameters and for reference only. Not to be used for procurement or production.
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