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 XC6501C2717R-G
As a direct replacement, the XC6501C2717R-G is compatible in basic functionality and package footprint. However, it exhibits significant performance degradation in key parameters. Its viability as a substitute is therefore highly application-dependent. The primary differences are as follows:
First, its maximum dropout voltage increases from 0.17V @100mA for the Original Part to 0.38V @200mA. Under a full 200mA load, the input voltage must exceed the output by at least 0.38V to maintain regulation, a requirement substantially higher than that of the Original Part. In applications where the input voltage is close to the output, such as battery-powered systems, this could cause the regulator to enter dropout prematurely, thereby reducing the effective operational time of the device.
Second, its Power Supply Rejection Ratio (PSRR) is drastically reduced from 70dB to 50dB (@1kHz). This represents an approximate tenfold decrease in its ability to suppress power supply ripple and noise. In circuits demanding high power supply purity, such as analog or RF stages, this degradation is likely to introduce more noise interference, potentially compromising overall system performance.
2. Substitution Conclusion for XC6501D2717R-G
The substitution conclusion for this part is fundamentally identical to that of the XC6501C2717R-G; it does not offer a comprehensive, high-performance replacement. Based on the provided specifications, the XC6501D2717R-G shares identical core parameters with the 'C' variant, including output voltage, current capability, dropout voltage, quiescent current, and PSRR. Consequently, it suffers from the same performance limitations.
Typically, the distinction between 'C' and 'D' suffixes within the same series relates to differences in Enable (EN) pin control logic (e.g., active-high vs. active-low) or other minor, unlisted features. When evaluating this part for substitution, in addition to accommodating the same increased dropout and reduced PSRR, it is critical to verify that its enable logic is compatible with the original circuit design. If the logic polarity is reversed, a direct replacement could result in the power rail failing to turn on or being unable to shut down.
Analysis ID: CA82-8A4D000
Based on part parameters and for reference only. Not to be used for procurement or production.
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