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. XC6501C25A7R-G Substitution Conclusion
The XC6501C25A7R-G is pin‑compatible with the original part in terms of basic functionality and package, but significant performance differences exist that require careful evaluation before substitution. The key deviations are:
1) Increased Dropout Voltage (Vdrop): Vdrop rises from 0.17V@100mA to 0.38V@200mA. At full 200mA load, the substitute requires a higher input voltage (at least Vout + 0.38V) to maintain regulation. If the original design has insufficient input voltage margin, output voltage sag or failure may occur.
2) Higher Quiescent Current (Iq): Iq increases from 8µA to 19µA, more than doubling the power dissipation under standby or light‑load conditions. This is unfavorable for battery‑powered or other low‑power‑sensitive applications.
3) Reduced Power Supply Rejection Ratio (PSRR): PSRR drops from 70dB to 50dB (@1kHz). The substitute exhibits noticeably poorer suppression of supply ripple and noise, which could degrade performance in noise‑sensitive circuits such as RF or precision analog systems.
Substitution may be acceptable if the application is not sensitive to input voltage margin, power consumption, or supply noise. Otherwise, direct replacement is not recommended.
2. XC6501D25A7R-G Substitution Conclusion
The feasibility conclusion for substituting the XC6501D25A7R-G is identical to that for the XC6501C25A7R-G, as all key parameters—including dropout voltage, quiescent current, and PSRR—are exactly the same. These two devices are likely different sub‑variants within the same XC6501 series, possibly differing only in internal production lots, test criteria, or minor unlisted characteristics (such as enable‑pin response time).
The substitution assessment is therefore the same: while pin‑compatible, the part also suffers from higher dropout, increased power consumption, and weaker noise rejection. In selection, it can be treated as electrically equivalent to the XC6501C25A7R-G, and the final substitution decision should be based on the same application‑condition evaluation.
Analysis ID: 1D7E-1388000
Based on part parameters and for reference only. Not to be used for procurement or production.
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