XC6221A18AMR-G Equivalent & Substitute Parts

Part Overview

The XC6221A18AMR-G is a linear voltage regulator IC manufactured by Torex Semiconductor Ltd, classified as a Power Management (PMIC) component. This device provides a positive fixed output of 1.85V at 200mA in a surface-mount SOT-25 package. The regulator features an enable control function and over-current protection, operating across the industrial temperature range of -40°C to 85°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent substitute parts are identified based on matching electrical specifications and functional characteristics that permit direct replacement in circuit applications.

Substiute Parts

XC6221A18AMR-G

Torex Semiconductor LtdIn Stock: 969XC6221A18AMR-G Datasheet

Current PartRFQ

S-1315A1J-M5T1U3

ABLIC Inc.In Stock: 992S-1315A1J-M5T1U3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the XC6221A18AMR-G are identified through parametric equivalence based on the following critical electrical and mechanical criteria:

Matching Parameters (Required for Substitution):

• Output configuration: Positive
• Output type: Fixed
• Number of regulators: 1
• Fixed output voltage: 1.85V
• Output current rating: 200mA
• Control features: Enable function
• Protection features: Over-current protection
• Operating temperature range: -40°C to 85°C
• Mounting type: Surface mount
• RoHS3 compliance status
• MSL rating: 1 (Unlimited)

Allowable Variations:

• Input voltage maximum (6V vs. 5.5V): Substitute operates within lower input range
• Dropout voltage: Substitute exhibits higher dropout (0.486V @ 200mA vs. 0.21V @ 100mA)
• Quiescent current: Substitute demonstrates lower Iq (1 µA vs. 50 µA)
• PSRR: Substitute rated at 60dB vs. 70dB at 1kHz
• Package designation: Both use SC-74A/SOT-753 footprint with different supplier package labels (SOT-25 vs. SOT-23-5)

The S-1315A1J-M5T1U3 qualifies as a parametric equivalent based on functional compatibility and electrical performance within acceptable tolerances for the specified application.

Parameter Comparison

Engineering Selection Recommendations

Both the XC6221A18AMR-G and S-1315A1J-M5T1U3 are active production components with ROHS3 compliance and identical MSL ratings. Selection between these parts is determined by application-specific requirements:

XC6221A18AMR-G Selection Criteria:

• Applications requiring maximum input voltage tolerance up to 6V
• Circuits where lower dropout voltage (0.21V @ 100mA) is critical
• Designs prioritizing higher power supply rejection ratio (70dB @ 1kHz)
• Tape & Reel packaging for high-volume manufacturing

S-1315A1J-M5T1U3 Selection Criteria:

• Applications with input voltage limited to 5.5V maximum
• Designs where ultra-low quiescent current (1 µA) reduces standby power consumption
• Cut Tape packaging for lower-volume or prototype applications
• Circuits where higher dropout voltage (0.486V @ 200mA) is acceptable

Both parts maintain identical output voltage (1.85V), output current (200mA), control features (Enable), protection (Over-current), and operating temperature range (-40°C to 85°C). Footprint compatibility is confirmed through matching SC-74A/SOT-753 package designations.

Frequently Asked Questions (FAQ)

Q: Can the S-1315A1J-M5T1U3 directly replace the XC6221A18AMR-G on existing PCBs?

A: Yes, direct PCB replacement is possible. Both parts use identical SC-74A/SOT-753 footprints and surface-mount technology. However, circuit performance differences exist due to variations in dropout voltage and quiescent current specifications.

Q: What is the impact of the higher dropout voltage in the S-1315A1J-M5T1U3?

A: The S-1315A1J-M5T1U3 exhibits 0.486V dropout at 200mA compared to 0.21V @ 100mA for the XC6221A18AMR-G. This difference affects minimum input voltage requirements and power dissipation. Applications with tight input voltage margins must account for this specification.

Q: Does the lower quiescent current of the S-1315A1J-M5T1U3 provide advantages?

A: The S-1315A1J-M5T1U3 quiescent current of 1 µA versus 50 µA for the XC6221A18AMR-G reduces standby power consumption. This advantage is significant in battery-powered or always-on applications where quiescent current directly impacts system power budget.

Q: Are there input voltage limitations when substituting these parts?

A: Yes. The XC6221A18AMR-G supports input voltages up to 6V, while the S-1315A1J-M5T1U3 is rated to 5.5V maximum. Circuits operating near 6V input must use the XC6221A18AMR-G to remain within specification.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is used for automated high-volume assembly with continuous tape feeding. Cut Tape (CT) packaging provides individual component segments cut from the tape, suitable for lower-volume production or manual assembly. Both formats use identical component specifications and footprints.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the XC6221A18AMR-G and S-1315A1J-M5T1U3 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Compliance certifications are identical.

Q: How do the PSRR specifications affect circuit performance?

A: Power Supply Rejection Ratio (PSRR) measures the regulator's ability to reject input voltage noise. The XC6221A18AMR-G provides 70dB @ 1kHz versus 60dB @ 1kHz for the S-1315A1J-M5T1U3. Applications requiring superior noise rejection benefit from the higher PSRR of the XC6221A18AMR-G.

Q: Are both parts suitable for the full -40°C to 85°C operating range?

A: Yes. Both regulators are specified for identical operating temperature ranges of -40°C to 85°C (TA), supporting industrial and extended commercial applications.