XC9221B09AMR-G Equivalent & Substitute Parts

Part Overview

The XC9221B09AMR-G is a 16V input step-down DC-DC controller IC manufactured by Torex Semiconductor Ltd. This buck regulator operates as a transistor driver with positive output configuration, designed for single-output applications requiring step-down voltage conversion. The device is classified as active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value
Manufacturer Part Number	XC9221B09AMR-G
Manufacturer	Torex Semiconductor Ltd
Category	Power Management (PMIC)
Packaging	Tape & Reel (TR)
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-25-5
Voltage - Supply (Vcc/Vdd)	2.8V ~ 16V
Frequency - Switching	1MHz
Duty Cycle (Max)	100%
Operating Temperature	-40°C ~ 85°C (TA)
Function	Step-Down
Topology	Buck
Number of Outputs	1
Output Type	Transistor Driver
Output Configuration	Positive
Control Features	Enable, Soft Start
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the XC9221B09AMR-G are identified based on strict parameter equivalence within the XC9220 and XC9221 series. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage Supply Range: 2.8V ~ 16V (all substitutes match)
Package Type: SOT-25-5 / SC-74A, SOT-753 (all substitutes match)
Function: Step-Down Buck Topology (all substitutes match)
Output Configuration: Positive, Single Output (all substitutes match)
Operating Temperature: -40°C ~ 85°C (all substitutes match)
Duty Cycle Maximum: 100% (all substitutes match)
RoHS3 Compliance: All substitutes comply
MSL Rating: 1 (Unlimited) (all substitutes match)

Variable Parameter - Switching Frequency: The XC9221B09AMR-G operates at 1MHz switching frequency. Substitute parts are grouped by switching frequency variants: 300kHz, 500kHz, and 1MHz. Selection depends on application requirements for EMI characteristics, efficiency, and component size constraints.

Series Designation: Substitutes span both XC9220 and XC9221 base product series. Both series share identical electrical specifications and packaging, differing only in internal design revision levels that do not affect functional compatibility.

Parameter Comparison

Part Number	Series	Switching Frequency	Voltage Supply	Package	Control Features	Inventory (Pcs)
XC9221B09AMR-G	XC9221	1MHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	1169
XC9220A093MR-G	XC9220	300kHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	6200
XC9220A09AMR-G	XC9220	1MHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	3200
XC9220B095MR-G	XC9220	500kHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	1107
XC9220C095MR-G	XC9220	500kHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	952
XC9220C09AMR-G	XC9220	1MHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	1152
XC9220D093MR-G	XC9220	300kHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	757
XC9220D095MR-G	XC9220	500kHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	815
XC9221A093MR-G	XC9221	300kHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	961
XC9221A095MR-G	XC9221	500kHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	19049
XC9221A09AMR-G	XC9221	1MHz	2.8V ~ 16V	SOT-25-5	Enable, Soft Start	809

Engineering Selection Recommendations

Direct Frequency-Matched Substitutes (1MHz Operation): For applications requiring identical switching frequency to the XC9221B09AMR-G, select from: XC9220A09AMR-G, XC9220C09AMR-G, or XC9221A09AMR-G. These parts maintain 1MHz operation and are fully compatible with existing circuit designs without modification. All three are active product status with RoHS3 compliance and MSL 1 rating.

Frequency-Variant Substitutes (300kHz or 500kHz Operation): Applications tolerant of lower switching frequencies may select 300kHz variants (XC9220A093MR-G, XC9220D093MR-G, XC9221A093MR-G) or 500kHz variants (XC9220B095MR-G, XC9220C095MR-G, XC9220D095MR-G, XC9221A095MR-G). Lower switching frequencies reduce EMI emissions and component stress but increase output ripple and inductor size requirements. All variants maintain identical supply voltage range, package configuration, and compliance certifications.

Series Selection (XC9220 vs XC9221): Both XC9220 and XC9221 series are functionally equivalent for substitution purposes. Selection between series may be based on inventory availability and supply chain considerations. XC9221A095MR-G offers highest inventory availability (19,049 pcs) for high-volume applications.

Compliance and Regulatory Considerations: All substitute parts maintain ROHS3 compliance, unlimited MSL rating, and active product status. REACH unaffected status and EAR99 ECCN classification are consistent across all variants, ensuring regulatory equivalence for international applications.

Frequently Asked Questions (FAQ)

Q: Can XC9220A09AMR-G directly replace XC9221B09AMR-G in existing designs? A: Yes. Both parts operate at 1MHz switching frequency with identical supply voltage range (2.8V ~ 16V), package type (SOT-25-5), and control features (Enable, Soft Start). No circuit modifications are required for direct substitution.

Q: What is the difference between 300kHz, 500kHz, and 1MHz variants? A: Switching frequency affects EMI characteristics, component sizing, and efficiency profile. Higher frequencies (1MHz) reduce inductor and capacitor sizes but increase switching losses. Lower frequencies (300kHz, 500kHz) reduce EMI and switching losses but require larger passive components. Selection depends on application requirements for noise, efficiency, and board space.

Q: Are XC9220 and XC9221 series interchangeable? A: Yes, for substitution purposes. Both series share identical electrical specifications, package configuration, and compliance ratings. Differences are internal design revisions that do not affect functional compatibility or circuit performance.

Q: Does switching frequency change affect PCB layout or component selection? A: Switching frequency influences inductor and capacitor selection criteria. Lower frequencies require larger inductance values and higher capacitance ratings. PCB layout considerations for trace routing and ground planes remain consistent across all frequency variants due to identical package type and pin configuration.

Q: What inventory considerations apply to substitute selection? A: XC9221A095MR-G offers the highest inventory availability (19,049 pcs), suitable for high-volume production. Other variants range from 757 to 6,200 pcs. Inventory levels should be evaluated against production volume and supply chain lead time requirements.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed maintain ROHS3 compliance, unlimited MSL rating (1), and REACH unaffected status. Regulatory and environmental compliance is equivalent across all variants.

Q: Can lower-frequency variants (300kHz, 500kHz) be used in applications designed for 1MHz operation? A: Frequency-variant substitution requires circuit analysis. Lower frequencies increase output voltage ripple and require larger passive components. Applications with strict ripple specifications or space constraints may not tolerate frequency reduction. Consult application-specific design requirements before selecting frequency variants.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message