XC9221D09AMR-G Equivalent & Substitute Parts

Part Overview

The XC9221D09AMR-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	Torex Semiconductor Ltd
Part Number	XC9221D09AMR-G
Category	Power Management (PMIC)
Function	Step-Down Buck Regulator Controller
Input Voltage Range	2.8V ~ 16V
Switching Frequency	1MHz
Duty Cycle (Max)	100%
Output Type	Transistor Driver
Output Configuration	Positive
Number of Outputs	1
Output Phases	1
Control Features	Enable, Soft Start
Operating Temperature	-40°C ~ 85°C
Package Type	SC-74A, SOT-753 (SOT-25-5)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the XC9221D09AMR-G are identified based on strict parameter equivalence within the Torex XC9220 and XC9221 series. The primary substitution criteria are:

Critical Matching Parameters:

Input voltage range: 2.8V ~ 16V (all substitutes match)
Output type: Transistor Driver (all substitutes match)
Output configuration: Positive (all substitutes match)
Topology: Buck (all substitutes match)
Number of outputs: 1 (all substitutes match)
Package: SC-74A, SOT-753, SOT-25-5 (all substitutes match)
Operating temperature: -40°C ~ 85°C (all substitutes match)
Control features: Enable, Soft Start (all substitutes match)
Compliance: ROHS3, MSL 1, REACH Unaffected (all substitutes match)

Variable Parameter (Switching Frequency): The switching frequency differentiates substitute parts into three groups: 300kHz, 500kHz, and 1MHz. The main part XC9221D09AMR-G operates at 1MHz. Substitutes operating at different frequencies remain functionally equivalent for buck regulation topology but may affect circuit performance characteristics such as output ripple, component sizing, and efficiency profiles.

Series Designation: Substitutes span both XC9220 and XC9221 base series, with variants designated by letter (A, B, C, D) and numeric suffix (093, 095, 09) indicating internal configuration differences. All variants maintain identical electrical and mechanical compatibility.

Parameter Comparison

Part Number	Series	Switching Frequency	Input Voltage	Output Type	Package	Inventory (Pcs)
XC9221D09AMR-G	XC9221	1MHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	4014
XC9220A093MR-G	XC9220	300kHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	6200
XC9220A09AMR-G	XC9220	1MHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	3200
XC9220B095MR-G	XC9220	500kHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	1107
XC9220C095MR-G	XC9220	500kHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	952
XC9220C09AMR-G	XC9220	1MHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	1152
XC9220D093MR-G	XC9220	300kHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	757
XC9220D095MR-G	XC9220	500kHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	815
XC9221A093MR-G	XC9221	300kHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	961
XC9221A095MR-G	XC9221	500kHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	19049
XC9221A09AMR-G	XC9221	1MHz	2.8V ~ 16V	Transistor Driver	SOT-25-5	809

Engineering Selection Recommendations

Direct Substitutes (Identical Switching Frequency - 1MHz):

For applications requiring exact frequency matching with XC9221D09AMR-G, the following parts provide direct substitution:

XC9220A09AMR-G (3200 Pcs available)
XC9220C09AMR-G (1152 Pcs available)
XC9221A09AMR-G (809 Pcs available)

All three parts maintain 1MHz switching frequency, identical input voltage range, and equivalent control features. Selection among these options depends on inventory availability and internal circuit variant requirements specified in application documentation.

Frequency-Variant Substitutes (300kHz or 500kHz):

When circuit design permits switching frequency variation, the following parts are electrically and mechanically compatible:

300kHz variants: XC9220A093MR-G, XC9220D093MR-G, XC9221A093MR-G
500kHz variants: XC9220B095MR-G, XC9220C095MR-G, XC9220D095MR-G, XC9221A095MR-G

These substitutes maintain all critical parameters including input voltage range, output configuration, topology, package type, and compliance certifications. Frequency selection affects external component sizing and output ripple characteristics but does not alter fundamental buck regulation functionality.

Compliance and Regulatory Alignment:

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory equivalence with the main part. Product status is active for all listed substitutes, confirming ongoing manufacturer support and supply continuity.

Frequently Asked Questions (FAQ)

Q: Can XC9220 series parts directly replace XC9221D09AMR-G?

A: Yes. XC9220 and XC9221 series parts listed as substitutes maintain identical electrical and mechanical parameters including input voltage range (2.8V ~ 16V), output type (transistor driver), topology (buck), package (SOT-25-5), and control features (enable, soft start). Series designation does not affect substitution compatibility.

Q: What is the impact of switching frequency differences on substitution?

A: Switching frequency (300kHz, 500kHz, or 1MHz) affects external component sizing, output ripple magnitude, and efficiency characteristics but does not alter the buck regulation topology or electrical compatibility. Circuit design must accommodate the selected frequency variant through appropriate inductor and capacitor selection.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use SC-74A, SOT-753 package designation (SOT-25-5 supplier package), enabling direct PCB footprint compatibility without layout modifications.

Q: Do substitute parts require different control signal interfaces?

A: No. All substitute parts maintain identical control features (enable, soft start) and serial interface specifications, ensuring direct signal compatibility with existing circuit designs.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across -40°C to 85°C (TA), matching the main part specification and maintaining thermal performance equivalence.

Q: Are there inventory differences among substitute options?

A: Yes. Inventory levels vary by part number, ranging from 757 Pcs to 19,049 Pcs. XC9221A095MR-G offers the highest availability (19,049 Pcs), while XC9220D093MR-G offers the lowest (757 Pcs). Selection should consider both technical requirements and supply chain availability.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All substitute parts are ROHS3 compliant with MSL 1 rating and REACH unaffected status, ensuring regulatory equivalence and environmental compliance alignment with the main part.

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