IXD3221A09AMR-G Equivalent & Substitute Parts

Part Overview

The IXD3221A09AMR-G is a buck regulator positive output step-down DC-DC controller IC manufactured by Zilog in SOT-25 packaging. This device functions as a transistor driver for step-down topology applications with a single output phase and 1MHz switching frequency. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the original IXD3221A09AMR-G is unavailable due to inventory constraints, supply chain disruptions, or when alternative manufacturers' equivalents offer improved availability or lead times while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer	Zilog
Part Number	IXD3221A09AMR-G
Category	Power Management (PMIC)
Function	Step-Down Buck Regulator Controller
Output Type	Transistor Driver
Topology	Buck
Number of Outputs	1
Output Phases	1
Voltage Supply Range (Vcc/Vdd)	2.8V ~ 16V
Switching Frequency	1MHz
Duty Cycle (Max)	100%
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-25
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the IXD3221A09AMR-G are qualified based on the following critical parameters that must match or be compatible:

Mandatory Matching Parameters:

Topology: Buck (step-down)
Output Type: Transistor Driver
Output Configuration: Positive
Number of Outputs: 1
Output Phases: 1
Voltage Supply Range: 2.8V ~ 16V
Duty Cycle (Max): 100%
Operating Temperature: -40°C ~ 85°C (TA)
Package / Case: SC-74A, SOT-753
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
MSL Rating: 1 (Unlimited)

Variable Parameter (Allowed Variation):

Switching Frequency: The IXD3221A09AMR-G operates at 1MHz. Substitute parts with switching frequencies of 300kHz, 500kHz, or 1MHz are functionally equivalent for this application category, as the frequency variation falls within acceptable design margins for buck controller topology.

All qualified substitutes are manufactured by Torex Semiconductor Ltd under the XC9220 and XC9221 series, maintaining identical electrical characteristics, package specifications, and compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Switching Frequency	Voltage Supply (Vcc/Vdd)	Duty Cycle (Max)	Operating Temperature	Package	RoHS Status	Inventory (Pcs)
IXD3221A09AMR-G	Zilog	1MHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25	ROHS3	672
XC9220A093MR-G	Torex Semiconductor Ltd	300kHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	6200
XC9220A09AMR-G	Torex Semiconductor Ltd	1MHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	3200
XC9220B095MR-G	Torex Semiconductor Ltd	500kHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	1107
XC9220C095MR-G	Torex Semiconductor Ltd	500kHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	952
XC9220C09AMR-G	Torex Semiconductor Ltd	1MHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	1152
XC9220D093MR-G	Torex Semiconductor Ltd	300kHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	757
XC9220D095MR-G	Torex Semiconductor Ltd	500kHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	815
XC9221A093MR-G	Torex Semiconductor Ltd	300kHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	961
XC9221A095MR-G	Torex Semiconductor Ltd	500kHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	19049
XC9221A09AMR-G	Torex Semiconductor Ltd	1MHz	2.8V ~ 16V	100%	-40°C ~ 85°C	SOT-25-5	ROHS3	809

Engineering Selection Recommendations

All substitute parts listed maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. The XC9220 and XC9221 series from Torex Semiconductor Ltd are direct functional equivalents with identical electrical specifications and package compatibility.

For applications requiring 1MHz switching frequency matching the original IXD3221A09AMR-G, select XC9220A09AMR-G or XC9220C09AMR-G. Both parts offer 1MHz operation with superior inventory availability (3200 and 1152 units respectively) compared to the original part (672 units).

For applications where switching frequency variation is acceptable within design margins, XC9221A095MR-G provides the highest inventory level (19049 units) with 500kHz operation, ensuring immediate availability for high-volume production requirements.

All qualified substitutes maintain MSL 1 (Unlimited) rating and REACH Unaffected status, supporting deployment in moisture-sensitive and regulated supply chain environments without additional qualification.

Frequently Asked Questions (FAQ)

Q: Can XC9220 series parts replace IXD3221A09AMR-G in existing designs?

A: Yes. XC9220 and XC9221 series parts are parametric equivalents with identical voltage supply range (2.8V ~ 16V), duty cycle (100%), operating temperature (-40°C ~ 85°C), and package specifications (SOT-25). Switching frequency variation (300kHz, 500kHz, or 1MHz) does not affect functional compatibility for buck controller topology applications.

Q: What is the difference between SOT-25 and SOT-25-5 packaging?

A: Both designations refer to the same physical package form factor (SC-74A, SOT-753). The "-5" suffix in SOT-25-5 indicates a 5-pin configuration, which is standard for this device category. Pin-to-pin compatibility is maintained across all listed parts.

Q: Are there control feature differences between substitute parts?

A: The original IXD3221A09AMR-G includes Enable and Soft Start control features. Some substitute parts (XC9221A095MR-G and XC9221A09AMR-G) list control features as not specified in the provided data. Verify control feature requirements against specific application needs before final selection.

Q: Which substitute part offers the best inventory availability?

A: XC9221A095MR-G provides the highest inventory level at 19049 units. This part operates at 500kHz switching frequency and is suitable for applications where frequency variation is acceptable.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All listed substitute parts maintain ROHS3 compliance, REACH Unaffected status, MSL 1 (Unlimited) rating, and identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications as the original IXD3221A09AMR-G.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message