Request Quote
(Ships tomorrow)
MIC2128YML-T5 Equivalent & Substitute Parts
Part Overview
The MIC2128YML-T5 is a 75V synchronous buck controller manufactured by Microchip Technology, designed for step-down DC-DC conversion applications. This part operates as a transistor driver with positive output configuration and supports input voltage ranges from 4.5V to 75V. The MIC2128YML-T5 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production continuity. Equivalent alternatives maintain the same electrical specifications and package footprint while offering active product status and improved availability.
Substiute Parts
Key Parameters
| Parameter | MIC2128YML-T5 |
|---|---|
| Manufacturer | Microchip Technology |
| Category | Power Management (PMIC) |
| Function | Step-Down Buck Controller |
| Output Type | Transistor Driver |
| Topology | Buck |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage Supply Range (Vcc/Vdd) | 4.5V ~ 75V |
| Switching Frequency | 200kHz ~ 750kHz |
| Maximum Duty Cycle | 85% |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Package / Case | 16-VFQFN Exposed Pad |
| Supplier Device Package | 16-QFN (3x3) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitute parts for the MIC2128YML-T5 are qualified based on the following critical parameters that determine functional equivalence:
Core Electrical Parameters:
- Voltage supply range: 4.5V ~ 75V
- Output topology: Buck (step-down)
- Output configuration: Positive
- Synchronous rectifier capability: Yes
- Maximum duty cycle: 85%
- Operating temperature range: -40°C ~ 125°C
- Package footprint: 16-VFQFN Exposed Pad (3x3mm)
Acceptable Variations:
- Switching frequency range may vary within manufacturer specifications (200kHz minimum, up to 800kHz maximum)
- Control features may differ (Enable, Frequency Control, Power Good, Soft Start, Current Limit)
- Moisture sensitivity level may differ (MSL 2 or MSL 3)
- Product status transition from discontinued to active
All substitute parts maintain identical package geometry, electrical performance envelope, and thermal characteristics required for direct board-level replacement.
Parameter Comparison
| Parameter | MIC2128YML-T5 | MIC2128YML-TR | MIC2128YML-TRVAO | MIC2127AYML-T5 | MIC2127AYML-TR | MIC2127AYML-TRVAO | MIC2104YML-TR | MIC2103YML-TR |
|---|---|---|---|---|---|---|---|---|
| Voltage Supply (Vcc/Vdd) | 4.5V ~ 75V | 4.5V ~ 75V | 4.5V ~ 75V | 4.5V ~ 75V | 4.5V ~ 75V | 4.5V ~ 75V | 4.5V ~ 75V | 4.5V ~ 75V |
| Switching Frequency | 200kHz ~ 750kHz | 200kHz ~ 750kHz | 270kHz ~ 800kHz | 200kHz ~ 800kHz | 200kHz ~ 800kHz | 270kHz ~ 800kHz | 200kHz ~ 600kHz | 200kHz ~ 600kHz |
| Maximum Duty Cycle | 85% | 85% | 85% | 85% | 85% | 85% | 85% | 85% |
| Synchronous Rectifier | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Package / Case | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad |
| Supplier Device Package | 16-QFN (3x3) | 16-QFN (3x3) | 16-QFN (3x3) | 16-QFN (3x3) | 16-QFN (3x3) | 16-QFN (3x3) | 16-MLF® (3x3) | 16-MLF® (3x3) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Discontinued | Active | Active | Active | Active | Active | Active | Active |
| Moisture Sensitivity Level | MSL 3 (168 Hours) | MSL 2 (1 Year) | Not Specified | MSL 3 (168 Hours) | MSL 3 (168 Hours) | Not Specified | MSL 3 (168 Hours) | MSL 2 (1 Year) |
Engineering Selection Recommendations
Primary Recommendation: MIC2128YML-TR
The MIC2128YML-TR is the direct active equivalent of the discontinued MIC2128YML-T5. Both parts share identical electrical specifications, switching frequency range (200kHz ~ 750kHz), control features (Enable, Frequency Control, Power Good, Soft Start), and package geometry. The MIC2128YML-TR maintains active product status with improved MSL rating (MSL 2, 1 Year versus MSL 3, 168 Hours). This part provides seamless board-level substitution with 3,100 units in stock.
Secondary Recommendation: MIC2127AYML-TR
The MIC2127AYML-TR offers extended switching frequency capability (200kHz ~ 800kHz) within the same 16-QFN (3x3) package footprint. This part is suitable for applications requiring higher frequency operation while maintaining all core electrical parameters. Product status is active with 10,524 units in stock, providing excellent availability.
Alternative Recommendation: MIC2104YML-TR
The MIC2104YML-TR operates within a reduced switching frequency range (200kHz ~ 600kHz) but maintains all critical electrical specifications. This part is packaged in 16-MLF® (3x3) format, which is mechanically compatible with the 16-VFQFN footprint. Active product status with 2,400 units in stock.
Alternative Recommendation: MIC2103YML-TR
The MIC2103YML-TR provides equivalent functionality with switching frequency range of 200kHz ~ 600kHz. This part includes current limit control feature and operates with MSL 2 rating. Packaged in 16-MLF® (3x3) format with 2,900 units in stock.
All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity for production applications.
Frequently Asked Questions (FAQ)
Q: Can MIC2128YML-TR be used as a direct replacement for MIC2128YML-T5?
A: Yes. The MIC2128YML-TR is functionally equivalent with identical electrical specifications, switching frequency range, control features, and package footprint. The primary difference is product status (active versus discontinued) and improved moisture sensitivity rating.
Q: What is the difference between MIC2128YML-T5 and MIC2127AYML-TR?
A: Both parts operate within the same voltage supply range (4.5V ~ 75V) and share identical package geometry. The MIC2127AYML-TR supports extended switching frequency operation (200kHz ~ 800kHz versus 200kHz ~ 750kHz). The MIC2128YML-T5 includes Soft Start control feature, while MIC2127AYML-TR does not specify control features.
Q: Are MIC2104YML-TR and MIC2103YML-TR compatible with the original MIC2128YML-T5 package?
A: Both parts use 16-MLF® (3x3) packaging, which is mechanically compatible with the 16-VFQFN Exposed Pad footprint. However, switching frequency range is reduced to 200kHz ~ 600kHz. These parts are suitable for applications where lower switching frequency operation is acceptable.
Q: What does MSL rating mean for component substitution?
A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions before soldering. MIC2128YML-TR (MSL 2, 1 Year) provides extended shelf life compared to MIC2128YML-T5 (MSL 3, 168 Hours). Lower MSL numbers indicate better moisture tolerance and longer storage capability.
Q: Can I use MIC2127AYML-TRVAO as a substitute?
A: Yes. The MIC2127AYML-TRVAO maintains all core electrical specifications and package geometry. It supports extended switching frequency range (270kHz ~ 800kHz) and includes control features (Enable, Frequency Control, Power Good, Soft Start) identical to the original part. Product status is active with 697 units in stock.
Q: What are the key parameters that determine substitution compatibility?
A: Substitution compatibility is determined by: voltage supply range (4.5V ~ 75V), output topology (buck), synchronous rectifier capability, maximum duty cycle (85%), operating temperature range (-40°C ~ 125°C), and package footprint (16-VFQFN or compatible 16-MLF®). Switching frequency range and control features may vary within manufacturer specifications.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts