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MIC2544-2BM Equivalent & Substitute Parts
Part Overview
The MIC2544-2BM is a Power Switch/Driver IC from Microchip Technology, designed for USB switching applications. It features a 1:1 N-Channel high-side output configuration with 1.5A maximum output current and integrated status flag functionality. The device operates across a 2.7V to 5.5V load voltage range with adjustable current limiting and over-temperature protection.
The MIC2544-2BM is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Category | Power Management (PMIC) |
| Switch Type | USB Switch |
| Output Configuration | High Side, N-Channel, 1:1 |
| Output Current (Max) | 1.5A |
| Voltage - Load | 2.7V ~ 5.5V |
| Rds On (Typical) | 80mOhm |
| Fault Protection | Current Limiting (Adjustable), Over Temperature |
| Interface | On/Off |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | -40°C ~ 85°C (TA) |
Substitute Part Grouping Explanation
Substitution for the MIC2544-2BM is determined by the following critical parameters:
- Electrical Specifications: Output current rating (1.5A), load voltage range (2.7V ~ 5.5V), on-resistance (80mOhm typical), and protection features (adjustable current limiting and over-temperature shutdown)
- Functional Configuration: High-side N-Channel switching with 1:1 ratio, on/off interface, and status flag output
- Package Compatibility: 8-SOIC surface mount package with identical pinout and mechanical dimensions
- Base Product Series: MIC2544 family designation
The MIC2544-2YM qualifies as a direct substitute based on identical electrical specifications, functional configuration, and package compatibility. The primary distinction is packaging format (tube versus bulk) and product status (active versus discontinued).
Parameter Comparison
| Parameter | MIC2544-2BM | MIC2544-2YM |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Base Product Number | MIC2544 | MIC2544 |
| Switch Type | USB Switch | USB Switch |
| Number of Outputs | 1 | 1 |
| Ratio - Input:Output | 1:1 | 1:1 |
| Output Configuration | High Side | High Side |
| Output Type | N-Channel | N-Channel |
| Interface | On/Off | On/Off |
| Voltage - Load | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Current - Output (Max) | 1.5A | 1.5A |
| Rds On (Typ) | 80mOhm | 80mOhm |
| Input Type | Non-Inverting | Non-Inverting |
| Features | Status Flag | Status Flag |
| Fault Protection | Current Limiting (Adjustable), Over Temperature | Current Limiting (Adjustable), Over Temperature |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Supplier Device Package | 8-SOIC | 8-SOIC |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Discontinued at DiGi Electronics | Active |
| Packaging Format | Bulk | Tube |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The MIC2544-2YM is the direct substitute for the MIC2544-2BM. Both parts share identical electrical specifications, functional configuration, and mechanical package compatibility.
Product Status Consideration: The MIC2544-2BM is discontinued at DiGi Electronics, while the MIC2544-2YM maintains active product status with confirmed inventory availability (3221 pieces in stock).
Compliance Advantage: The MIC2544-2YM carries ROHS3 compliance certification, whereas the MIC2544-2BM is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the MIC2544-2YM is the appropriate selection.
Packaging Format: The MIC2544-2YM is supplied in tube packaging, compared to bulk packaging for the MIC2544-2BM. This distinction affects handling and storage procedures but does not impact electrical or mechanical compatibility.
Frequently Asked Questions (FAQ)
Q: Are the MIC2544-2BM and MIC2544-2YM electrically identical?
A: Yes. Both parts feature identical electrical specifications including 1.5A output current, 80mOhm on-resistance, 2.7V to 5.5V load voltage range, and protection features (adjustable current limiting and over-temperature shutdown).
Q: Can the MIC2544-2YM be used as a direct replacement in existing designs?
A: Yes. The MIC2544-2YM is pin-compatible and functionally equivalent. No circuit modifications are required for substitution.
Q: What is the difference between bulk and tube packaging?
A: Bulk packaging supplies components in loose form, while tube packaging contains components in protective plastic tubes. Both formats contain identical parts; the difference is in handling, storage, and quantity per container.
Q: Does the ROHS3 compliance of the MIC2544-2YM affect performance?
A: No. ROHS3 compliance indicates material composition standards and does not alter electrical performance or functional characteristics.
Q: Why is the MIC2544-2BM discontinued?
A: Product discontinuation decisions are made by manufacturers based on market demand and product lifecycle management. The MIC2544-2YM remains in active production and is the recommended source for new designs and replacements.
Q: Are there any thermal or reliability differences between these parts?
A: No. Both parts share identical operating temperature range (-40°C to 85°C) and protection mechanisms. Thermal and reliability characteristics are equivalent.
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