MIC38C44BN Equivalent & Substitute Parts

Part Overview

The MIC38C44BN is an offline switch IC from Microchip Technology designed for power management applications. This device functions as a converter supporting multiple topologies including Boost, Buck, Flyback, and Forward configurations, operating at 500kHz switching frequency. The MIC38C44BN is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct replacement capability.

Substiute Parts

MIC38C44BN

Microchip TechnologyIn Stock: 2987MIC38C44BN Datasheet

Current PartRFQ

MIC38C44YN

Microchip TechnologyIn Stock: 1491MIC38C44YN Datasheet

Parametric EquivalentRFQ

MIC38C44YN

Microchip TechnologyIn Stock: 1491MIC38C44YN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC38C44BN is determined by strict equivalence across the following critical parameters:

• Package Compatibility: Both main and substitute parts must use 8-DIP (0.300", 7.62mm) through-hole packaging to ensure PCB layout compatibility
• Electrical Specifications: Voltage supply range (9V ~ 20V), startup voltage (14.5V), switching frequency (500kHz), and duty cycle (50%) must be identical
• Topology Support: Both parts must support Boost, Buck, Flyback, and Forward converter topologies
• Isolation and Control: Output isolation and frequency control features must match
• Temperature Range: Operating temperature range of -40°C ~ 150°C (TJ) must be maintained

The MIC38C44YN meets all substitution criteria as a parametric equivalent with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The MIC38C44YN is the direct substitute for the obsolete MIC38C44BN. Selection of the MIC38C44YN is justified by:

• Product Status: The MIC38C44YN maintains active product status, ensuring ongoing availability and manufacturer support, whereas the MIC38C44BN is obsolete
• Regulatory Compliance: The MIC38C44YN is ROHS3 compliant, meeting current environmental and regulatory requirements. The MIC38C44BN is RoHS non-compliant
• Electrical Equivalence: All critical electrical parameters are identical, including supply voltage range, switching frequency, topology support, and operating temperature range
• Package Compatibility: Both parts use identical 8-DIP through-hole packaging, enabling direct PCB substitution without layout modifications
• Certification Status: Both parts maintain identical REACH and ECCN classifications

For new designs or production transitions from the obsolete MIC38C44BN, the MIC38C44YN is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the MIC38C44YN be used as a direct replacement for the MIC38C44BN?

A: Yes. The MIC38C44YN is a parametric equivalent with identical electrical specifications and 8-DIP package configuration. No circuit modifications or PCB layout changes are required for substitution.

Q: What is the primary difference between these parts?

A: The MIC38C44BN is obsolete, while the MIC38C44YN is active. Additionally, the MIC38C44YN is ROHS3 compliant, whereas the MIC38C44BN is RoHS non-compliant. All electrical and mechanical specifications remain identical.

Q: Are there any packaging differences?

A: Both parts use 8-DIP (0.300", 7.62mm) through-hole packaging. The MIC38C44YN is supplied in tube packaging, while the MIC38C44BN packaging type was not specified. This does not affect electrical compatibility or PCB mounting.

Q: Do the parts support the same converter topologies?

A: Yes. Both the MIC38C44BN and MIC38C44YN support Boost, Buck, Flyback, and Forward converter topologies with identical 500kHz switching frequency and 50% duty cycle.

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

A: Both parts operate across -40°C to 150°C junction temperature (TJ), maintaining identical thermal specifications.

Q: Are there any compliance or certification differences?

A: The MIC38C44YN is ROHS3 compliant, meeting current environmental standards. The MIC38C44BN is RoHS non-compliant. Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99).