MIC38HC44-1BN Equivalent & Substitute Parts

Part Overview

The MIC38HC44-1BN is an offline switch IC manufactured by Microchip Technology, designed for power management applications in multiple converter topologies including Boost, Buck, Flyback, and Forward configurations. Operating at 500kHz switching frequency with a 50% duty cycle, this component is classified as a Power Management PMIC with internal switching capability and isolated output.

The MIC38HC44-1BN is currently listed as obsolete. Identifying suitable substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or repair requirements for systems utilizing this topology.

Substiute Parts

MIC38HC44-1BN

Microchip TechnologyIn Stock: 2813MIC38HC44-1BN Datasheet

Current PartRFQ

MIC38HC44-1YN

Microchip TechnologyIn Stock: 764MIC38HC44-1YN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC38HC44-1BN is determined by strict equivalence across the following critical parameters:

• Package / Case: 14-DIP (0.300", 7.62mm) form factor with Through Hole mounting
• Voltage - Supply (Vcc/Vdd): 9V ~ 20V operating range
• Voltage - Start Up: 14.5 V threshold
• Frequency - Switching: 500kHz operation
• Duty Cycle: 50%
• Operating Temperature: -40°C ~ 150°C (TJ)
• Output Isolation: Isolated configuration
• Internal Switch(s): Integrated switching capability
• Control Features: Frequency Control functionality
• Topology Support: Boost, Buck, Flyback, Forward converter types

The MIC38HC44-1YN meets all specified electrical and mechanical parameters, establishing direct substitution compatibility with the obsolete MIC38HC44-1BN.

Parameter Comparison

Engineering Selection Recommendations

The MIC38HC44-1YN is the direct substitute for the obsolete MIC38HC44-1BN. Both components share identical electrical specifications and mechanical packaging, ensuring pin-for-pin and functional compatibility.

The MIC38HC44-1YN offers the additional advantage of Active product status, indicating ongoing manufacturer support and availability. The MIC38HC44-1YN also achieves ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the MIC38HC44-1BN is RoHS non-compliant.

For new designs or component replenishment, the MIC38HC44-1YN is the appropriate selection. The component is available in Tube packaging and maintains full electrical and thermal performance across the specified operating range.

Frequently Asked Questions (FAQ)

Q: Can the MIC38HC44-1YN directly replace the MIC38HC44-1BN in existing designs?

A: Yes. The MIC38HC44-1YN is electrically and mechanically equivalent to the MIC38HC44-1BN. Both components feature identical pin configurations in 14-DIP packaging, matching voltage supply ranges (9V ~ 20V), switching frequency (500kHz), duty cycle (50%), and operating temperature range (-40°C ~ 150°C). No circuit modifications are required.

Q: What is the primary difference between these two part numbers?

A: The MIC38HC44-1BN is obsolete, while the MIC38HC44-1YN is an active product with current manufacturer support. The MIC38HC44-1YN also achieves ROHS3 compliance, whereas the MIC38HC44-1BN is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: Both components use 14-DIP (0.300", 7.62mm) Through Hole packaging. The MIC38HC44-1YN is supplied in Tube packaging, while the MIC38HC44-1BN packaging type is not specified. This does not affect electrical compatibility or board-level integration.

Q: What converter topologies are supported by the MIC38HC44-1YN?

A: The MIC38HC44-1YN supports Boost, Buck, Flyback, and Forward converter topologies with isolated output configuration and integrated internal switching capability.

Q: Is the MIC38HC44-1YN suitable for designs requiring RoHS compliance?

A: Yes. The MIC38HC44-1YN is ROHS3 compliant, meeting current environmental and regulatory requirements for component selection in compliant designs.