MIC5157BN Linear Regulator Controller IC Equivalent & Substitute Parts

Part Overview

The MIC5157BN is a Linear Regulator Controller IC designed for positive fixed output applications in power management circuits. This device features a single output configuration with input voltage range of 3V to 36V and operates across the industrial temperature range of -40°C to 85°C. The MIC5157BN is classified as an obsolete product, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

MIC5157BN

Microchip TechnologyIn Stock: 4299MIC5157BN Datasheet

Current PartRFQ

MIC5157YN

Microchip TechnologyIn Stock: 847MIC5157YN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC5157BN is determined by strict equivalence across the following critical parameters:

• Functional Type: Positive Fixed Linear Regulator Controller
• Output Configuration: Single output
• Supply Current: 4.5mA
• Input Voltage Range: 3V ~ 36V
• Operating Temperature Range: -40°C ~ 85°C
• Package Type: 14-DIP through-hole mounting
• Physical Dimensions: 0.300" (7.62mm) pitch

The MIC5157YN qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction between these parts is product status and compliance certification level.

Parameter Comparison

Engineering Selection Recommendations

The MIC5157YN is the direct functional equivalent to the MIC5157BN. Both devices share identical electrical characteristics, pin configuration, and package specifications, enabling direct substitution at the component level.

The MIC5157YN offers the advantage of active product status, ensuring continued manufacturer support and availability. Additionally, the MIC5157YN meets ROHS3 compliance requirements, whereas the MIC5157BN is RoHS non-compliant. For new designs or system updates requiring regulatory compliance with modern environmental standards, the MIC5157YN is the appropriate selection.

For legacy system maintenance where RoHS compliance is not a requirement, the MIC5157BN remains functionally suitable if inventory is available. However, procurement of the MIC5157YN is recommended for long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the MIC5157YN directly replace the MIC5157BN in existing designs?

A: Yes. The MIC5157YN is a direct pin-for-pin and functionally equivalent substitute. No circuit modifications or PCB layout changes are required. Both devices operate identically across the specified input voltage range, output configuration, and temperature range.

Q: What is the difference between the MIC5157BN and MIC5157YN?

A: The primary differences are product status and compliance certification. The MIC5157BN is obsolete and RoHS non-compliant. The MIC5157YN is an active product with ROHS3 compliance. Electrical performance and package specifications are identical.

Q: Why is the MIC5157BN classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. The MIC5157YN represents the current active equivalent from Microchip Technology.

Q: Are there packaging differences between these parts?

A: Both devices use 14-DIP through-hole packaging with 0.300" (7.62mm) pitch. The MIC5157YN is supplied in tube packaging, while the MIC5157BN packaging format is not specified. This does not affect electrical compatibility or board-level integration.

Q: What compliance certifications apply to each part?

A: The MIC5157BN is RoHS non-compliant. The MIC5157YN is ROHS3 compliant. Both are REACH Unaffected and classified under ECCN EAR99. Compliance requirements should be verified against your specific application and regional regulations.

Q: Is the MIC5157YN suitable for industrial temperature applications?

A: Yes. The MIC5157YN operates across the full industrial temperature range of -40°C to 85°C, identical to the MIC5157BN, making it suitable for industrial and extended-temperature applications.