LM2575-5.0BN Equivalent & Substitute Parts

Part Overview

The LM2575-5.0BN is a buck switching regulator IC manufactured by Microchip Technology, designed for step-down voltage conversion with a fixed 5V output and 1A output current capability. The device operates across an input voltage range of 4V to 40V and features a 52kHz switching frequency in a 16-DIP through-hole package.

The LM2575-5.0BN is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance or redesigns requiring active component alternatives.

Substiute Parts

LM2575-5.0BN

Microchip TechnologyIn Stock: 772LM2575-5.0BN Datasheet

Current PartRFQ

LM2575-5.0YN

Microchip TechnologyIn Stock: 4339LM2575-5.0YN Datasheet

DirectRFQ

TL2575HV-05IN

Texas InstrumentsIn Stock: 1261TL2575HV-05IN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM2575-5.0BN are qualified based on the following criteria:

Electrical Compatibility:

• Identical output voltage: 5V fixed
• Identical output current rating: 1A
• Identical switching frequency: 52kHz
• Identical topology: Buck (step-down)
• Identical output configuration: Positive, single output
• Compatible input voltage range (minimum 4V, maximum ≥40V)
• Identical operating temperature range: -40°C ~ 125°C

Mechanical Compatibility:

• Identical package type: 16-DIP (0.300", 7.62mm)
• Through-hole mounting

Regulatory & Supply Status:

• Active product status preferred for long-term availability
• RoHS3 compliance preferred for modern supply chains

Parameter Comparison

Engineering Selection Recommendations

LM2575-5.0YN (Microchip Technology): This part is the direct equivalent from the same manufacturer. It maintains identical electrical specifications and package configuration as the LM2575-5.0BN. The LM2575-5.0YN is active in production and ROHS3 compliant, making it the preferred choice for applications requiring continuity with the original design. The primary difference is packaging format (tube vs. bulk) and improved RoHS compliance status.

TL2575HV-05IN (Texas Instruments): This part provides functional equivalence with identical output voltage, current, switching frequency, and operating temperature range. The TL2575HV-05IN offers an extended maximum input voltage rating of 60V compared to 40V for the LM2575-5.0BN, providing additional design margin for higher input voltage applications. This part is active in production and ROHS3 compliant. The minimum input voltage is 4.75V, which is compatible with the 4V minimum of the original part for most practical applications. MSL rating is not applicable, indicating superior moisture handling characteristics.

Frequently Asked Questions (FAQ)

Q: Can LM2575-5.0YN be used as a direct replacement for LM2575-5.0BN?

A: Yes. The LM2575-5.0YN is electrically and mechanically identical to the LM2575-5.0BN. Both devices share the same output voltage (5V), output current (1A), switching frequency (52kHz), input voltage range (4V to 40V), operating temperature range (-40°C to 125°C), and 16-DIP package. The primary difference is product status (active vs. obsolete) and RoHS compliance level.

Q: What are the key differences between LM2575-5.0YN and TL2575HV-05IN?

A: Both parts are functionally equivalent for the core specifications: 5V output, 1A current, 52kHz switching frequency, and 16-DIP package. The TL2575HV-05IN offers a higher maximum input voltage (60V vs. 40V) and does not have an MSL rating. The minimum input voltage for TL2575HV-05IN is 4.75V, which is 0.75V higher than the LM2575-5.0BN's 4V minimum. For applications operating below 4.75V input, the LM2575-5.0YN is required.

Q: Are there any package compatibility concerns?

A: No. All three parts use the identical 16-DIP (0.300", 7.62mm) through-hole package. Pin-to-pin compatibility is maintained, allowing direct PCB substitution without layout modifications.

Q: Which substitute part should be selected for new designs?

A: For new designs, either LM2575-5.0YN or TL2575HV-05IN is acceptable. Selection depends on input voltage requirements: use LM2575-5.0YN if input voltage may drop below 4.75V; use TL2575HV-05IN if higher input voltage margin (up to 60V) is beneficial. Both are active products with modern RoHS3 compliance.

Q: What is the impact of the MSL rating difference?

A: LM2575-5.0YN has MSL 3 (168 hours), requiring controlled moisture exposure during storage and handling. TL2575HV-05IN has no MSL rating, indicating it does not require special moisture control. For applications with extended storage or high-humidity environments, TL2575HV-05IN may offer handling advantages.