LM2586T-3.3 Equivalent & Substitute Parts

Part Overview

The LM2586T-3.3 is a boost, flyback, and forward converter switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed to deliver a fixed 3.3V output at 3A (switch current) from input voltages ranging from 4V to 40V. The device operates at a switching frequency of 100kHz to 200kHz and is housed in a TO-220-7 formed leads package for through-hole mounting.

The LM2586T-3.3 carries an obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and current compliance certifications.

Substiute Parts

LM2586T-3.3

Texas InstrumentsIn Stock: 793LM2586T-3.3 Datasheet

Current PartRFQ

LM2586T-3.3/NOPB

Texas InstrumentsIn Stock: 917LM2586T-3.3/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2586T-3.3 is determined by strict equivalence across the following critical parameters:

• Input voltage range: 4V to 40V
• Fixed output voltage: 3.3V
• Output current capability: 3A (switch)
• Switching frequency: 100kHz to 200kHz
• Topology support: Boost, Flyback, Forward Converter
• Package: TO-220-7 Formed Leads
• Mounting: Through Hole

The LM2586T-3.3/NOPB is identified as a direct substitute based on identical electrical specifications, identical package configuration, and identical thermal operating range. The primary distinction is product status and compliance certification level.

Parameter Comparison

Engineering Selection Recommendations

The LM2586T-3.3/NOPB is the direct equivalent substitute for the LM2586T-3.3. Both devices are manufactured by Texas Instruments and share identical electrical and thermal specifications across all critical parameters.

The LM2586T-3.3/NOPB is preferred for new designs and ongoing production due to its active product status and ROHS3 compliance certification. The obsolete status of the LM2586T-3.3 indicates that Texas Instruments no longer manufactures this variant, making the LM2586T-3.3/NOPB the appropriate selection for supply chain continuity.

Both devices are functionally interchangeable at the circuit level. PCB layout, thermal management, and external component selection remain unchanged between the two part numbers.

Frequently Asked Questions (FAQ)

Q: Can the LM2586T-3.3/NOPB be used as a direct replacement for the LM2586T-3.3?

A: Yes. The LM2586T-3.3/NOPB is a direct equivalent substitute. All electrical specifications, output voltage, current rating, switching frequency, operating temperature range, and package configuration are identical. The devices are pin-compatible and functionally interchangeable.

Q: What is the difference between LM2586T-3.3 and LM2586T-3.3/NOPB?

A: The primary differences are product status and compliance certification. The LM2586T-3.3 is obsolete and RoHS non-compliant. The LM2586T-3.3/NOPB is active production and ROHS3 compliant. The "/NOPB" suffix indicates lead-free plating. Electrical performance and package form factor are identical.

Q: Are there any circuit design changes required when switching from LM2586T-3.3 to LM2586T-3.3/NOPB?

A: No circuit design changes are required. Both devices operate at identical input and output voltage ranges, deliver the same output current, and operate at the same switching frequency. External component selection, PCB layout, and thermal design remain unchanged.

Q: What packaging is available for the LM2586T-3.3/NOPB?

A: The LM2586T-3.3/NOPB is supplied in Tube packaging. Both the LM2586T-3.3 and LM2586T-3.3/NOPB use the TO-220-7 formed leads package for through-hole mounting.

Q: Is the LM2586T-3.3/NOPB suitable for applications requiring RoHS compliance?

A: Yes. The LM2586T-3.3/NOPB carries ROHS3 compliance certification, making it suitable for applications and markets requiring RoHS compliance. The obsolete LM2586T-3.3 does not meet RoHS requirements.