LM5025ASD Equivalent & Substitute Parts

Part Overview

The LM5025ASD is a forward converter regulator controller IC manufactured by Texas Instruments, designed for positive, isolation-capable output step-up/step-down DC-DC applications. This 16-WSON surface mount device integrates transistor driver output with comprehensive control features including dead time control, frequency control, ramp, and soft start functionality.

The LM5025ASD carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications utilizing this controller topology.

Substiute Parts

LM5025ASD

Texas InstrumentsIn Stock: 8416LM5025ASD Datasheet

Current PartRFQ

LM5025ASD/NOPB

Texas InstrumentsIn Stock: 2338LM5025ASD/NOPB Datasheet

Parametric EquivalentRFQ

LM5025ASDX/NOPB

Texas InstrumentsIn Stock: 5746LM5025ASDX/NOPB Datasheet

Parametric EquivalentRFQ

LM5025SD/NOPB

Texas InstrumentsIn Stock: 2249LM5025SD/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM5025ASD is determined by strict equivalence across electrical and mechanical parameters. All substitute parts maintain identical specifications for:

• Output type and function (transistor driver, step-up/step-down)
• Output configuration (positive, isolation capable)
• Topology (forward converter)
• Number of outputs and phases (2 outputs, 1 phase)
• Supply voltage range (8V ~ 15V)
• Switching frequency range (200kHz ~ 580kHz)
• Duty cycle maximum (80%)
• Control features (dead time control, frequency control, ramp, soft start)
• Operating temperature range (-40°C ~ 125°C)
• Package and mounting specifications (16-WFDFN exposed pad, 16-WSON 5x5, surface mount)
• Moisture sensitivity level (MSL 1)

The substitute parts differ only in product status, RoHS compliance level, and packaging format (tape & reel), with no impact on functional or electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production continuity, LM5025ASDX/NOPB is the primary selection due to active product status and ROHS3 compliance. This part number ensures long-term availability and meets current environmental regulations.

LM5025ASD/NOPB serves as a secondary option with last time buy status and equivalent ROHS3 compliance, suitable for near-term procurement when LM5025ASDX/NOPB availability is constrained.

LM5025SD/NOPB provides an alternative with active status and ROHS3 compliance, maintaining full electrical and mechanical equivalence across all specified parameters.

The original LM5025ASD (obsolete, RoHS non-compliant) should be replaced in active designs. Direct pin-for-pin and functional substitution is supported by all listed alternatives without circuit modification.

Frequently Asked Questions (FAQ)

Q: Are all listed parts electrically equivalent to the LM5025ASD?

A: Yes. LM5025ASD/NOPB, LM5025ASDX/NOPB, and LM5025SD/NOPB maintain identical electrical specifications including output type, function, topology, supply voltage range, switching frequency, duty cycle, control features, and operating temperature range.

Q: What is the difference between LM5025ASDX/NOPB and LM5025ASD/NOPB?

A: Both parts are electrically and mechanically equivalent. LM5025ASDX/NOPB carries active product status with higher inventory availability, while LM5025ASD/NOPB is designated last time buy. Both are ROHS3 compliant and supplied in tape & reel packaging.

Q: Can LM5025SD/NOPB replace LM5025ASD in existing designs?

A: Yes. LM5025SD/NOPB is a direct substitute with identical package, pin configuration, and electrical specifications. No circuit modifications are required.

Q: Why is the original LM5025ASD marked obsolete?

A: The LM5025ASD has reached end-of-life status. Active alternatives with improved compliance certifications are available as direct replacements.

Q: Are there packaging differences between substitute parts?

A: All substitute parts use identical 16-WFDFN exposed pad packaging (16-WSON 5x5 surface mount). The primary difference is supply format: tape & reel packaging for all listed substitutes.

Q: Do all parts meet current RoHS requirements?

A: LM5025ASD/NOPB, LM5025ASDX/NOPB, and LM5025SD/NOPB are ROHS3 compliant. The original LM5025ASD is RoHS non-compliant and should not be used in new designs subject to RoHS regulations.