LM3525M-H Power Switch IC Equivalent & Substitute Parts

Part Overview

The LM3525M-H is a Power Management IC (PMIC) classified as a Power Switch/Driver with P-Channel output configuration. This 8-SOIC surface mount device functions as a USB Switch with 1:1 input-to-output ratio, delivering up to 500mA at load voltages between 2.7V and 5.5V. The device features integrated status flag output, current limiting protection, over-temperature protection, and UVLO (Under-Voltage Lock-Out) fault protection.

The LM3525M-H carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this power switching topology.

Substiute Parts

LM3525M-H

Texas InstrumentsIn Stock: 1273LM3525M-H Datasheet

Current PartRFQ

LM3525M-H/NOPB

Texas InstrumentsIn Stock: 1404LM3525M-H/NOPB Datasheet

DirectRFQ

LM3525MX-H/NOPB

Texas InstrumentsIn Stock: 27276LM3525MX-H/NOPB Datasheet

MFR RecommendedRFQ

LM3525M-L

Texas InstrumentsIn Stock: 2540LM3525M-L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM3525M-H is determined by strict equivalence across the following critical parameters:

• Switch Type: USB Switch
• Output Type: P-Channel
• Output Configuration: High Side
• Number of Outputs: 1
• Ratio - Input:Output: 1:1
• Current - Output (Max): 500mA
• Voltage - Load: 2.7V ~ 5.5V
• Rds On (Typ): 80mOhm
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Fault Protection: Current Limiting (Fixed), Over Temperature, UVLO
• Features: Status Flag
• Interface: On/Off
• Input Type: Non-Inverting

All identified substitute parts maintain identical electrical specifications and mechanical compatibility. Differences exist only in product status, packaging format, and availability.

Parameter Comparison

Engineering Selection Recommendations

LM3525M-H/NOPB is the direct equivalent with Active product status. This part carries the "/NOPB" designation indicating lead-free plating and is packaged in Tube format. Selection of this part ensures continued access to an actively supported variant with identical electrical and mechanical specifications.

LM3525MX-H/NOPB is the manufacturer-recommended substitute. This variant maintains Active product status and is supplied in Cut Tape (CT) and Digi-Reel® packaging formats. Significantly higher inventory availability (27200 pcs) supports high-volume production requirements. The "MX" designation indicates this is the preferred production variant.

LM3525M-L is a parametric equivalent with Obsolete product status. While electrically and mechanically identical to the LM3525M-H, its obsolete classification limits its suitability for new designs or long-term supply chain planning.

For new designs and ongoing production, LM3525MX-H/NOPB is the optimal selection due to Active product status, superior inventory availability, and manufacturer recommendation. For existing designs currently using LM3525M-H, LM3525M-H/NOPB provides direct compatibility with Active product support.

Frequently Asked Questions (FAQ)

Q: Can LM3525M-H/NOPB be used as a direct replacement for LM3525M-H?

A: Yes. Both parts are electrically and mechanically identical. The "/NOPB" designation indicates lead-free plating compliance. Packaging differs (Tube vs. unspecified), but pin configuration, electrical performance, and thermal characteristics are equivalent.

Q: What is the difference between LM3525MX-H/NOPB and LM3525M-H/NOPB?

A: The "MX" designation indicates the preferred production variant. Both maintain identical electrical specifications, operating temperature range, and package dimensions. The primary distinction is packaging format (Cut Tape & Digi-Reel® vs. Tube) and significantly higher inventory availability for the MX variant.

Q: Why is LM3525M-L listed as a substitute if it is Obsolete?

A: LM3525M-L meets all electrical and mechanical substitution criteria. However, its Obsolete status makes it unsuitable for new designs or long-term supply commitments. It is listed for reference only in applications where existing inventory exists.

Q: Are all substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pin configuration. No PCB layout modifications are required for substitution.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 Compliant, REACH Unaffected, and carry MSL Rating 1 (Unlimited). ECCN classification is EAR99 for all variants.

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

A: LM3525MX-H/NOPB is the recommended selection. It carries Active product status, is the manufacturer-preferred variant, and maintains the highest inventory availability to support production continuity.