LM3526M-H Equivalent & Substitute Parts

Part Overview

The LM3526M-H is a Power Switch/Driver IC manufactured by Texas Instruments, configured as a 1:2 P-Channel USB Switch with 500mA output current capability in an 8-SOIC package. This part is classified as Obsolete, which necessitates identification of equivalent and substitute components for new designs or production continuity. The device provides high-side P-channel switching with integrated status flag, current limiting, over-temperature protection, and UVLO (Under-Voltage Lock-Out) functionality, operating across a 2.7V to 5.5V load voltage range and -40°C to 125°C junction temperature range.

Substiute Parts

LM3526M-H

Texas InstrumentsIn Stock: 2577LM3526M-H Datasheet

Current PartRFQ

LM3526M-H/NOPB

Texas InstrumentsIn Stock: 16211LM3526M-H/NOPB Datasheet

DirectRFQ

LM3526MX-H/NOPB

Texas InstrumentsIn Stock: 35834LM3526MX-H/NOPB Datasheet

MFR RecommendedRFQ

LM3526M-L/NOPB

Texas InstrumentsIn Stock: 26857LM3526M-L/NOPB Datasheet

Parametric EquivalentRFQ

AP2146SG-13

Diodes IncorporatedIn Stock: 4684AP2146SG-13 Datasheet

MFR RecommendedRFQ

AP2156SG-13

Diodes IncorporatedIn Stock: 12914AP2156SG-13 Datasheet

MFR RecommendedRFQ

AP2166SG-13

Diodes IncorporatedIn Stock: 18760AP2166SG-13 Datasheet

MFR RecommendedRFQ

AP2176SG-13

Diodes IncorporatedIn Stock: 146262AP2176SG-13 Datasheet

MFR RecommendedRFQ

AP2186MPG-13

Diodes IncorporatedIn Stock: 8002AP2186MPG-13 Datasheet

MFR RecommendedRFQ

AP2186SG-13

Diodes IncorporatedIn Stock: 5308AP2186SG-13 Datasheet

MFR RecommendedRFQ

AP2196MPG-13

Diodes IncorporatedIn Stock: 2918AP2196MPG-13 Datasheet

MFR RecommendedRFQ

AP2196SG-13

Diodes IncorporatedIn Stock: 3467AP2196SG-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM3526M-H is determined by strict equivalence across the following critical parameters:

• Switch Type: USB Switch
• Output Configuration: High Side, P-Channel
• Number of Outputs: 2
• Ratio (Input:Output): 1:2
• Voltage - Load: 2.7V ~ 5.5V
• Output Type: P-Channel
• Interface: On/Off
• Input Type: Non-Inverting
• Features: Status Flag
• Fault Protection: Current Limiting (Fixed), Over Temperature, UVLO
• RoHS Status: ROHS3 Compliant
• Mounting Type: Surface Mount

Substitute parts are grouped into three categories:

Category 1: Direct Texas Instruments Equivalents — Parts with identical electrical specifications and packaging, differing only in product status (Active vs. Obsolete) or packaging format (Tube vs. Cut Tape/Digi-Reel).

Category 2: Diodes Incorporated Equivalents (500mA) — Parts with identical 500mA output current and all core electrical parameters, available in alternative package formats (8-SOP).

Category 3: Diodes Incorporated Higher-Current Alternatives (1A–1.5A) — Parts with enhanced output current capability (1A or 1.5A) and reduced Rds On (90mOhm), maintaining all other core electrical specifications and operating within the same voltage and temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Texas Instruments LM3526 Series)

LM3526M-H/NOPB, LM3526MX-H/NOPB, and LM3526M-L/NOPB are all Active-status Texas Instruments parts with identical electrical specifications to the obsolete LM3526M-H. These parts maintain the same 500mA output current, 100mOhm Rds On, and -40°C to 125°C junction temperature range. Selection between these variants depends on packaging requirements: LM3526M-H/NOPB and LM3526M-L/NOPB are supplied in Tube packaging, while LM3526MX-H/NOPB is available in Cut Tape and Digi-Reel format for higher-volume automated assembly. All three are ROHS3 compliant with MSL 1 rating.

Diodes Incorporated 500mA Equivalents (AP2146SG-13, AP2156SG-13)

AP2146SG-13 and AP2156SG-13 provide electrical equivalence to the LM3526M-H with identical 500mA output current and 100mOhm Rds On. Both are Active-status parts with ROHS3 compliance and MSL 1 rating. These parts operate within the same 2.7V to 5.5V load voltage range and include additional Reverse Current fault protection. Operating temperature is -40°C to 85°C (ambient), which is narrower than the LM3526M-H's -40°C to 125°C junction temperature specification. Package format differs: AP2146SG-13 is supplied in Tape & Reel, while AP2156SG-13 is available in Cut Tape & Digi-Reel format.

Diodes Incorporated 1A Alternatives (AP2166SG-13, AP2176SG-13)

AP2166SG-13 and AP2176SG-13 offer enhanced output current capability at 1A with maintained 100mOhm Rds On and identical voltage/temperature operating ranges (2.7V to 5.5V load, -40°C to 85°C ambient). Both are Active-status, ROHS3 compliant parts with MSL 1 rating and include Reverse Current protection. These parts are suitable for applications requiring higher current headroom while maintaining the same 1:2 switching topology and protection features. AP2166SG-13 is supplied in Tape & Reel; AP2176SG-13 is available in Tape & Reel with significantly higher inventory availability (146,211 pcs).

Diodes Incorporated 1.5A Higher-Performance Alternatives (AP2186SG-13, AP2186MPG-13, AP2196MPG-13)

AP2186SG-13, AP2186MPG-13, and AP2196MPG-13 provide the highest current capability at 1.5A with improved Rds On of 90mOhm (versus 100mOhm in the LM3526M-H). All three maintain the 2.7V to 5.5V load voltage range and -40°C to 85°C operating temperature. AP2186SG-13 is supplied in 8-SOP package format with Tape & Reel packaging. AP2186MPG-13 and AP2196MPG-13 are supplied in 8-MSOP-EP (Exposed Pad) format, offering improved thermal performance through the exposed pad. All three are Active-status, ROHS3 compliant with MSL 1 rating and include Reverse Current protection.

Frequently Asked Questions (FAQ)

Q: Can I directly replace LM3526M-H with LM3526M-H/NOPB?

A: Yes. LM3526M-H/NOPB is the Active-status equivalent with identical electrical specifications. The primary difference is product status (Active vs. Obsolete) and packaging format. Both are ROHS3 compliant with MSL 1 rating and operate across -40°C to 125°C junction temperature.

Q: What is the difference between LM3526MX-H/NOPB and LM3526M-H/NOPB?

A: Both parts have identical electrical specifications and operating ranges. The difference is packaging format: LM3526MX-H/NOPB is supplied in Cut Tape and Digi-Reel format for automated high-volume assembly, while LM3526M-H/NOPB is supplied in Tube format. Select based on your assembly process requirements.

Q: Can I use Diodes Incorporated AP2146SG-13 or AP2156SG-13 as a direct replacement?

A: Yes, with one consideration. Both parts maintain the same 500mA output current, 100mOhm Rds On, and 2.7V to 5.5V load voltage range. However, operating temperature is -40°C to 85°C (ambient) versus the LM3526M-H's -40°C to 125°C (junction). If your application operates above 85°C ambient, verify thermal performance. Both include additional Reverse Current protection not present in the LM3526M-H.

Q: What are the advantages of AP2166SG-13 or AP2176SG-13 over the LM3526M-H?

A: Both parts provide 1A output current (versus 500mA) with maintained 100mOhm Rds On, allowing higher current capacity in the same 1:2 switching topology. Operating voltage and temperature ranges remain identical (2.7V to 5.5V, -40°C to 85°C ambient). Both include Reverse Current protection. These parts are suitable if your application requires higher current headroom.

Q: What are the advantages of AP2186 or AP2196 series parts?

A: The AP2186 and AP2196 series offer 1.5A output current with improved Rds On of 90mOhm (versus 100mOhm). AP2186MPG-13 and AP2196MPG-13 include an exposed thermal pad for improved heat dissipation. All three maintain the 2.7V to 5.5V load voltage range and include Reverse Current protection. These parts are suitable for applications requiring higher current capacity and improved thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of the LM3526M-H.

Q: What package format should I select?

A: Package selection depends on your assembly process. For manual or low-volume assembly, Tube format (LM3526M-H/NOPB, LM3526M-L/NOPB) is standard. For automated high-volume assembly, Cut Tape & Digi-Reel format (LM3526MX-H/NOPB, AP2156SG-13, AP2176SG-13) is preferred. For thermal-sensitive applications, 8-MSOP-EP format (AP2186MPG-13, AP2196MPG-13) provides an exposed pad for improved heat dissipation.

Q: Can I use a higher-current part (1A or 1.5A) in place of the 500mA LM3526M-H?

A: Yes. Higher-current parts (AP2166SG-13, AP2176SG-13, AP2186 series) are backward-compatible with the LM3526M-H in terms of electrical interface and protection features. The increased current capability provides design margin and does not negatively impact applications designed for 500mA operation. Verify package compatibility with your PCB layout.