AP1212HSL-U Equivalent & Substitute Parts

Part Overview

The AP1212HSL-U is a Power Management IC (PMIC) manufactured by Diodes Incorporated, functioning as a USB Switch with 1:2 output configuration and N-Channel high-side switching capability. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates across a 2.7V to 5.5V load voltage range with 500mA maximum output current per channel and includes integrated current limiting, over-temperature protection, and UVLO (Under-Voltage Lock-Out) fault protection.

Substiute Parts

AP1212HSL-U

Diodes IncorporatedIn Stock: 912AP1212HSL-U Datasheet

Current PartRFQ

LM3526M-H/NOPB

Texas InstrumentsIn Stock: 16211LM3526M-H/NOPB Datasheet

MFR RecommendedRFQ

LM3526MX-H/NOPB

Texas InstrumentsIn Stock: 35834LM3526MX-H/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP1212HSL-U is based on functional equivalence across the following critical parameters:

• Switch Configuration: 1:2 input-to-output ratio with dual-channel high-side switching
• Electrical Performance: 500mA maximum output current, 2.7V to 5.5V load voltage range
• Protection Features: Current limiting, over-temperature protection, and UVLO
• Interface Type: Non-inverting on/off control with status flag output
• Package Compatibility: 8-SOIC form factor with identical 0.154" (3.90mm) width
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The substitute parts identified (LM3526M-H/NOPB and LM3526MX-H/NOPB) from Texas Instruments maintain functional equivalence through matching electrical specifications and package geometry. The primary distinction is the output channel type (P-Channel vs. N-Channel), which represents a functional alternative within the same application class rather than a direct pin-for-pin replacement.

Parameter Comparison

Engineering Selection Recommendations

Both LM3526M-H/NOPB and LM3526MX-H/NOPB from Texas Instruments are active, production-status alternatives to the obsolete AP1212HSL-U. Selection between these two Texas Instruments variants depends on packaging and supply requirements:

• LM3526M-H/NOPB: Supplied in Tube packaging with 16,142 units in stock
• LM3526MX-H/NOPB: Supplied in Cut Tape (CT) & Digi-Reel® packaging with 35,800 units in stock

Both parts maintain ROHS3 compliance, MSL Level 1 rating, and identical electrical specifications. The LM3526MX-H/NOPB variant offers superior availability and is suitable for high-volume production environments. The LM3526M-H/NOPB variant accommodates lower-volume or prototype applications.

The primary design consideration is the channel type transition from N-Channel (AP1212HSL-U) to P-Channel (LM3526 series). This requires circuit topology evaluation to confirm functional compatibility within the target application.

Frequently Asked Questions (FAQ)

Q: Can LM3526M-H/NOPB and LM3526MX-H/NOPB be used interchangeably?

A: Yes. Both parts are electrically identical and use the same 8-SOIC package. The difference is packaging format: LM3526M-H/NOPB uses Tube packaging, while LM3526MX-H/NOPB uses Cut Tape & Digi-Reel® packaging. Selection depends on procurement and assembly workflow requirements.

Q: What is the impact of switching from N-Channel to P-Channel output?

A: The output channel type affects circuit topology and gate drive requirements. N-Channel (AP1212HSL-U) and P-Channel (LM3526 series) configurations require different biasing and control signal levels. Circuit redesign and functional testing are necessary to confirm compatibility with the target application.

Q: Are the substitute parts pin-compatible with AP1212HSL-U?

A: Both substitute parts use the 8-SOIC package with identical physical dimensions (0.154" width, 3.90mm). Pin-level compatibility depends on the specific pinout of each device. Datasheet comparison is required to confirm signal mapping before PCB layout or assembly.

Q: What is the significance of the Rds On difference (110mOhm vs. 100mOhm)?

A: The LM3526 series exhibits 10mOhm lower on-resistance compared to the AP1212HSL-U, resulting in reduced power dissipation and improved thermal performance. This represents a performance improvement for equivalent current-carrying applications.

Q: Are all three parts ROHS3 compliant?

A: Yes. AP1212HSL-U, LM3526M-H/NOPB, and LM3526MX-H/NOPB are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, suitable for standard manufacturing and storage conditions.