AP1212LSG-13 Equivalent & Substitute Parts

Part Overview

The AP1212LSG-13 is a Power Switch/Driver IC manufactured by Diodes Incorporated, designed for 1:2 N-Channel high-side switching applications with 500mA output capability. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a 2.7V to 5.5V load voltage range and includes integrated current limiting, over-temperature protection, and UVLO fault protection suitable for USB switching applications.

Substiute Parts

AP1212LSG-13

Diodes IncorporatedIn Stock: 2808AP1212LSG-13 Datasheet

Current PartRFQ

AP2146SG-13

Diodes IncorporatedIn Stock: 4684AP2146SG-13 Datasheet

MFR RecommendedRFQ

AP1212LSG-13

Diodes IncorporatedIn Stock: 2808AP1212LSG-13 Datasheet

Parametric EquivalentRFQ

LM3526M-L/NOPB

Texas InstrumentsIn Stock: 26857LM3526M-L/NOPB Datasheet

MFR RecommendedRFQ

LM3526MX-L/NOPB

Texas InstrumentsIn Stock: 42993LM3526MX-L/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP1212LSG-13 is determined by the following critical parameters: 1:2 input-to-output ratio, high-side output configuration, 500mA maximum output current, 2.7V to 5.5V load voltage range, 8-SOIC package compatibility, and USB switching functionality. The substitute parts maintain these core electrical and mechanical specifications while offering improved product status and availability.

The AP2146SG-13 (Diodes Incorporated) provides a direct functional equivalent with P-Channel output topology and active product status. The LM3526M-L/NOPB and LM3526MX-L/NOPB (Texas Instruments) offer identical electrical performance with extended temperature operating range and unlimited moisture sensitivity rating, available in standard tube and cut tape packaging respectively.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production transitions from the obsolete AP1212LSG-13, the LM3526M-L/NOPB and LM3526MX-L/NOPB (Texas Instruments) are preferred selections due to active product status, extended operating temperature range to 125°C, and unlimited moisture sensitivity rating. Both parts maintain full electrical equivalence with improved on-resistance (100mOhm vs. 110mOhm) and comprehensive fault protection including reverse current detection.

The AP2146SG-13 (Diodes Incorporated) offers an alternative from the same manufacturer with active product status and enhanced reverse current protection. This part operates to 85°C maximum junction temperature and carries unlimited MSL rating. Selection between AP2146SG-13 and the Texas Instruments alternatives depends on thermal environment requirements and supply chain preferences.

All substitute parts maintain ROHS3 compliance, identical package geometry, and equivalent electrical performance across the specified 2.7V to 5.5V load voltage range and 500mA output current specification.

Frequently Asked Questions (FAQ)

Q: Can the AP1212LSG-13 be directly replaced with AP2146SG-13?

A: Both parts share identical electrical specifications (1:2 ratio, 500mA output, 2.7V-5.5V load voltage, 8-SOIC package). The primary difference is output channel type (N-Channel vs. P-Channel) and operating temperature range (125°C vs. 85°C). Circuit topology must accommodate the channel type difference.

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

A: Both parts are electrically identical with identical electrical specifications. The difference is packaging format: LM3526M-L/NOPB is supplied in tube packaging, while LM3526MX-L/NOPB is supplied in cut tape and Digi-Reel format. Select based on assembly process requirements.

Q: Why do the Texas Instruments parts have lower on-resistance?

A: The LM3526 series specifies 100mOhm typical on-resistance compared to 110mOhm for the AP1212LSG-13. This represents improved performance and lower power dissipation in switching applications.

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What is the significance of MSL rating differences?

A: The AP1212LSG-13 carries MSL 3 (168 hours), requiring controlled moisture exposure during storage and assembly. Substitute parts carry MSL 1 (unlimited), eliminating moisture sensitivity constraints and reducing storage and handling requirements.

Q: Which substitute part has the widest operating temperature range?

A: Both LM3526M-L/NOPB and LM3526MX-L/NOPB operate from -40°C to 125°C (TJ), matching the AP1212LSG-13 temperature range. The AP2146SG-13 operates to 85°C maximum, suitable for standard industrial applications but not extended temperature environments.