TPS2012DG4 Equivalent & Substitute Parts

Part Overview

The TPS2012DG4 is a Power Management Integrated Circuit (PMIC) functioning as a general-purpose N-channel power switch with 1:1 input-to-output ratio and high-side output configuration. This device is rated for 1A maximum output current and operates across a 2.7V to 5.5V load voltage range with integrated current limiting and over-temperature fault protection.

The TPS2012DG4 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and component procurement.

Substiute Parts

TPS2012DG4

Texas InstrumentsIn Stock: 976TPS2012DG4 Datasheet

Current PartRFQ

TPS2012AD

Texas InstrumentsIn Stock: 2437TPS2012AD Datasheet

MFR RecommendedRFQ

TPS2012D

Texas InstrumentsIn Stock: 973TPS2012D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS2012DG4 is determined by strict equivalence across the following critical parameters:

• Functional Architecture: General-purpose N-channel power switch with 1:1 input-to-output ratio and high-side output configuration
• Electrical Ratings: 1A maximum output current, 2.7V to 5.5V load voltage range, non-inverting on/off interface
• Fault Protection: Current limiting and over-temperature protection
• Package Compatibility: 8-SOIC surface-mount package with identical physical dimensions (0.154", 3.90mm width)
• Compliance: ROHS3 compliance, MSL 1 rating, and REACH unaffected status

The substitute parts identified—TPS2012AD and TPS2012D—share the same base product number (TPS2012) and maintain electrical and mechanical compatibility within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

TPS2012AD is the primary recommended substitute for the TPS2012DG4. This part maintains full electrical and mechanical compatibility while offering enhanced fault protection through integrated Under-Voltage Lockout (UVLO) functionality. The TPS2012AD carries Active product status, ensuring ongoing manufacturer support and availability. The reduced on-resistance specification (33mOhm versus 75mOhm) provides improved thermal performance and lower power dissipation in switching applications. ROHS3 compliance and MSL 1 rating are maintained.

TPS2012D is an alternative substitute that maintains identical electrical specifications and package compatibility with the TPS2012DG4. However, this part carries a "Not For New Designs" product status designation, limiting its suitability for new development efforts. The TPS2012D is appropriate only for legacy system maintenance or replacement scenarios where design continuity is required.

Frequently Asked Questions (FAQ)

Q: Can TPS2012AD directly replace TPS2012DG4 in existing designs?

A: Yes. The TPS2012AD maintains identical package geometry (8-SOIC), electrical ratings (1A output, 2.7V–5.5V load voltage), and fault protection architecture. The addition of UVLO protection in the TPS2012AD provides enhanced circuit reliability without requiring design modification.

Q: What is the significance of the reduced Rds On specification in TPS2012AD?

A: The TPS2012AD specifies 33mOhm typical on-resistance compared to 75mOhm in the TPS2012DG4. This lower resistance reduces conduction losses and heat generation during switch operation, improving overall power efficiency. This represents a performance enhancement rather than a compatibility limitation.

Q: Why is TPS2012D marked "Not For New Designs"?

A: The "Not For New Designs" status indicates that Texas Instruments has designated this part for legacy support only. While electrically compatible with the TPS2012DG4, new circuit designs should prioritize the TPS2012AD, which carries Active product status and ensures long-term availability and manufacturer support.

Q: Are all three parts (TPS2012DG4, TPS2012AD, TPS2012D) pin-compatible?

A: Yes. All three parts share the 8-SOIC package with identical pin assignments, allowing direct PCB-level substitution without layout modification.

Q: What compliance certifications apply to these substitute parts?

A: Both TPS2012AD and TPS2012D maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and REACH unaffected status, matching the compliance profile of the discontinued TPS2012DG4.