TPS2044DR Equivalent & Substitute Parts

Part Overview

The TPS2044DR is an N-Channel power switch/driver IC manufactured by Texas Instruments, designed for general-purpose switching applications. This 16-SOIC surface-mount device provides 1:1 input-to-output ratio configuration with 500mA maximum output current and operates across a 2.7V to 5.5V load voltage range. The device is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are necessary when the TPS2044DR becomes unavailable, when alternative packaging formats are required, or when specific feature sets such as status flag outputs are needed for system integration.

Substiute Parts

TPS2044DR

Texas InstrumentsIn Stock: 9487TPS2044DR Datasheet

Current PartRFQ

LM3544M-L/NOPB

Texas InstrumentsIn Stock: 1628LM3544M-L/NOPB Datasheet

MFR RecommendedRFQ

LM3544MX-L/NOPB

Texas InstrumentsIn Stock: 5159LM3544MX-L/NOPB Datasheet

MFR RecommendedRFQ

TPS2044BDRG4

Texas InstrumentsIn Stock: 3533TPS2044BDRG4 Datasheet

Parametric EquivalentRFQ

TPS2054BDR

Texas InstrumentsIn Stock: 15630TPS2054BDR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS2044DR is determined by the following critical parameters: package type (16-SOIC form factor), output type (N-Channel), number of outputs (4), output configuration (High Side), load voltage range (2.7V ~ 5.5V), maximum output current (500mA), fault protection features (Current Limiting, Over Temperature, UVLO), and surface-mount mounting type. Parts meeting these core requirements are classified as parametric equivalents or functional alternatives. The LM3544 series represents a functional alternative with modified input-to-output ratio (1:2) and non-inverting input type, suitable for applications where status flag output is required. The TPS2044BDRG4 and TPS2054BDR represent parametric equivalents with identical electrical specifications and package format, differing only in on-resistance characteristics and input logic type.

Parameter Comparison

Engineering Selection Recommendations

For direct pin-compatible replacement with identical electrical performance, TPS2054BDR is the primary selection. This part maintains active product status, offers improved on-resistance (70mOhm vs. 80mOhm), and is available in high inventory quantities. The primary difference is non-inverting input logic, which requires circuit-level evaluation for compatibility with existing control signals.

TPS2044BDRG4 provides parametric equivalence with superior on-resistance characteristics (70mOhm) but carries discontinued status at DiGi Electronics, limiting long-term availability for new designs.

LM3544MX-L/NOPB and LM3544M-L/NOPB are functional alternatives suitable when status flag output capability is required. These parts feature 1:2 input-to-output ratio and non-inverting input logic. LM3544MX-L/NOPB is supplied in Tape & Reel packaging with -40°C to 85°C operating range, while LM3544M-L/NOPB is supplied in Tube packaging with extended temperature range to 125°C (TJ).

All substitute parts maintain RoHS3 compliance, unlimited moisture sensitivity rating, and identical package footprint (16-SOIC). Selection should prioritize active product status and packaging format requirements for production applications.

Frequently Asked Questions (FAQ)

Q: Can TPS2054BDR replace TPS2044DR in existing designs without circuit modification?

A: TPS2054BDR is pin-compatible and maintains identical electrical specifications. However, the input logic type differs (non-inverting vs. inverting). Circuit-level evaluation is required to confirm control signal compatibility. On-resistance is improved (70mOhm vs. 80mOhm), which reduces power dissipation.

Q: What is the difference between LM3544M-L/NOPB and LM3544MX-L/NOPB?

A: Both parts are functionally identical with 1:2 input-to-output ratio and status flag output. The primary differences are packaging format (Tube vs. Tape & Reel) and operating temperature range (TJ -40°C to 125°C vs. TA -40°C to 85°C). Selection depends on assembly process requirements and thermal environment specifications.

Q: Why does TPS2044BDRG4 show discontinued status?

A: TPS2044BDRG4 is discontinued at DiGi Electronics but remains available through inventory. For new production designs, TPS2054BDR is recommended as the active alternative with superior on-resistance and confirmed long-term availability.

Q: Are all substitute parts available in the same 16-SOIC package?

A: Yes. All listed substitute parts use identical 16-SOIC (0.154", 3.90mm Width) package format, ensuring PCB footprint compatibility. Packaging format (Tape & Reel, Tube, or Cut Tape) differs by supplier and application requirements but does not affect electrical performance or physical dimensions.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: 16-SOIC package format, N-Channel output type, 4 outputs, High Side output configuration, 2.7V to 5.5V load voltage range, 500mA maximum output current, and identical fault protection features (Current Limiting, Over Temperature, UVLO). Input logic type (inverting vs. non-inverting) and input-to-output ratio (1:1 vs. 1:2) are secondary parameters requiring circuit-level evaluation.