TPS2044BDR Equivalent & Substitute Parts

Part Overview

The TPS2044BDR is an N-Channel power switch driver IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This device functions as a 1:1 power switch/driver with 500mA output capability in a 16-SOIC surface mount package. The part is currently active in production with 2600 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for functionally compatible alternatives with different input/output ratios or interface characteristics.

Substiute Parts

TPS2044BDR

Texas InstrumentsIn Stock: 2621TPS2044BDR 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 compatibility for the TPS2044BDR is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Package Type: 16-SOIC form factor (physical and electrical pin compatibility)
• Output Configuration: High Side, N-Channel topology
• Voltage - Load: 2.7V ~ 5.5V operating range
• Current - Output (Max): 500mA minimum capability
• Fault Protection: Current Limiting, Over Temperature, UVLO protection
• Mounting Type: Surface Mount

Flexible Parameters (Allow Substitution):

• Input:Output Ratio (1:1 or 1:2 acceptable)
• Input Type (Inverting or Non-Inverting)
• Switch Type (General Purpose or USB Switch)
• Packaging Format (Cut Tape, Tape & Reel, or Tube)
• Rds On specification (70mOhm or 90mOhm acceptable within thermal limits)
• Operating Temperature range (extended ranges acceptable)

The substitute parts listed maintain electrical compatibility through identical package geometry, voltage specifications, current ratings, and protection features. Variations in input:output ratio and input type do not affect physical compatibility but may require circuit design verification.

Parameter Comparison

Engineering Selection Recommendations

TPS2044BDRG4: Parametric equivalent with identical electrical specifications (1:1 ratio, 70mOhm Rds On, Inverting input). Differs only in packaging format (Tape & Reel). Product status is discontinued at DiGi Electronics; use only if existing inventory is available and long-term supply is not required. ROHS3 compliant.

TPS2054BDR: Parametric equivalent with identical electrical specifications (1:1 ratio, 70mOhm Rds On) but features Non-Inverting input type instead of Inverting. Requires circuit design verification to confirm input logic compatibility. Currently active with highest inventory availability (15582 units). ROHS3 compliant. Recommended for new designs requiring Non-Inverting input topology.

LM3544M-L/NOPB: Manufacturer-recommended substitute with different input:output ratio (1:2 instead of 1:1) and Non-Inverting input type. Includes Status Flag feature. Higher Rds On specification (90mOhm). Extended operating temperature range to 125°C (TJ). Packaged in Tube format. ROHS3 compliant. Suitable for applications where 1:2 switching topology and status monitoring are acceptable.

LM3544MX-L/NOPB: Manufacturer-recommended substitute with identical characteristics to LM3544M-L/NOPB except packaged in Tape & Reel format with standard operating temperature range (-40°C ~ 85°C TA). Highest inventory availability among LM3544 variants (5130 units). ROHS3 compliant. Preferred for high-volume manufacturing requiring Tape & Reel packaging.

All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status. Selection should prioritize product status (Active preferred), packaging format requirements for manufacturing processes, and circuit-level compatibility with input type and switching ratio specifications.

Frequently Asked Questions (FAQ)

Q: Can TPS2054BDR replace TPS2044BDR directly in the circuit?

A: Physical and electrical compatibility is confirmed through identical package geometry (16-SOIC), voltage specifications (2.7V ~ 5.5V), current ratings (500mA), and protection features. The primary difference is input type: TPS2054BDR uses Non-Inverting logic while TPS2044BDR uses Inverting logic. Circuit design verification is required to confirm input signal compatibility.

Q: What is the difference between 1:1 and 1:2 input:output ratio?

A: The ratio describes the switching configuration. TPS2044BDR (1:1) has one input controlling one output per channel pair. LM3544 variants (1:2) have one input controlling two outputs. This affects circuit topology and control logic. Substitution requires design review to confirm functional compatibility.

Q: Are LM3544 parts suitable replacements for TPS2044BDR?

A: LM3544M-L/NOPB and LM3544MX-L/NOPB are manufacturer-recommended substitutes with compatible package, voltage, current, and protection specifications. Differences include 1:2 switching ratio, Non-Inverting input type, higher Rds On (90mOhm vs 70mOhm), and Status Flag feature. These differences require circuit design verification before implementation.

Q: What packaging formats are available?

A: TPS2044BDR is supplied in Cut Tape (CT) & Digi-Reel® format. Alternatives include Tape & Reel (TPS2044BDRG4, LM3544MX-L/NOPB) and Tube (LM3544M-L/NOPB). Packaging selection depends on manufacturing process requirements and volume specifications.

Q: Is TPS2044BDRG4 still available?

A: TPS2044BDRG4 is discontinued at DiGi Electronics with 3469 units in current inventory. Use only if existing stock is available and long-term supply continuity is not required. For new designs, select from active products: TPS2054BDR, LM3544M-L/NOPB, or LM3544MX-L/NOPB.

Q: What is the significance of the Status Flag feature in LM3544 parts?

A: The Status Flag provides output status monitoring capability not present in TPS2044BDR. This feature is available only in LM3544 variants and requires circuit design consideration if status feedback is required for system operation.

Q: Do all parts meet the same compliance standards?

A: All listed parts are ROHS3 compliant, MSL Level 1 (Unlimited), and REACH Unaffected. All are classified under ECCN EAR99 and HTSUS 8542.39.0001. Compliance status is equivalent across all substitute options.