LM5041AMTCX Equivalent & Substitute Parts

Part Overview

The LM5041AMTCX is a half-bridge, push-pull regulator controller IC manufactured by Texas Instruments, designed for positive output step-up/step-down DC-DC conversion applications. This device operates as a transistor driver with integrated control features including dead time control, frequency control, and soft start functionality. The main part number LM5041AMTCX is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Function	Step-Up/Step-Down DC-DC Controller
Topology	Half-Bridge, Push-Pull
Output Type	Transistor Driver
Output Configuration	Positive
Number of Outputs	1
Output Phases	1
Voltage - Supply (Vcc/Vdd)	15V ~ 90V
Frequency - Switching	200kHz, 600kHz
Synchronous Rectifier	Yes
Clock Sync	Yes
Control Features	Dead Time Control, Frequency Control, Soft Start
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	16-TSSOP (0.173", 4.40mm Width)

Substitute Part Grouping Explanation

Substitution of the LM5041AMTCX is determined by strict equivalence across the following critical parameters:

Topology & Function: Half-bridge, push-pull regulator controller with step-up/step-down capability
Output Configuration: Positive output with single phase, single output
Electrical Specifications: Supply voltage range 15V ~ 90V, switching frequency options 200kHz and 600kHz
Control Architecture: Integrated dead time control, frequency control, and soft start
Package: 16-TSSOP surface mount package with identical physical dimensions
Synchronous Rectifier & Clock Sync: Both features present in all equivalent parts

All substitute parts maintain identical electrical and mechanical specifications. Differences exist only in product status (active vs. obsolete) and RoHS compliance certification.

Parameter Comparison

Parameter	LM5041AMTCX	LM5041AMTCX/NOPB	LM5041BMTCX/NOPB	LM5041MTCX/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Function	Step-Up/Step-Down	Step-Up/Step-Down	Step-Up/Step-Down	Step-Up/Step-Down
Topology	Half-Bridge, Push-Pull	Half-Bridge, Push-Pull	Half-Bridge, Push-Pull	Half-Bridge, Push-Pull
Output Type	Transistor Driver	Transistor Driver	Transistor Driver	Transistor Driver
Output Configuration	Positive	Positive	Positive	Positive
Voltage - Supply (Vcc/Vdd)	15V ~ 90V	15V ~ 90V	15V ~ 90V	15V ~ 90V
Frequency - Switching	200kHz, 600kHz	200kHz, 600kHz	200kHz, 600kHz	200kHz, 600kHz
Synchronous Rectifier	Yes	Yes	Yes	Yes
Clock Sync	Yes	Yes	Yes	Yes
Control Features	Dead Time Control, Frequency Control, Soft Start	Dead Time Control, Frequency Control, Soft Start	Dead Time Control, Frequency Control, Soft Start	Dead Time Control, Frequency Control, Soft Start
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Package / Case	16-TSSOP	16-TSSOP	16-TSSOP	16-TSSOP
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Not specified	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)
Inventory Status	5676 Pcs	3758 Pcs	1124 Pcs	14925 Pcs

Engineering Selection Recommendations

For New Designs and Active Production:

Use LM5041MTCX/NOPB as the primary selection. This part is active, ROHS3 compliant, and maintains the highest inventory availability (14925 pcs). It satisfies all regulatory requirements and ensures long-term supply continuity.

For RoHS3 Compliance Requirements:

LM5041AMTCX/NOPB and LM5041BMTCX/NOPB are both ROHS3 compliant alternatives. LM5041AMTCX/NOPB is available in Cut Tape and Digi-Reel packaging, while LM5041BMTCX/NOPB is supplied in Tape & Reel format.

For Legacy Systems or Existing Inventory:

The original LM5041AMTCX (obsolete, RoHS non-compliant) remains functionally equivalent but is no longer recommended for new procurement due to obsolescence status and lack of RoHS compliance.

All substitute parts are electrically and mechanically interchangeable within the 16-TSSOP package footprint and maintain identical functional specifications.

Frequently Asked Questions (FAQ)

Q: Can LM5041AMTCX/NOPB directly replace LM5041AMTCX?

A: Yes. Both parts are electrically and mechanically identical. The primary difference is product status (active vs. obsolete) and RoHS compliance. LM5041AMTCX/NOPB is the active equivalent with ROHS3 compliance.

Q: What is the difference between LM5041AMTCX/NOPB, LM5041BMTCX/NOPB, and LM5041MTCX/NOPB?

A: All three parts are parametrically equivalent with identical electrical specifications and 16-TSSOP packaging. Differences exist only in packaging format (Cut Tape & Digi-Reel vs. Tape & Reel) and inventory availability. The suffix designations (A, B, M) indicate packaging and qualification variants within the LM5041 product family.

Q: Are these parts pin-compatible?

A: Yes. All substitute parts use the 16-TSSOP package with identical pin configuration and footprint dimensions (0.173", 4.40mm width).

Q: Do all substitute parts support the same switching frequencies?

A: Yes. All parts support 200kHz and 600kHz switching frequency options with identical control features including dead time control, frequency control, and soft start.

Q: Which part should be selected for new designs?

A: LM5041MTCX/NOPB is recommended for new designs. It is active, ROHS3 compliant, and has the highest inventory availability, ensuring supply continuity and regulatory compliance.

Q: Are there any thermal or operating condition differences between substitute parts?

A: No. All parts operate across the identical temperature range of -40°C to 125°C (TJ) and maintain the same supply voltage specifications (15V ~ 90V).

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