LM26001MXAX Equivalent & Substitute Parts

Part Overview

The LM26001MXAX is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion applications. It delivers positive adjustable output with a maximum current rating of 1.5A across a wide input voltage range of 3V to 38V. The device operates at switching frequencies between 150kHz and 500kHz, making it suitable for compact power management designs requiring efficient DC-DC conversion.

The LM26001MXAX is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently using this regulator.

Key Parameters

Parameter	Value
Function	Step-Down (Buck)
Output Configuration	Positive
Output Type	Adjustable
Number of Outputs	1
Voltage - Input (Min)	3V
Voltage - Input (Max)	38V
Voltage - Output (Min/Fixed)	1.234V
Voltage - Output (Max)	35V
Current - Output	1.5A
Frequency - Switching	150kHz ~ 500kHz
Synchronous Rectifier	No
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	16-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the LM26001MXAX are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Function: Step-Down (Buck) topology
Output Configuration: Positive adjustable output
Number of Outputs: Single output
Voltage - Input Range: 3V minimum to 38V maximum
Voltage - Output Range: 1.234V minimum to 35V maximum
Current - Output: 1.5A rating
Frequency - Switching: 150kHz ~ 500kHz operating range
Package / Case: 16-PowerTSSOP form factor
Mounting Type: Surface Mount

All substitute parts listed maintain identical electrical specifications and physical packaging to ensure direct functional replacement without circuit redesign.

Parameter Comparison

Parameter	LM26001MXAX	LM26001MXAX/NOPB
Manufacturer	Texas Instruments	Texas Instruments
Category	Power Management (PMIC)	Power Management (PMIC)
Function	Step-Down	Step-Down
Output Configuration	Positive	Positive
Output Type	Adjustable	Adjustable
Number of Outputs	1	1
Voltage - Input (Min)	3V	3V
Voltage - Input (Max)	38V	38V
Voltage - Output (Min/Fixed)	1.234V	1.234V
Voltage - Output (Max)	35V	35V
Current - Output	1.5A	1.5A
Frequency - Switching	150kHz ~ 500kHz	150kHz ~ 500kHz
Synchronous Rectifier	No	No
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Package / Case	16-PowerTSSOP (0.173", 4.40mm Width)	16-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The LM26001MXAX/NOPB is the direct substitute for the obsolete LM26001MXAX. Both parts share identical electrical specifications and physical packaging, enabling direct replacement in existing designs.

The primary distinction between these parts is product status and regulatory compliance. The LM26001MXAX is classified as obsolete, while the LM26001MXAX/NOPB maintains active product status with current manufacturing support. Additionally, the LM26001MXAX/NOPB carries ROHS3 compliance certification, whereas the original part is RoHS non-compliant. Both parts maintain equivalent moisture sensitivity ratings and REACH status.

For new designs or applications requiring regulatory compliance with modern environmental standards, the LM26001MXAX/NOPB is the appropriate selection. For legacy system maintenance where the original part specification must be preserved, the LM26001MXAX remains functionally equivalent where inventory permits.

Frequently Asked Questions (FAQ)

Q: Can the LM26001MXAX/NOPB directly replace the LM26001MXAX in existing circuits?

A: Yes. Both parts are electrically and mechanically identical. The LM26001MXAX/NOPB operates across the same input voltage range (3V to 38V), delivers the same output current (1.5A), and uses the identical 16-PowerTSSOP package. No circuit modifications are required for substitution.

Q: What is the difference between LM26001MXAX and LM26001MXAX/NOPB?

A: The primary differences are product status and compliance certification. The LM26001MXAX is obsolete and RoHS non-compliant. The LM26001MXAX/NOPB is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 16-PowerTSSOP package with identical pinout and physical dimensions (0.173" width, 4.40mm). PCB layouts and component placement require no modification.

Q: Which part should be selected for new designs?

A: The LM26001MXAX/NOPB is the appropriate choice for new designs. It maintains active product status, current manufacturing support, and ROHS3 compliance certification.

Q: What is the switching frequency range for these regulators?

A: Both the LM26001MXAX and LM26001MXAX/NOPB operate at switching frequencies between 150kHz and 500kHz, suitable for compact power management applications with minimal external component requirements.

Q: Are moisture sensitivity considerations different between these parts?

A: No. Both parts carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message