LM25010MHX Equivalent & Substitute Parts

Part Overview

The LM25010MHX is a buck switching regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 1A output current with an adjustable output voltage range from 2.5V to 37V, suitable for step-down conversion from input voltages between 6V and 42V. The main part number 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-Down (Buck)
Output Configuration	Positive Adjustable
Number of Outputs	1
Voltage - Input (Min/Max)	6V to 42V
Voltage - Output (Min/Max)	2.5V to 37V
Current - Output	1A
Frequency - Switching	100kHz to 1MHz
Package / Case	14-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C to 125°C (TJ)
Synchronous Rectifier	No

Substitute Part Grouping Explanation

Substitution for the LM25010MHX is determined by strict equivalence across the following critical parameters:

Identical base product number (LM25010)
Matching package type (14-PowerTSSOP)
Identical electrical specifications: input voltage range (6V–42V), output voltage range (2.5V–37V), output current (1A), and switching frequency (100kHz–1MHz)
Same topology (buck converter, positive adjustable output)
Surface mount configuration

The substitute parts listed maintain full electrical and mechanical compatibility with the original part. Differences in product status, packaging format, and compliance certifications are noted but do not affect functional interchangeability in applications where the original specifications are met.

Parameter Comparison

Parameter	LM25010MHX	LM25010MHX/NOPB	LM25010Q0MHX/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active
Function	Step-Down	Step-Down	Step-Down
Output Configuration	Positive Adjustable	Positive Adjustable	Positive Adjustable
Voltage - Input (Min/Max)	6V to 42V	6V to 42V	6V to 42V
Voltage - Output (Min/Max)	2.5V to 37V	2.5V to 37V	2.5V to 37V
Current - Output	1A	1A	1A
Frequency - Switching	100kHz to 1MHz	100kHz to 1MHz	100kHz to 1MHz
Package / Case	14-PowerTSSOP	14-PowerTSSOP	14-PowerTSSOP
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Synchronous Rectifier	No	No	No
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Standard	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Grade	Commercial	Commercial	Automotive (AEC-Q100)

Engineering Selection Recommendations

Both LM25010MHX/NOPB and LM25010Q0MHX/NOPB are direct functional equivalents to the obsolete LM25010MHX. Selection between them depends on application requirements and compliance mandates:

LM25010MHX/NOPB is the primary replacement for general commercial applications. It maintains identical electrical specifications and operating temperature range while offering active product status and ROHS3 compliance. This part is available in Cut Tape and Digi-Reel packaging formats.

LM25010Q0MHX/NOPB is specified for automotive applications requiring AEC-Q100 qualification. It extends the operating temperature range to -40°C to 150°C and is supplied in Tape & Reel format. This variant is appropriate only when automotive-grade components and extended temperature performance are required.

For applications without automotive requirements or extended temperature specifications, LM25010MHX/NOPB is the recommended choice due to broader packaging availability and active inventory status.

Frequently Asked Questions (FAQ)

Q: Can LM25010MHX/NOPB directly replace the obsolete LM25010MHX?

A: Yes. Both parts share identical electrical specifications, package type (14-PowerTSSOP), and functional characteristics. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modifications are required.

Q: What is the difference between LM25010MHX/NOPB and LM25010Q0MHX/NOPB?

A: The LM25010Q0MHX/NOPB variant includes automotive-grade qualification (AEC-Q100) and extends the operating temperature range to 150°C. The LM25010MHX/NOPB is rated to 125°C and is intended for commercial applications. Electrical performance and package dimensions are identical.

Q: Are there packaging differences between the substitute parts?

A: Yes. LM25010MHX/NOPB is available in Cut Tape (CT) and Digi-Reel formats, while LM25010Q0MHX/NOPB is supplied in Tape & Reel (TR) format. These differences affect procurement and assembly processes but do not impact electrical or mechanical compatibility.

Q: Is the LM25010Q0MHX/NOPB suitable for non-automotive applications?

A: Yes. The automotive qualification is an additional certification; the part functions identically to the commercial variant. However, automotive-grade components typically carry higher cost. Use the commercial LM25010MHX/NOPB unless automotive specifications are explicitly required.

Q: What compliance certifications apply to these substitute parts?

A: Both LM25010MHX/NOPB and LM25010Q0MHX/NOPB are ROHS3 compliant and REACH unaffected. The LM25010Q0MHX/NOPB additionally carries AEC-Q100 automotive qualification. All parts have Moisture Sensitivity Level (MSL) 1 (unlimited).

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