LM5025ASD/NOPB Equivalent & Substitute Parts

Part Overview

The LM5025ASD/NOPB is a Forward Converter Regulator IC manufactured by Texas Instruments, designed for positive, isolation-capable output step-up/step-down DC-DC control applications. This 16-WSON surface mount device operates across an 8V to 15V supply voltage range with switching frequencies between 200kHz and 580kHz. The part is currently in Last Time Buy status, making identification of active equivalent alternatives essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM5025ASD/NOPB
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Topology	Forward Converter
Output Type	Transistor Driver
Function	Step-Up/Step-Down
Output Configuration	Positive, Isolation Capable
Number of Outputs	2
Voltage - Supply (Vcc/Vdd)	8V ~ 15V
Frequency - Switching	200kHz ~ 580kHz
Duty Cycle (Max)	80%
Package / Case	16-WFDFN Exposed Pad
Supplier Device Package	16-WSON (5x5)
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution eligibility for the LM5025ASD/NOPB is determined by strict parametric matching across the following critical criteria:

Topology & Function: Forward Converter topology with step-up/step-down capability and positive, isolation-capable output configuration must remain unchanged.

Electrical Specifications: Supply voltage range (8V ~ 15V), switching frequency range (200kHz ~ 580kHz), duty cycle maximum (80%), and dual output configuration must be identical.

Package & Mounting: 16-WFDFN exposed pad package in 16-WSON (5x5) form factor and surface mount technology must match exactly.

Control Features: Dead time control, frequency control, ramp, and soft start functionality must be present.

Environmental & Compliance: Operating temperature range (-40°C ~ 125°C), RoHS3 compliance, MSL Level 1, and REACH unaffected status must be maintained.

The identified substitute parts meet all these criteria while offering improved product status (Active vs. Last Time Buy), ensuring long-term availability and supply chain stability.

Parameter Comparison

Parameter	LM5025ASD/NOPB	LM5025ASDX/NOPB	LM5025SD/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Category	Power Management (PMIC)	Power Management (PMIC)	Power Management (PMIC)
Topology	Forward Converter	Forward Converter	Forward Converter
Output Type	Transistor Driver	Transistor Driver	Transistor Driver
Function	Step-Up/Step-Down	Step-Up/Step-Down	Step-Up/Step-Down
Output Configuration	Positive, Isolation Capable	Positive, Isolation Capable	Positive, Isolation Capable
Number of Outputs	2	2	2
Voltage - Supply (Vcc/Vdd)	8V ~ 15V	8V ~ 15V	8V ~ 15V
Frequency - Switching	200kHz ~ 580kHz	200kHz ~ 580kHz	200kHz ~ 580kHz
Duty Cycle (Max)	80%	80%	80%
Package / Case	16-WFDFN Exposed Pad	16-WFDFN Exposed Pad	16-WFDFN Exposed Pad
Supplier Device Package	16-WSON (5x5)	16-WSON (5x5)	16-WSON (5x5)
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Last Time Buy	Active	Active
Inventory Status	2243 Pcs New Original In Stock	5690 Pcs New Original In Stock	2200 Pcs New Original In Stock

Engineering Selection Recommendations

LM5025ASDX/NOPB is the primary recommended substitute. This part maintains identical electrical and mechanical specifications while offering Active product status, ensuring continued manufacturer support and long-term availability. Current inventory of 5690 units provides supply security for production requirements.

LM5025SD/NOPB is an alternative equivalent option. This part also maintains full parametric compatibility and Active product status. With 2200 units in stock, it represents a viable secondary choice for design implementation.

Both substitute parts eliminate the procurement risk associated with the Last Time Buy status of the original LM5025ASD/NOPB while preserving complete functional and physical compatibility within forward converter DC-DC control applications.

Frequently Asked Questions (FAQ)

Q: Can LM5025ASDX/NOPB and LM5025SD/NOPB be used interchangeably with LM5025ASD/NOPB?

A: Yes. All three parts share identical electrical specifications, package geometry, and control feature sets. Direct substitution is supported without circuit modification.

Q: What is the difference between the three part numbers?

A: The primary difference is product status. LM5025ASD/NOPB is Last Time Buy, while LM5025ASDX/NOPB and LM5025SD/NOPB are Active. The suffix variations (ASD vs. ASDX vs. SD) reflect internal manufacturing or qualification differences, but electrical and mechanical parameters remain identical.

Q: Are there any package or pinout differences?

A: No. All three parts use the 16-WFDFN exposed pad package in 16-WSON (5x5) form factor with identical pinout and mounting requirements.

Q: Which substitute should I select for new designs?

A: LM5025ASDX/NOPB is recommended for new designs due to Active product status and higher available inventory. LM5025SD/NOPB serves as a secondary option with equivalent specifications.

Q: Are compliance certifications identical across all three parts?

A: Yes. All parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status.

Q: What is the supply voltage operating range for these parts?

A: The supply voltage range is 8V to 15V for all three equivalent parts.

Q: Can these parts operate at the full -40°C to 125°C temperature range?

A: Yes. All three parts are rated for -40°C to 125°C junction temperature operation.

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