LM5025DMTC/NOPB Equivalent & Substitute Parts

Part Overview

The LM5025DMTC/NOPB is a Forward Converter Regulator IC from Texas Instruments, designed for positive, isolation-capable output step-up/step-down DC-DC control applications. This component operates as a transistor driver with integrated dead time control, frequency control, and soft start features. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain identical electrical and mechanical specifications while offering improved availability or alternative packaging options.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Base Product Number	LM5025
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 Range (Vcc/Vdd)	8V ~ 15V
Switching Frequency Range	200kHz ~ 580kHz
Maximum Duty Cycle	80%
Operating Temperature Range	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM5025DMTC/NOPB is determined by strict equivalence across the following critical parameters:

Topology & Function: Forward Converter with Step-Up/Step-Down capability
Output Configuration: Positive, Isolation Capable with 2 outputs
Electrical Specifications: 8V ~ 15V supply voltage, 200kHz ~ 580kHz switching frequency, 80% maximum duty cycle
Control Features: Dead Time Control, Frequency Control, Ramp, and Soft Start
Operating Temperature: -40°C ~ 125°C (TJ)
Compliance: ROHS3 Compliant, MSL 1

Substitute parts are grouped into two categories:

MFR Recommended Substitute (LM5025SD/NOPB): Identical electrical specifications with alternative packaging (16-WSON 5x5 vs. 16-TSSOP). Active product status with higher inventory availability.
Parametric Equivalents (LM5025AMTC/NOPB, LM5025MTC/NOPB): Identical electrical and mechanical specifications in 16-TSSOP packaging. Last Time Buy status indicates limited future availability.

Parameter Comparison

Parameter	LM5025DMTC/NOPB	LM5025SD/NOPB	LM5025AMTC/NOPB	LM5025MTC/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Last Time Buy	Last Time Buy
Package / Case	16-TSSOP (0.173", 4.40mm Width)	16-WFDFN Exposed Pad	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP (0.173", 4.40mm Width)
Packaging Type	Tube	Tape & Reel (TR)	Tube	Tube
Voltage Supply (Vcc/Vdd)	8V ~ 15V	8V ~ 15V	8V ~ 15V	8V ~ 15V
Switching Frequency	200kHz ~ 580kHz	200kHz ~ 580kHz	200kHz ~ 580kHz	200kHz ~ 580kHz
Duty Cycle (Max)	80%	80%	80%	80%
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Control Features	Dead Time Control, Frequency Control, Ramp, Soft Start	Dead Time Control, Frequency Control, Ramp, Soft Start	Dead Time Control, Frequency Control, Ramp, Soft Start	Dead Time Control, Frequency Control, Ramp, Soft Start
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (Same PCB Layout)

Select LM5025AMTC/NOPB or LM5025MTC/NOPB. Both maintain identical 16-TSSOP packaging and pinout as the obsolete LM5025DMTC/NOPB. LM5025AMTC/NOPB offers 1900 units in stock; LM5025MTC/NOPB offers 2512 units. Both are Last Time Buy status, indicating limited future procurement windows.

For Active Product Status with Alternative Packaging

Select LM5025SD/NOPB. This part maintains all electrical specifications and control features but uses 16-WSON (5x5) packaging instead of 16-TSSOP. Active product status ensures long-term availability. PCB layout redesign is required due to different package footprint. Inventory availability is 2200 units.

Compliance Considerations

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature ranges. No compliance trade-offs exist between options.

Frequently Asked Questions (FAQ)

Q: Can LM5025SD/NOPB replace LM5025DMTC/NOPB without PCB modification?

A: No. LM5025SD/NOPB uses 16-WSON (5x5) packaging versus the 16-TSSOP package of LM5025DMTC/NOPB. Different footprints require PCB layout redesign. Pin functionality and electrical specifications are identical.

Q: What is the difference between LM5025AMTC/NOPB and LM5025MTC/NOPB?

A: Both parts are parametric equivalents with identical electrical specifications, 16-TSSOP packaging, and operating characteristics. The primary difference is product status (both Last Time Buy) and inventory levels (1900 vs. 2512 units). Selection depends on procurement quantity and timeline requirements.

Q: Why is LM5025DMTC/NOPB classified as obsolete?

A: Obsolete status indicates Texas Instruments has discontinued production and support. Substitute parts provide equivalent functionality with improved availability or active product status.

Q: Are all substitute parts suitable for -40°C to 125°C operating range applications?

A: Yes. All substitute parts maintain the identical -40°C ~ 125°C (TJ) operating temperature range as the original LM5025DMTC/NOPB.

Q: What packaging format should I select for high-volume production?

A: LM5025SD/NOPB is supplied in Tape & Reel (TR) format, suitable for automated assembly. LM5025AMTC/NOPB and LM5025MTC/NOPB are supplied in Tube format, typically for lower-volume or manual assembly processes.

Q: Do all substitute parts support the same control features?

A: Yes. All substitute parts include Dead Time Control, Frequency Control, Ramp, and Soft Start features. Electrical performance across 8V ~ 15V supply voltage and 200kHz ~ 580kHz switching frequency ranges is identical.

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