LM25116MH Equivalent & Substitute Parts

Part Overview

The LM25116MH is a buck regulator positive output step-down DC-DC controller IC manufactured by Texas Instruments. This power management IC operates as a transistor driver with a single output phase, designed for applications requiring regulated step-down voltage conversion from a 6V to 42V supply range. The device features synchronous rectification and clock synchronization capabilities with integrated control features including enable, frequency control, ramp, and soft start functions.

The LM25116MH carries a Last Time Buy product status, indicating limited availability from the original manufacturer. This status necessitates identification of equivalent substitute parts to ensure design continuity and procurement flexibility for new production runs and long-term system support.

Substiute Parts

LM25116MH

Texas InstrumentsIn Stock: 1150LM25116MH Datasheet

Current PartRFQ

LM25116MH/NOPB

Texas InstrumentsIn Stock: 78550LM25116MH/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM25116MH is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Input voltage supply range: 6V ~ 42V
• Switching frequency capability: 50kHz ~ 1MHz
• Output configuration: Positive, single output, single phase
• Synchronous rectifier: Present
• Clock synchronization: Present
• Control feature set: Enable, Frequency Control, Ramp, Soft Start

Physical & Environmental Requirements:

• Package type: 20-PowerTSSOP (20-HTSSOP)
• Mounting: Surface Mount
• Operating temperature: -40°C ~ 125°C
• Moisture sensitivity: MSL 1 (Unlimited)

Compliance & Certification:

• RoHS3 Compliant
• REACH Unaffected

The LM25116MH/NOPB qualifies as a direct substitute based on identical electrical specifications, package configuration, and environmental ratings. The primary distinction is packaging format (Tube vs. standard packaging) and product status (Active vs. Last Time Buy), with no impact on functional or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The LM25116MH/NOPB is the direct substitute for the LM25116MH. Both parts share identical electrical specifications, package configuration, and environmental operating parameters. The LM25116MH/NOPB maintains Active product status with significantly higher inventory availability (78,530 pieces vs. 1,120 pieces), providing superior procurement reliability and supply chain continuity.

Both variants comply with ROHS3 and REACH requirements, ensuring regulatory compliance for applications subject to environmental and hazardous substance restrictions. The MSL 1 rating indicates unlimited shelf life under standard storage conditions, eliminating moisture-related handling constraints.

Selection between these variants should prioritize the LM25116MH/NOPB for new designs and production runs due to its Active status and inventory availability. The LM25116MH remains functionally equivalent for existing designs requiring component replacement or repair.

Frequently Asked Questions (FAQ)

Q: Are the LM25116MH and LM25116MH/NOPB electrically identical?

A: Yes. Both parts share identical electrical specifications including input voltage range (6V ~ 42V), switching frequency capability (50kHz ~ 1MHz), output configuration, synchronous rectifier functionality, and control feature set. They are functionally interchangeable at the circuit level.

Q: What is the difference between LM25116MH and LM25116MH/NOPB?

A: The primary differences are packaging format and product status. The LM25116MH/NOPB is supplied in Tube packaging and maintains Active product status with higher inventory levels. The LM25116MH carries Last Time Buy status, indicating limited future availability from the manufacturer.

Q: Can I use LM25116MH/NOPB as a replacement for LM25116MH in existing designs?

A: Yes. The LM25116MH/NOPB is a direct substitute with identical electrical and mechanical specifications. No circuit modifications or PCB layout changes are required. Both parts use the same 20-PowerTSSOP package with identical pinout and thermal characteristics.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 Compliant and REACH Unaffected. They share identical MSL 1 (Unlimited) moisture sensitivity ratings and environmental operating ranges (-40°C ~ 125°C).

Q: Which part should I specify for new production?

A: Specify the LM25116MH/NOPB for new designs and production runs. This part maintains Active status and provides superior supply chain availability, reducing procurement risk and lead time uncertainty.

Q: Are the pin configurations identical?

A: Yes. Both parts use the 20-HTSSOP package configuration with identical pinout. PCB designs and component placement require no modification when substituting between these parts.