LM2682MMX Equivalent & Substitute Parts

Part Overview

The LM2682MMX is a charge pump switching regulator IC designed for negative fixed voltage output applications. It operates as a negative voltage generator with selectable output ratios (-Vin or 2Vin), delivering up to 10mA output current. The device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs or production continuity. The LM2682MMX/NOPB represents the direct manufacturer substitute with improved compliance status and active product availability.

Substiute Parts

LM2682MMX

Texas InstrumentsIn Stock: 1859LM2682MMX Datasheet

Current PartRFQ

LM2682MMX/NOPB

Texas InstrumentsIn Stock: 3006LM2682MMX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2682MMX is determined by strict equivalence across the following critical parameters:

• Topology & Function: Charge pump switching regulator with ratiometric output configuration
• Output Characteristics: Negative fixed voltage output, single output, 10mA current capacity
• Electrical Specifications: Input voltage range 2V–5.5V, output ratios -Vin or 2Vin, 6kHz switching frequency
• Package Compatibility: 8-TSSOP/8-MSOP surface mount package (0.118", 3.00mm width)
• Operating Conditions: Temperature range -40°C to 85°C

The LM2682MMX/NOPB qualifies as a direct substitute because it maintains identical electrical performance, package footprint, and pinout while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LM2682MMX/NOPB is the direct manufacturer substitute for the obsolete LM2682MMX. Selection between these parts is determined by regulatory and supply chain requirements:

• For new designs or production requiring RoHS compliance: Use LM2682MMX/NOPB, which meets ROHS3 standards while maintaining identical electrical and mechanical specifications.
• For legacy system maintenance or non-regulated applications: Either part is electrically equivalent; however, LM2682MMX/NOPB is preferred due to active product status and superior availability.
• Packaging consideration: LM2682MMX/NOPB is supplied in Tape & Reel format, suitable for automated assembly. Verify reel specifications for your production equipment.

Both parts share identical pinout, package footprint, and electrical performance, ensuring direct PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can LM2682MMX/NOPB be used as a direct replacement for LM2682MMX?

A: Yes. Both parts are electrically and mechanically identical. The /NOPB variant offers improved compliance status (ROHS3) and active product availability. No circuit modifications or PCB redesign is required.

Q: What does the /NOPB suffix indicate?

A: /NOPB denotes "No Lead (Pb)" and indicates RoHS3 compliance. This is a manufacturer designation for lead-free versions of the same base product.

Q: Are there differences in package dimensions between these parts?

A: No. Both use the 8-TSSOP/8-MSOP package with identical 0.118" width (3.00mm). Footprint and pinout are identical.

Q: What is the significance of the Tape & Reel packaging for LM2682MMX/NOPB?

A: Tape & Reel packaging is standard for high-volume automated assembly. It provides better handling efficiency and cost-effectiveness in production environments compared to alternative packaging formats.

Q: Why is the original LM2682MMX marked as obsolete?

A: Product obsolescence reflects manufacturer lifecycle decisions. The LM2682MMX/NOPB remains active and is the recommended path for continued supply and compliance with modern regulatory standards.

Q: Are there any electrical performance differences between the two parts?

A: No. Both parts deliver identical electrical performance: 2V–5.5V input range, 10mA output current, 6kHz switching frequency, and -40°C to 85°C operating temperature range.