LM2734ZSD Equivalent & Substitute Parts

Part Overview

The LM2734ZSD 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 0.8V to 18V, operating from a 3V to 20V input supply. The device features a 3MHz switching frequency and is housed in a 6-WDFN exposed pad surface mount package.

The LM2734ZSD is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

LM2734ZSD

Texas InstrumentsIn Stock: 929LM2734ZSD Datasheet

Current PartRFQ

LM2734ZSD/NOPB

Texas InstrumentsIn Stock: 4147LM2734ZSD/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2734ZSD is determined by matching the following critical electrical and mechanical parameters:

• Buck topology with positive adjustable output configuration
• Single output channel
• Input voltage range: 3V to 20V
• Output voltage range: 0.8V to 18V
• Output current capability: 1A
• Switching frequency: 3MHz
• Operating temperature range: -40°C to 125°C
• Surface mount package: 6-WDFN exposed pad (6-WSON 3x3)
• Non-synchronous rectifier design

The LM2734ZSD/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LM2734ZSD/NOPB is the direct substitute for the obsolete LM2734ZSD. Both devices share identical electrical specifications and package configurations, ensuring pin-for-pin and functional compatibility.

The LM2734ZSD/NOPB offers the following advantages:

• Active product status with ongoing manufacturer support and availability
• ROHS3 compliance, meeting current environmental and regulatory requirements
• Equivalent electrical performance across all specified parameters
• Identical thermal and mechanical characteristics

For new designs or production requiring compliance with current environmental standards, the LM2734ZSD/NOPB is the appropriate selection. For legacy system maintenance where the original LM2734ZSD is no longer available, the LM2734ZSD/NOPB provides direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can the LM2734ZSD/NOPB be used as a direct replacement for the LM2734ZSD?

A: Yes. The LM2734ZSD/NOPB is electrically and mechanically identical to the LM2734ZSD. Both devices feature the same buck regulator topology, output voltage range (0.8V to 18V), output current (1A), switching frequency (3MHz), and 6-WSON (3x3) package. Pin-for-pin substitution is supported without circuit modification.

Q: What is the difference between LM2734ZSD and LM2734ZSD/NOPB?

A: The primary differences are product status and RoHS compliance. The LM2734ZSD is obsolete and RoHS non-compliant, while the LM2734ZSD/NOPB is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 6-WDFN exposed pad package with 6-WSON (3x3) supplier device package designation. Pinout and mechanical dimensions are identical.

Q: What is the moisture sensitivity level for these devices?

A: Both the LM2734ZSD and LM2734ZSD/NOPB have a Moisture Sensitivity Level (MSL) of 3, with a floor life of 168 hours. Standard moisture control procedures during storage and handling are required.

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

A: Yes. Both devices are rated for junction temperature operation from -40°C to 125°C, supporting industrial and extended temperature applications.