LM5009SDC Equivalent & Substitute Parts

Part Overview

The LM5009SDC is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion with positive adjustable output. It delivers 150mA output current across an input voltage range of 9.5V to 95V, with adjustable output voltage from 2.5V to 85V. The device is housed in an 8-WDFN exposed pad surface mount package.

The LM5009SDC is classified as obsolete and no longer recommended for new designs. Finding equivalent or substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with current product status and improved compliance certifications.

Substiute Parts

LM5009SDC

Texas InstrumentsIn Stock: 3174LM5009SDC Datasheet

Current PartRFQ

LM5009SDC/NOPB

Texas InstrumentsIn Stock: 32158LM5009SDC/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM5009SDC is determined by strict equivalence across the following critical parameters:

• Function: Step-down buck topology
• Output Configuration: Positive adjustable output
• Number of Outputs: Single output
• Input Voltage Range: 9.5V to 95V minimum and maximum
• Output Voltage Range: 2.5V to 85V adjustable
• Output Current: 150mA
• Synchronous Rectifier: Non-synchronous design
• Operating Temperature Range: -40°C to 125°C
• Package Type: 8-WDFN exposed pad surface mount
• Mounting: Surface mount technology

The LM5009SDC/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction lies in product status and compliance certifications, which affect procurement and design lifecycle considerations.

Parameter Comparison

Engineering Selection Recommendations

The LM5009SDC and LM5009SDC/NOPB are electrically and mechanically identical. Selection between these parts should be based on the following factors:

Product Status: The LM5009SDC is classified as obsolete, indicating end-of-life status with no further support or production. The LM5009SDC/NOPB carries "Not For New Designs" status, providing extended availability and support for existing designs but not recommended for new development.

Compliance: The LM5009SDC/NOPB meets ROHS3 compliance requirements, whereas the original LM5009SDC is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, the LM5009SDC/NOPB is the appropriate selection.

Packaging and Availability: The LM5009SDC/NOPB is available in Cut Tape and Digi-Reel packaging options with significantly higher inventory levels (32,100 pcs vs. 3,100 pcs), supporting both prototype and production volume requirements.

For new designs or applications requiring RoHS compliance, the LM5009SDC/NOPB is the preferred substitute. For existing designs currently using the LM5009SDC, migration to LM5009SDC/NOPB maintains full electrical and mechanical compatibility while improving compliance posture and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Are the LM5009SDC and LM5009SDC/NOPB pin-for-pin compatible?

A: Yes. Both parts use the identical 8-WSON (4x4) package with 8-WDFN exposed pad configuration. Pin assignments, electrical characteristics, and mechanical dimensions are identical, enabling direct substitution without PCB redesign.

Q: What is the difference between "Obsolete" and "Not For New Designs" product status?

A: Obsolete status indicates the part has reached end-of-life with no further production or support. "Not For New Designs" indicates the part remains available but is not recommended for new development. The LM5009SDC/NOPB provides extended lifecycle support compared to the fully obsolete LM5009SDC.

Q: Does the LM5009SDC/NOPB meet RoHS requirements?

A: Yes. The LM5009SDC/NOPB is ROHS3 compliant. The original LM5009SDC is RoHS non-compliant. For applications subject to RoHS directives or customer specifications, the LM5009SDC/NOPB is required.

Q: Can I use LM5009SDC/NOPB in existing designs currently using LM5009SDC?

A: Yes. Electrical specifications, output voltage range (2.5V to 85V), output current (150mA), input voltage range (9.5V to 95V), operating temperature range (-40°C to 125°C), and package configuration are identical. Direct substitution is supported without circuit modification.

Q: What packaging options are available for the LM5009SDC/NOPB?

A: The LM5009SDC/NOPB is supplied in Cut Tape (CT) and Digi-Reel packaging formats, suitable for both manual assembly and automated pick-and-place production processes.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts deliver identical electrical performance: 150mA output current, adjustable output voltage from 2.5V to 85V, input voltage range of 9.5V to 95V, non-synchronous rectifier topology, and operating temperature range of -40°C to 125°C.