LT8648SEV#PBF Equivalent & Substitute Parts

Part Overview

The LT8648SEV#PBF is an Active status buck switching regulator IC manufactured by Analog Devices Inc., part of the Silent Switcher®2 series. This positive adjustable step-down regulator delivers 15A output current with an input voltage range of 3V to 42V and adjustable output from 0.6V to 42V. The device integrates a synchronous rectifier and operates across a switching frequency range of 200kHz to 2.2MHz in a 36-TFQFN exposed pad surface mount package.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance are maintained across the product line. Alternative part numbers within the LT8648 base product family provide options for inventory availability, extended operating temperature ranges, and supply chain flexibility while preserving circuit functionality.

Substiute Parts

LT8648SEV#PBF

Analog Devices Inc.In Stock: 69135LT8648SEV#PBF Datasheet

Current PartRFQ

LT8648SHV#PBF

Analog Devices Inc.In Stock: 2129LT8648SHV#PBF Datasheet

DirectRFQ

LT8648SJV#PBF

Analog Devices Inc.In Stock: 69275LT8648SJV#PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LT8648SEV#PBF are qualified based on strict electrical and mechanical equivalence within the LT8648 product family. The substitution criteria are defined by the following parameters:

Electrical Equivalence Requirements:

• Identical output current rating (15A)
• Identical input voltage range (3V to 42V)
• Identical output voltage range (0.6V to 42V)
• Identical switching frequency range (200kHz to 2.2MHz)
• Identical synchronous rectifier integration (Yes)
• Identical output configuration (Positive Adjustable)

Mechanical & Package Equivalence Requirements:

• Identical package type (36-TFQFN Exposed Pad)
• Identical supplier device package (36-LQFN 7x4)
• Identical mounting type (Surface Mount)

Regulatory & Compliance Equivalence:

• ROHS3 Compliant status
• REACH Unaffected status
• Moisture Sensitivity Level 3 (168 Hours)

The LT8648SEV#PBF qualifies two substitute parts: LT8648SHV#PBF and LT8648SJV#PBF. These parts maintain full electrical and mechanical compatibility while differing in operating temperature range specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LT8648SEV#PBF, LT8648SHV#PBF, and LT8648SJV#PBF—maintain Active product status and full compliance with ROHS3 and REACH regulations. The parts are electrically and mechanically identical across all specified parameters.

The primary differentiation between these parts is the maximum operating junction temperature:

LT8648SEV#PBF: Maximum operating temperature of -40°C to 125°C (TJ)

LT8648SHV#PBF and LT8648SJV#PBF: Extended maximum operating temperature of -40°C to 150°C (TJ)

Selection between these parts depends on the thermal operating requirements of the target application. Applications requiring operation at junction temperatures above 125°C must use either LT8648SHV#PBF or LT8648SJV#PBF. For applications with thermal requirements within the -40°C to 125°C range, all three parts are functionally equivalent.

All parts are manufactured by Analog Devices Inc., carry identical electrical specifications, and are packaged in the same 36-TFQFN exposed pad configuration. Inventory availability and supply chain considerations may also influence part selection among these qualified substitutes.

Frequently Asked Questions (FAQ)

Q: Are LT8648SHV#PBF and LT8648SJV#PBF direct substitutes for LT8648SEV#PBF?

A: Yes, LT8648SHV#PBF and LT8648SJV#PBF are direct substitutes for LT8648SEV#PBF. All three parts share identical electrical specifications, output current ratings (15A), input/output voltage ranges, switching frequency capabilities, and package configurations. The parts differ only in maximum operating junction temperature specifications.

Q: What is the key difference between LT8648SEV#PBF and the substitute parts?

A: The LT8648SEV#PBF operates at a maximum junction temperature of 125°C, while LT8648SHV#PBF and LT8648SJV#PBF extend this to 150°C. This difference accommodates applications with higher thermal operating requirements. All other electrical and mechanical parameters remain identical.

Q: Can I use LT8648SHV#PBF or LT8648SJV#PBF in place of LT8648SEV#PBF in existing designs?

A: Yes. The substitute parts are pin-compatible, package-compatible, and electrically equivalent. They can be used as direct replacements in existing circuit designs without modification. The extended temperature rating of the substitute parts provides additional thermal margin in applications operating near the upper temperature limits.

Q: Are all three parts in the same package?

A: Yes. All three parts use the 36-TFQFN exposed pad package with a 7x4mm supplier device package footprint. They are mechanically and electrically compatible for surface mount assembly.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 Compliant and REACH Unaffected. They carry Moisture Sensitivity Level 3 (168 Hours) and are classified under ECCN EAR99 with HTSUS code 8542.39.0001.

Q: Which part should I select for high-temperature applications?

A: For applications requiring operation at junction temperatures above 125°C, select either LT8648SHV#PBF or LT8648SJV#PBF, both rated to 150°C. For applications operating within the -40°C to 125°C range, LT8648SEV#PBF is suitable.

Q: Are these parts from the same product series?

A: Yes. All three parts belong to the Analog Devices Inc. Silent Switcher®2 series and share the LT8648 base product number. They are part of the same product family with consistent design and performance characteristics.