E-L6925D Equivalent & Substitute Parts

Part Overview

The E-L6925D is a buck switching regulator IC manufactured by STMicroelectronics, classified as a Power Management (PMIC) component. This device functions as a step-down converter with positive adjustable output, delivering up to 800mA at a fixed output voltage range of 0.6V to 5.5V from an input supply of 2.7V to 5.5V. The E-L6925D operates at a switching frequency of 600kHz and incorporates a synchronous rectifier for improved efficiency.

The E-L6925D is currently listed as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute components must maintain functional compatibility across critical electrical parameters including input voltage range, output voltage adjustability, output current capacity, and package form factor.

Substiute Parts

E-L6925D

STMicroelectronicsIn Stock: 935E-L6925D Datasheet

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LTC1877EMS8#PBF

Analog Devices Inc.In Stock: 2837LTC1877EMS8#PBF Datasheet

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LTC1877EMS8#TRPBF

Analog Devices Inc.In Stock: 23795LTC1877EMS8#TRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the E-L6925D are identified based on functional equivalence across the following critical parameters:

Topology & Function: Both substitute parts maintain buck (step-down) switching regulator topology with positive adjustable output configuration and single output.

Package Compatibility: All substitute parts use the 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts.

Output Adjustability: All parts provide adjustable output voltage capability, allowing configuration to application-specific voltage levels.

Synchronous Rectification: All substitute parts incorporate synchronous rectifier functionality for efficiency matching.

Compliance & Certification: All substitute parts maintain ROHS3 compliance and MSL 1 rating, meeting environmental and handling requirements equivalent to the main part.

Electrical Differences: The substitute parts (LTC1877EMS8#PBF and LTC1877EMS8#TRPBF) operate with a maximum output current of 600mA compared to the E-L6925D's 800mA. The substitute parts support a wider input voltage range (2.65V to 10V) and output voltage range (0.8V to 10V) compared to the main part's 2.7V to 5.5V input and 0.6V to 5.5V output specifications. Operating temperature range differs, with substitutes rated to -40°C to 85°C (TA) versus the main part's -40°C to 150°C (TJ).

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The E-L6925D is obsolete, while both LTC1877EMS8#PBF and LTC1877EMS8#TRPBF are active products from Analog Devices Inc. Active product status ensures ongoing availability, technical support, and manufacturing continuity for new designs and production runs.

Packaging & Availability: LTC1877EMS8#TRPBF is available in Cut Tape (CT) & Digi-Reel® packaging with 23,737 pieces in stock, providing superior availability for high-volume production. LTC1877EMS8#PBF is available in Tube packaging with 2,796 pieces in stock, suitable for lower-volume applications.

Compliance Alignment: Both substitute parts maintain ROHS3 compliance and MSL 1 rating, matching the environmental and handling specifications of the main part. Both are classified under the same ECCN (EAR99) and HTSUS (8542.39.0001) codes.

Output Current Limitation: Applications requiring the full 800mA output current of the E-L6925D cannot be directly substituted with the LTC1877 series, which is rated for 600mA maximum output current. Design review is required for applications operating near or exceeding 600mA output current.

Voltage Range Compatibility: The substitute parts support wider input and output voltage ranges than the main part. Applications operating within the E-L6925D's specified ranges (2.7V to 5.5V input, 0.6V to 5.5V output) are compatible with the substitute parts' extended ranges.

Frequently Asked Questions (FAQ)

Q: Can the LTC1877EMS8 series directly replace the E-L6925D in existing designs?

A: The LTC1877EMS8 series maintains functional compatibility in topology, package form factor, and adjustable output configuration. However, the output current rating differs: the E-L6925D supports 800mA while the LTC1877EMS8 series supports 600mA. Applications operating at or below 600mA output current are compatible. Applications requiring higher output current require design modification or alternative component selection.

Q: What is the difference between LTC1877EMS8#PBF and LTC1877EMS8#TRPBF?

A: Both parts are electrically identical. The difference is packaging format: LTC1877EMS8#PBF is supplied in Tube packaging, while LTC1877EMS8#TRPBF is supplied in Cut Tape (CT) & Digi-Reel® packaging. The Digi-Reel® format is optimized for automated assembly and high-volume production. Selection depends on manufacturing process requirements and volume.

Q: Are the package dimensions identical between the E-L6925D and substitute parts?

A: Yes. All parts use the 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) surface mount package. PCB layouts and footprints are mechanically compatible without modification.

Q: What is the impact of the 50kHz switching frequency difference?

A: The E-L6925D operates at 600kHz while the LTC1877EMS8 series operates at 550kHz. This 50kHz difference affects filter component sizing and EMI characteristics. Applications with frequency-sensitive filtering or EMI requirements require verification of filter performance with the substitute part's switching frequency.

Q: Can the E-L6925D's 0.6V minimum output voltage be achieved with the LTC1877EMS8 series?

A: No. The LTC1877EMS8 series has a minimum output voltage of 0.8V, compared to the E-L6925D's 0.6V minimum. Applications requiring output voltages below 0.8V cannot use the LTC1877EMS8 series as a substitute.

Q: What is the operating temperature range difference?

A: The E-L6925D is rated for -40°C to 150°C (junction temperature), while the LTC1877EMS8 series is rated for -40°C to 85°C (ambient temperature). Applications requiring operation above 85°C ambient temperature or with high junction temperature rise cannot use the LTC1877EMS8 series.

Q: Are both substitute parts ROHS3 compliant?

A: Yes. Both LTC1877EMS8#PBF and LTC1877EMS8#TRPBF are ROHS3 compliant with MSL 1 rating, matching the compliance profile of the E-L6925D.