SP7656EN2-L Equivalent & Substitute Parts

Part Overview

The SP7656EN2-L is a buck switching regulator IC manufactured by MaxLinear, Inc., designed for positive adjustable step-down voltage regulation with a 3A output current capability. This device operates across a wide input voltage range of 4.5V to 29V and provides adjustable output voltage from 0.6V to 28V. The component is housed in an 8-SOIC package with exposed pad and features a 600kHz switching frequency. The SP7656EN2-L is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SP7656EN2-L

MaxLinear, Inc.In Stock: 1515SP7656EN2-L Datasheet

Current PartRFQ

TPS5430DDAR

Texas InstrumentsIn Stock: 105313TPS5430DDAR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SP7656EN2-L is determined by alignment of the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator with positive adjustable output
• Output Current Rating: 3A minimum
• Input Voltage Range: Minimum 4.5V, maximum 29V or higher
• Output Voltage Adjustability: Minimum 0.6V to maximum 28V or higher
• Package Compatibility: 8-pin SOIC or equivalent footprint with exposed pad
• Operating Temperature Range: -40°C to 125°C or wider
• Switching Frequency: 600kHz or compatible frequency for system integration

The TPS5430DDAR from Texas Instruments meets these substitution criteria. While the TPS5430DDAR exhibits higher minimum input voltage (5.5V vs. 4.5V) and lower minimum output voltage (1.221V vs. 0.6V), it maintains the 3A output current capability, adjustable positive output configuration, compatible 8-pin package footprint, and identical operating temperature range. The TPS5430DDAR is classified as active product status with full RoHS3 compliance and REACH unaffected designation.

Parameter Comparison

Engineering Selection Recommendations

The TPS5430DDAR is the manufacturer-recommended substitute for the obsolete SP7656EN2-L. Selection of the TPS5430DDAR is supported by the following factors:

• Product Status: The TPS5430DDAR maintains active product status with full manufacturing support and availability, whereas the SP7656EN2-L is obsolete.
• Regulatory Compliance: The TPS5430DDAR is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
• Functional Equivalence: Both devices share identical output current rating (3A), operating temperature range (-40°C to 125°C), and adjustable positive output topology.
• Package Compatibility: Both devices utilize 8-pin SOIC packages with 0.154" (3.90mm) width, enabling direct PCB footprint compatibility.
• Electrical Performance: The TPS5430DDAR provides extended input voltage range (5.5V to 36V vs. 4.5V to 29V) and extended output voltage range (1.221V to 32.04V vs. 0.6V to 28V), offering broader application flexibility.

Applications requiring minimum input voltage below 5.5V or minimum output voltage below 1.221V require design review to confirm compatibility with the TPS5430DDAR specifications.

Frequently Asked Questions (FAQ)

Q: Can the TPS5430DDAR directly replace the SP7656EN2-L without PCB modifications?

A: The TPS5430DDAR and SP7656EN2-L share identical 8-pin SOIC package footprints with 0.154" (3.90mm) width, enabling direct pin-compatible replacement on existing PCBs. However, external component values (feedback resistors, input/output capacitors) may require adjustment based on the specific output voltage and current requirements of your application.

Q: What are the key electrical differences between these devices?

A: The primary electrical differences are: (1) minimum input voltage is 5.5V for TPS5430DDAR versus 4.5V for SP7656EN2-L; (2) minimum output voltage is 1.221V for TPS5430DDAR versus 0.6V for SP7656EN2-L; (3) maximum input voltage is 36V for TPS5430DDAR versus 29V for SP7656EN2-L; (4) switching frequency is 500kHz for TPS5430DDAR versus 600kHz for SP7656EN2-L. These differences may affect component selection for input/output filtering and loop stability.

Q: Is the TPS5430DDAR suitable for applications with input voltage below 5.5V?

A: No. The TPS5430DDAR minimum input voltage specification is 5.5V. Applications requiring operation below 5.5V input voltage are not compatible with this substitute and require alternative component selection.

Q: Does the switching frequency difference (500kHz vs. 600kHz) affect circuit design?

A: The 100kHz frequency difference may affect inductor and capacitor selection for input/output filtering. Lower switching frequency typically results in larger passive component values. Circuit simulation and component recalculation are necessary to ensure proper loop stability and output ripple performance.

Q: Are there any compliance or certification differences?

A: The TPS5430DDAR is ROHS3 compliant and REACH unaffected. The SP7656EN2-L compliance status is not specified in available documentation. Both devices share identical MSL rating of 1 (Unlimited) and ECCN classification of EAR99.

Q: What is the availability status of each device?

A: The SP7656EN2-L is classified as obsolete with limited inventory (1411 pcs reported). The TPS5430DDAR is active product with extensive inventory availability (105300 pcs reported), ensuring long-term supply chain continuity.