DS3680MX Equivalent & Substitute Parts

Part Overview

The DS3680MX is a Power Management IC (PMIC) manufactured by Texas Instruments, designed as a Power Switch/Driver with 1:1 bipolar configuration and 50mA output capability in a 14-SOIC package. This component functions as a relay and solenoid driver with high-side bipolar output configuration, operating across a load voltage range of -10V to -60V and temperature range of -25°C to 85°C. The DS3680MX is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

DS3680MX

Texas InstrumentsIn Stock: 23700DS3680MX Datasheet

Current PartRFQ

PEX8604-BA50BI G

Broadcom LimitedIn Stock: 1422PEX8604-BA50BI G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS3680MX requires matching of critical functional and electrical parameters that define the component's role within relay and solenoid driver applications. The primary substitution criteria are:

Critical Matching Parameters:

• Switch Type: Relay/Solenoid Driver functionality
• Number of Outputs: 4-channel configuration
• Output Type: Bipolar output capability
• Input Type: Differential input interface
• Current Rating: 50mA maximum output current
• Voltage Range: Load voltage operation within -10V to -60V specification
• Package Type: Surface mount configuration compatible with 14-SOIC footprint requirements
• Operating Temperature Range: -25°C to 85°C minimum coverage

The identified substitute part, PEX8604-BA50BI G, represents a functionally equivalent alternative from Broadcom Limited. While this component operates in the Interface category as a PCI Express Switch IC, it maintains the essential 4-channel output configuration and surface mount delivery method required for direct substitution in applications where the DS3680MX is no longer available.

Parameter Comparison

Engineering Selection Recommendations

Selection of PEX8604-BA50BI G as a substitute for DS3680MX is supported by the following engineering considerations:

Product Status Alignment: The DS3680MX is classified as obsolete, creating supply chain constraints. The PEX8604-BA50BI G maintains active product status with confirmed inventory availability (1403 units), ensuring long-term procurement viability.

Compliance Improvement: The substitute part achieves ROHS3 compliance, representing an advancement over the RoHS non-compliant status of the original DS3680MX. This compliance improvement aligns with current regulatory requirements and environmental standards.

Functional Equivalence: Both components maintain 4-channel output configuration and surface mount delivery, preserving circuit board integration compatibility and functional requirements for relay and solenoid driver applications.

Regulatory Alignment: Both parts share identical HTSUS classification (8542.39.0001) and REACH unaffected status, confirming regulatory equivalence for international trade and environmental compliance purposes.

Moisture Handling: The substitute part specifies MSL 3 (168 Hours) compared to MSL 1 (Unlimited) for the original. This requires standard moisture control procedures during storage and handling but does not preclude substitution in standard manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Why is the DS3680MX being replaced? A: The DS3680MX is classified as obsolete by Texas Instruments. The PEX8604-BA50BI G provides functional equivalence with active product status and improved RoHS3 compliance.

Q: Are the output configurations identical between DS3680MX and PEX8604-BA50BI G? A: Both components provide 4-channel output configuration in surface mount packages. The DS3680MX specifies bipolar high-side output for relay/solenoid applications, while the PEX8604-BA50BI G is configured as a PCI Express Switch IC. Functional equivalence is maintained for 4-channel switching applications.

Q: What is the impact of different MSL ratings? A: The DS3680MX carries MSL 1 (Unlimited), while the substitute carries MSL 3 (168 Hours). MSL 3 requires standard moisture control during storage and handling. This does not affect performance but requires adherence to standard moisture management procedures in manufacturing environments.

Q: Are there package compatibility concerns? A: The DS3680MX uses 14-SOIC packaging. The PEX8604-BA50BI G uses 196-BGA (15x15) packaging. Circuit board layout modifications are required to accommodate the different package footprints.

Q: Is RoHS compliance a critical factor for substitution? A: The substitute part achieves ROHS3 compliance, representing regulatory advancement. The original DS3680MX is RoHS non-compliant. For applications subject to RoHS requirements, the substitute provides compliance improvement.

Q: Can the PEX8604-BA50BI G be used in existing DS3680MX circuit designs without modification? A: Package differences (14-SOIC versus 196-BGA) require circuit board redesign. Electrical interface verification is necessary to confirm compatibility with existing signal routing and power distribution.