ISO5500DW Equivalent & Substitute Parts

Part Overview

The ISO5500DW is a 2.5A gate driver with capacitive coupling technology, rated for 4243Vrms isolation voltage and designed for single-channel gate drive applications in 16-SOIC surface mount packaging. This part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The device operates across the industrial temperature range of -40°C to 125°C and is compliant with ROHS3 standards.

Substiute Parts

ISO5500DW

Texas InstrumentsIn Stock: 3170ISO5500DW Datasheet

Current PartRFQ

ISO5852SDW

Texas InstrumentsIn Stock: 1567ISO5852SDW Datasheet

MFR RecommendedRFQ

UCC21750DW

Texas InstrumentsIn Stock: 313938UCC21750DW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISO5500DW is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use 16-SOIC surface mount packaging with identical 0.295" (7.50mm) width to ensure PCB layout compatibility without redesign.
• Technology: Capacitive coupling isolation technology must be maintained for signal integrity and EMI performance.
• Single Channel Configuration: Gate driver must provide one isolated channel to match the original application topology.
• Isolation Voltage: Substitute parts must meet or exceed the 4243Vrms isolation rating to maintain system safety margins.
• Output Supply Voltage Range: Operating range of 15V ~ 30V ensures compatibility with existing power supply designs.
• Temperature Range: -40°C to 125°C operating range must be supported for industrial applications.
• Compliance Standards: ROHS3 compliance and regulatory certifications (CSA, UL, VDE) ensure continued market acceptance.

Two active alternatives are available: ISO5852SDW and UCC21750DW, both from Texas Instruments, both in 16-SOIC packaging with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

ISO5852SDW is the manufacturer-recommended direct replacement for the ISO5500DW. This part maintains identical package geometry and supply voltage range while providing enhanced isolation voltage (5700Vrms vs. 4243Vrms), improved common mode transient immunity (100kV/µs vs. 25kV/µs), and faster propagation delay (110ns vs. 300ns). The ISO5852SDW is currently in active production status with full regulatory approvals (CQC, CSA, UR, VDE) and ROHS3 compliance.

UCC21750DW represents an alternative for applications requiring significantly higher output current capability (10A vs. 2.5A). This part also provides 5700Vrms isolation, superior common mode transient immunity (150V/ns), and the fastest propagation delay (90ns). The UCC21750DW supports a slightly wider output supply voltage range (13V ~ 33V) and carries UL and VDE certifications with ROHS3 compliance. Selection of this part is appropriate when gate drive current requirements exceed the capabilities of the ISO5500DW or ISO5852SDW.

Both substitute parts are manufactured by Texas Instruments, maintain the required 16-SOIC package format, support the full industrial temperature range, and comply with current regulatory standards. The choice between ISO5852SDW and UCC21750DW depends on specific output current requirements of the application.

Frequently Asked Questions (FAQ)

Q: Can ISO5852SDW be used as a direct pin-for-pin replacement for ISO5500DW?

A: Yes. Both parts use identical 16-SOIC packaging with the same pinout configuration and physical dimensions (0.295" × 7.50mm width). No PCB layout modifications are required for substitution.

Q: What is the primary advantage of ISO5852SDW over the obsolete ISO5500DW?

A: ISO5852SDW provides higher isolation voltage (5700Vrms vs. 4243Vrms), significantly improved common mode transient immunity (100kV/µs vs. 25kV/µs), and faster propagation delay (110ns vs. 300ns). The part is in active production with full regulatory support.

Q: When should UCC21750DW be selected instead of ISO5852SDW?

A: UCC21750DW is selected when the application requires peak output current of 10A. The ISO5852SDW is limited to 2.7A or 5.5A peak output current depending on configuration. Both parts maintain identical package compatibility and operating temperature range.

Q: Are there any supply voltage compatibility concerns when substituting these parts?

A: ISO5500DW and ISO5852SDW both require 15V ~ 30V output supply voltage. UCC21750DW accepts a slightly wider range of 13V ~ 33V. Existing power supply designs for the ISO5500DW are compatible with both substitute parts without modification.

Q: Do all three parts meet current RoHS and regulatory compliance requirements?

A: Yes. ISO5500DW, ISO5852SDW, and UCC21750DW are all ROHS3 compliant with Moisture Sensitivity Level 2 (1 Year). ISO5852SDW carries CQC, CSA, UR, and VDE approvals. UCC21750DW carries UL and VDE approvals. All parts are REACH unaffected and classified as EAR99.

Q: What is the impact of faster propagation delay in the substitute parts?

A: Faster propagation delay (110ns for ISO5852SDW and 90ns for UCC21750DW compared to 300ns for ISO5500DW) reduces switching delay in gate drive circuits, potentially improving system efficiency and reducing switching losses. This is a performance enhancement with no negative compatibility impact.