ISL6744ABZ Equivalent & Substitute Parts

Part Overview

The ISL6744ABZ is a Full-Bridge, Half-Bridge Regulator controller IC manufactured by Renesas Electronics Corporation, designed for positive, isolation-capable output Step-Up/Step-Down DC-DC applications. This device operates as a transistor driver with integrated frequency control and soft start features, supporting switching frequencies up to 1MHz with a maximum duty cycle of 99%.

The ISL6744ABZ is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this controller topology.

Substiute Parts

ISL6744ABZ

Renesas Electronics CorporationIn Stock: 1929ISL6744ABZ Datasheet

Current PartRFQ

ISL6744AABZ

Renesas Electronics CorporationIn Stock: 2324ISL6744AABZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISL6744ABZ is determined by strict equivalence across the following critical parameters:

• Output Type: Transistor Driver
• Function: Step-Up/Step-Down
• Output Configuration: Positive, Isolation Capable
• Topology: Full-Bridge, Half-Bridge
• Number of Outputs: 1
• Output Phases: 1
• Voltage - Supply (Vcc/Vdd): 9V ~ 16V
• Frequency - Switching: Up to 1MHz
• Duty Cycle (Max): 99%
• Synchronous Rectifier: Yes
• Control Features: Frequency Control, Soft Start
• Operating Temperature: -40°C ~ 105°C (TA)
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 3 (168 Hours)

The ISL6744AABZ meets all substitution criteria as an active product variant within the same base product family (ISL6744), maintaining identical electrical specifications, thermal performance, and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The ISL6744AABZ is the direct substitute for the obsolete ISL6744ABZ. Both parts are manufactured by Renesas Electronics Corporation and share identical electrical, thermal, and mechanical specifications. The ISL6744AABZ maintains active product status, ensuring ongoing availability and supply chain support.

Both parts comply with ROHS3 requirements and carry identical REACH status classification. Moisture sensitivity level (MSL 3, 168 Hours) and regulatory compliance (ECCN: EAR99, HTSUS: 8542.39.0001) are equivalent across both variants.

The transition from ISL6744ABZ to ISL6744AABZ requires no circuit redesign, PCB layout modification, or thermal management adjustment. Pin configuration, package dimensions, and electrical performance remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can ISL6744AABZ directly replace ISL6744ABZ in existing designs?

A: Yes. The ISL6744AABZ is electrically and mechanically identical to the ISL6744ABZ. No circuit modifications, PCB changes, or firmware updates are required. Both parts operate within the same supply voltage range (9V ~ 16V), switching frequency (up to 1MHz), and temperature range (-40°C ~ 105°C).

Q: What is the primary difference between ISL6744ABZ and ISL6744AABZ?

A: The ISL6744ABZ is classified as obsolete, while the ISL6744AABZ maintains active product status. Both parts are functionally equivalent. The ISL6744AABZ is supplied in Tube packaging, whereas the ISL6744ABZ packaging specification was not provided.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001). Moisture sensitivity level (MSL 3, 168 Hours) is identical.

Q: Is the 8-SOIC package identical for both parts?

A: Yes. Both parts use the 8-SOIC package with 0.154" width (3.90mm). Pin configuration, spacing, and thermal characteristics are identical.

Q: What inventory status should be considered for procurement?

A: The ISL6744ABZ has 1910 pieces in stock as new original inventory. The ISL6744AABZ has 2300 pieces in stock as new original inventory. For new designs or long-term production, the ISL6744AABZ is recommended due to its active product status.