ISL97677IRZ LED Driver IC Equivalent & Substitute Parts

Part Overview

The ISL97677IRZ is an 8-output LED driver IC with integrated DC-DC step-up (boost) regulator designed for backlight applications. This device features PWM dimming capability, 50mA per-channel output current, and operates from a 4.75V to 26V supply to deliver up to 45V output. The ISL97677IRZ is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity.

Substiute Parts

ISL97677IRZ

Renesas Electronics CorporationIn Stock: 1241ISL97677IRZ Datasheet

Current PartRFQ

ISL97678IRZ

Renesas Electronics CorporationIn Stock: 6599ISL97678IRZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISL97677IRZ are identified based on strict parametric equivalence across the following critical specifications:

• DC-DC regulator topology (Step-Up/Boost configuration)
• Number of LED driver outputs (8 channels)
• Input voltage range (4.75V to 26V)
• Output voltage capability (45V)
• Per-channel output current (50mA)
• Switching frequency range (500kHz ~ 1.5MHz)
• PWM dimming functionality
• Package type (32-VFQFN Exposed Pad)
• Operating temperature range (-40°C ~ 85°C)
• Compliance certifications (ROHS3, REACH Unaffected)

The ISL97678IRZ meets all these parameters and is classified as an active product, making it a direct parametric equivalent suitable for replacement in applications currently using the obsolete ISL97677IRZ.

Parameter Comparison

Engineering Selection Recommendations

The ISL97678IRZ is the recommended substitute for the obsolete ISL97677IRZ. Both devices are manufactured by Renesas Electronics Corporation and share identical electrical and mechanical specifications across all critical parameters. The ISL97678IRZ maintains active product status with 6500 units in stock, ensuring supply chain continuity for new designs and production requirements.

Both parts comply with ROHS3 regulations and REACH requirements, with matching moisture sensitivity levels and operating temperature ranges. The identical 32-VFQFN package footprint ensures direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the ISL97678IRZ be used as a direct replacement for the ISL97677IRZ?

A: Yes. The ISL97678IRZ is a parametric equivalent with identical electrical specifications, output configuration, and package type. No circuit modifications are required for substitution.

Q: Are there any differences in supply chain availability?

A: The ISL97677IRZ is obsolete with limited remaining inventory. The ISL97678IRZ is an active product with significantly higher stock availability (6500 units), making it the preferred choice for ongoing production.

Q: Do both parts require the same PCB footprint?

A: Yes. Both devices use the 32-VFQFN Exposed Pad package, ensuring identical land pattern and mounting requirements.

Q: Are compliance certifications identical?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and share the same moisture sensitivity level (MSL 3, 168 hours).

Q: What is the operating temperature range for both devices?

A: Both the ISL97677IRZ and ISL97678IRZ operate across -40°C to 85°C ambient temperature range.