ISL97687IRTZ LED Driver IC Equivalent & Substitute Parts

Part Overview

The ISL97687IRTZ is an active LED driver IC manufactured by Renesas Electronics Corporation, classified as a Power Management (PMIC) device. This is a 4-output DC-DC controller with step-up (boost) topology, designed for backlight applications requiring analog and PWM dimming control. The device operates from a 9V to 32V supply and delivers 160mA per output channel at frequencies between 200kHz and 1.2MHz. The ISL97687IRTZ maintains active product status and is RoHS3 compliant. Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for this product category.

Substiute Parts

ISL97687IRTZ

Renesas Electronics CorporationIn Stock: 3064ISL97687IRTZ Datasheet

Current PartRFQ

MP3385AGR-Z

Monolithic Power SystemsIn Stock: 1475MP3385AGR-Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MP3385AGR-Z from Monolithic Power Systems qualifies as a substitute for the ISL97687IRTZ based on the following substitution criteria:

Functional Equivalence:

• Both devices are 4-output DC-DC controllers with step-up (boost) topology
• Both support analog and PWM dimming control for backlight applications
• Both are surface-mount PMICs with no internal switches

Electrical Parameter Compatibility:

• Supply voltage range: ISL97687IRTZ operates 9V–32V; MP3385AGR-Z operates 4.5V–33V (overlapping range 9V–32V is compatible)
• Output current capability: MP3385AGR-Z provides 300mA per channel, exceeding the ISL97687IRTZ requirement of 160mA
• Frequency operation: ISL97687IRTZ operates 200kHz–1.2MHz; MP3385AGR-Z operates 100kHz–900kHz (overlapping range 200kHz–900kHz is compatible)
• Operating temperature: ISL97687IRTZ operates -40°C–105°C; MP3385AGR-Z operates -40°C–125°C (MP3385AGR-Z provides extended upper range)

Compliance & Certification:

• Both devices are RoHS3 compliant and REACH unaffected
• Both carry EAR99 ECCN classification

Package Consideration:

• ISL97687IRTZ: 28-WFQFN (5x5)
• MP3385AGR-Z: 20-VFQFN (4x4)
• Different package footprints require PCB redesign

Parameter Comparison

Engineering Selection Recommendations

ISL97687IRTZ Selection Criteria:

• Existing designs with 28-pin QFN footprint compatibility
• Applications requiring the specified 9V–32V supply range without extension to lower voltages
• Designs utilizing analog and PWM dimming without I2C interface requirements
• Thermal environments not exceeding 105°C junction temperature

MP3385AGR-Z Selection Criteria:

• New designs or redesigns accommodating 20-pin QFN footprint
• Applications benefiting from extended supply voltage range (4.5V minimum)
• Systems requiring I2C dimming control in addition to analog and PWM methods
• Thermal environments up to 125°C junction temperature
• Applications requiring higher per-channel current capability (300mA vs. 160mA)
• Designs prioritizing superior moisture sensitivity level (MSL 1 vs. MSL 3)

Both devices maintain active product status and full RoHS3 compliance, ensuring long-term availability and regulatory conformance for backlight LED driver applications.

Frequently Asked Questions (FAQ)

Q: Can MP3385AGR-Z directly replace ISL97687IRTZ without PCB modification?

A: No. The devices use different package footprints: ISL97687IRTZ uses 28-TQFN (5x5) with 28 pins, while MP3385AGR-Z uses 20-QFN (4x4) with 20 pins. PCB redesign is required for pin layout and trace routing.

Q: What is the key electrical difference between these two devices?

A: The MP3385AGR-Z provides higher per-channel current output (300mA vs. 160mA) and extends the supply voltage range to 4.5V minimum. The frequency operating range differs: ISL97687IRTZ spans 200kHz–1.2MHz while MP3385AGR-Z spans 100kHz–900kHz, with an overlapping compatible range of 200kHz–900kHz.

Q: Are both devices suitable for the same backlight applications?

A: Both devices are classified for backlight applications and support 4-output DC-DC boost topology. Functional compatibility depends on whether the application's specific electrical requirements (supply voltage, output current, frequency, dimming method) fall within the overlapping parameter ranges of both devices.

Q: What dimming control differences exist between these parts?

A: ISL97687IRTZ supports analog and PWM dimming. MP3385AGR-Z supports analog, I2C, and PWM dimming. If the application requires I2C-based dimming control, only MP3385AGR-Z is suitable.

Q: How do the operating temperature ranges compare?

A: ISL97687IRTZ operates from -40°C to 105°C (TA). MP3385AGR-Z operates from -40°C to 125°C (TJ). For applications exceeding 105°C, MP3385AGR-Z provides extended thermal capability.

Q: What is the moisture sensitivity difference?

A: ISL97687IRTZ has MSL rating 3 (168 hours maximum floor life). MP3385AGR-Z has MSL rating 1 (unlimited floor life). MP3385AGR-Z is more tolerant to moisture exposure during storage and assembly.

Q: Are both devices RoHS compliant?

A: Yes. Both ISL97687IRTZ and MP3385AGR-Z are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.