MP3385AGR-Z Equivalent & Substitute Parts

Part Overview

The MP3385AGR-Z is an active LED Driver IC manufactured by Monolithic Power Systems, classified as a Power Management PMIC. This device functions as a 4-output DC-DC controller with step-up (boost) topology, designed for LED backlight applications. The part operates with a supply voltage range of 4.5V to 33V and delivers up to 300mA per channel at 80V output. The device is currently in active production status and is RoHS3 compliant with MSL-1 moisture sensitivity rating.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters of the LED driver controller category, particularly when the main part becomes unavailable or when design requirements necessitate alternative sourcing options.

Substiute Parts

MP3385AGR-Z

Monolithic Power SystemsIn Stock: 1475MP3385AGR-Z Datasheet

Current PartRFQ

ISL97687IRTZ

Renesas Electronics CorporationIn Stock: 3064ISL97687IRTZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for LED driver controller ICs is determined by functional equivalence across the following critical parameters:

• Device Type & Topology: Both main and substitute parts must be DC-DC controllers with step-up (boost) topology
• Output Configuration: Number of outputs must match (4 outputs required)
• Supply Voltage Range: Substitute must operate within or encompass the main part's supply voltage window
• Output Current Capability: Substitute current rating must meet or exceed the application requirement
• Dimming Control Methods: Substitute must support at least one common dimming method (Analog, PWM, or I2C)
• Package Compatibility: Physical package must be surface-mount QFN with exposed pad
• Compliance & Status: Both parts must be active production status and RoHS3 compliant

The ISL97687IRTZ from Renesas Electronics Corporation qualifies as a substitute based on matching topology (step-up boost), output count (4 outputs), surface-mount QFN packaging, active product status, and RoHS3 compliance. Electrical parameter variations exist and are documented in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Both the MP3385AGR-Z and ISL97687IRTZ are active production components with RoHS3 compliance and REACH unaffected status, meeting standard regulatory requirements for industrial and consumer applications.

The MP3385AGR-Z provides a lower minimum supply voltage threshold (4.5V versus 9V), higher per-channel current output (300mA versus 160mA), and includes I2C dimming control in addition to analog and PWM methods. The device operates across a wider temperature range (125°C maximum junction temperature versus 105°C ambient temperature for the substitute).

The ISL97687IRTZ operates at higher switching frequencies (up to 1.2MHz versus 900kHz) and is packaged in a larger 28-pin QFN format compared to the 20-pin QFN of the main part. The substitute has a higher moisture sensitivity level (MSL-3 versus MSL-1), requiring controlled storage conditions.

Selection between these parts depends on application-specific requirements: the MP3385AGR-Z is preferred for designs requiring lower input voltage operation, higher per-channel current delivery, or I2C control capability. The ISL97687IRTZ is suitable for applications where the higher minimum supply voltage and reduced per-channel current are acceptable, and where the larger package footprint can be accommodated.

Frequently Asked Questions (FAQ)

Q: Can the ISL97687IRTZ directly replace the MP3385AGR-Z in an existing design?

A: Direct replacement requires design verification. The ISL97687IRTZ has a minimum supply voltage of 9V (versus 4.5V for the MP3385AGR-Z), lower per-channel current output (160mA versus 300mA), and lacks I2C dimming control. PCB layout modifications are necessary due to the larger 28-pin package versus the 20-pin package of the main part.

Q: What are the key electrical differences between these parts?

A: The MP3385AGR-Z supports lower input voltages starting at 4.5V and delivers higher output current per channel (300mA). The ISL97687IRTZ requires a minimum 9V input but operates at higher switching frequencies. The MP3385AGR-Z includes I2C dimming capability, while the ISL97687IRTZ supports only analog and PWM dimming methods.

Q: Are there package compatibility considerations?

A: Yes. The MP3385AGR-Z uses a 20-pin QFN (4x4mm) package, while the ISL97687IRTZ uses a 28-pin QFN (5x5mm) package. PCB layout and footprint modifications are required for substitution. Both packages feature exposed pads and are surface-mount compatible.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS3 compliant and REACH unaffected. However, the ISL97687IRTZ has MSL-3 moisture sensitivity (168-hour limit) compared to MSL-1 (unlimited) for the MP3385AGR-Z, requiring different storage and handling protocols.

Q: What is the operating temperature range difference?

A: The MP3385AGR-Z operates from -40°C to 125°C (junction temperature), while the ISL97687IRTZ operates from -40°C to 105°C (ambient temperature). The MP3385AGR-Z provides a higher maximum operating temperature specification.