MIC3289-16YML-TR LED Driver IC Equivalent & Substitute Parts

Part Overview

The MIC3289-16YML-TR is an active LED driver IC manufactured by Microchip Technology, classified as a Power Management PMIC. This device functions as a 1.2A step-up (boost) DC-DC regulator with integrated switching capability, designed for single-output LED backlight applications. The part is currently in active product status with 807 units available in inventory. Substitute parts are necessary when the primary part becomes unavailable, when packaging constraints require alternative form factors, or when application requirements demand different electrical characteristics such as output current capacity or supply voltage ranges.

Substiute Parts

MIC3289-16YML-TR

Microchip TechnologyIn Stock: 881MIC3289-16YML-TR Datasheet

Current PartRFQ

MIC3291-25YML-TR

Microchip TechnologyIn Stock: 2991MIC3291-25YML-TR Datasheet

Parametric EquivalentRFQ

LTC3215EDD#PBF

Analog Devices Inc.In Stock: 2219LTC3215EDD#PBF Datasheet

MFR RecommendedRFQ

MAX1848ETA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 17893MAX1848ETA+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC3289-16YML-TR is determined by the following critical parameters:

Primary Substitution Criteria:

• Topology: Step-Up (Boost) DC-DC Regulator
• Number of Outputs: 1
• Internal Switch(es): Yes
• Package Type: 8-pin surface mount (8-MLF® or equivalent 8-pin DFN/TDFN)
• Mounting Type: Surface Mount
• Applications: Backlight

Secondary Compatibility Parameters:

• Supply Voltage Range: Minimum 2.5V to 6.5V maximum (or overlapping range)
• Output Current Capacity: 1.2A or greater
• Operating Frequency: 1.2MHz (tolerance acceptable)
• Operating Temperature Range: -40°C to 125°C or compatible subset
• Compliance: ROHS3 Compliant, REACH Unaffected

Substitute parts must maintain functional equivalence in topology and output configuration. Variations in current capacity, supply voltage range, and operating temperature are acceptable provided they meet or exceed the original specification requirements.

Parameter Comparison

Engineering Selection Recommendations

MIC3291-25YML-TR (Microchip Technology) This part maintains identical electrical specifications and package form factor to the MIC3289-16YML-TR. Both devices are 8-MLF® packaged step-up regulators with 1.2A output current and 1.2MHz operating frequency. The MIC3291-25YML-TR is functionally equivalent with the same supply voltage range (2.5V to 6.5V) and operating temperature range (-40°C to 125°C). However, this part is marked as obsolete product status. Selection of this substitute is appropriate only when inventory availability is prioritized and obsolescence risk is acceptable. ROHS3 compliance and REACH unaffected status are maintained.

MAX1848ETA+T (Analog Devices Inc./Maxim Integrated) This part is an active product offering step-up boost topology with 750mA output current in an 8-pin surface mount package (8-WDFN). The supply voltage range is 2.6V to 5.5V, which overlaps with but does not fully extend to the upper limit of the original part (6.5V). Operating frequency matches at 1.2MHz. Operating temperature range is -40°C to 85°C, which is narrower than the original specification. This substitute is suitable for applications where the reduced current capacity (750mA versus 1.2A) and narrower supply voltage maximum (5.5V versus 6.5V) are acceptable. ROHS3 compliance and REACH unaffected status are maintained. Inventory availability is high at 17,800 units.

LTC3215EDD#PBF (Analog Devices Inc.) This part employs switched capacitor (charge pump) topology rather than step-up boost topology, representing a functional alternative for LED driver applications. Output current is 700mA, lower than the original 1.2A specification. Supply voltage range is 2.9V to 4.4V, which is narrower than the original part. Operating frequency is 900kHz. Operating temperature range is -40°C to 85°C. Package is 10-pin DFN (3x3), which differs from the 8-pin MLF® of the original part and requires PCB layout modification. This substitute is appropriate only when the charge pump topology is functionally acceptable for the application and when reduced current capacity and supply voltage range meet design requirements. ROHS3 compliance and REACH unaffected status are maintained.

Frequently Asked Questions (FAQ)

Q: Can MIC3291-25YML-TR be used as a direct replacement for MIC3289-16YML-TR? A: Yes, from an electrical and mechanical standpoint. Both parts share identical topology (step-up boost), output current (1.2A), frequency (1.2MHz), supply voltage range (2.5V to 6.5V), operating temperature range (-40°C to 125°C), and package form factor (8-MLF®). The primary consideration is that MIC3291-25YML-TR is marked as obsolete product status, whereas MIC3289-16YML-TR is active. Substitution is valid when long-term availability is not a constraint.

Q: Why does MAX1848ETA+T have lower output current than the original part? A: The MAX1848ETA+T is specified for 750mA output current compared to the MIC3289-16YML-TR at 1.2A. This is an inherent design characteristic of the device. Selection of this substitute requires verification that the application's LED driver current requirements do not exceed 750mA. The narrower supply voltage maximum (5.5V versus 6.5V) must also be confirmed as compatible with the power source.

Q: Is LTC3215EDD#PBF a suitable substitute despite using charge pump topology? A: LTC3215EDD#PBF uses switched capacitor (charge pump) topology instead of step-up boost topology. While both are single-output LED driver regulators, the charge pump approach has different circuit characteristics and may not be functionally equivalent in all applications. Additionally, the 700mA output current and 4.4V maximum supply voltage are lower than the original specification. This substitute is appropriate only when the application has been verified to function with charge pump topology and when current and voltage requirements are met.

Q: What are the package differences between substitute parts? A: MIC3289-16YML-TR and MIC3291-25YML-TR both use 8-MLF® (2x2) package. MAX1848ETA+T uses 8-WDFN (3x3) package, which has different pin spacing and footprint. LTC3215EDD#PBF uses 10-WFDFN (3x3) package with 10 pins instead of 8. Package differences require PCB layout modification and are not pin-compatible without redesign.

Q: Are all substitute parts RoHS3 compliant? A: Yes. MIC3291-25YML-TR, MAX1848ETA+T, and LTC3215EDD#PBF are all ROHS3 compliant and REACH unaffected, matching the compliance status of the original MIC3289-16YML-TR.

Q: What is the operating temperature difference between the original part and substitutes? A: MIC3289-16YML-TR operates from -40°C to 125°C (junction temperature). MAX1848ETA+T and LTC3215EDD#PBF both operate from -40°C to 85°C (ambient temperature). The original part has a wider high-temperature specification. Applications requiring operation above 85°C ambient temperature cannot use these substitutes.