MIC2289-34BML-TR LED Driver IC Equivalent & Substitute Parts

Part Overview

The MIC2289-34BML-TR is a LED Driver IC manufactured by Microchip Technology, classified as a Power Management PMIC. This device functions as a 1-output DC-DC regulator with Step-Up (Boost) topology, delivering 34V output with 750mA switch current and integrated PWM/Analog dimming capability for backlight applications. The part is currently discontinued at DiGi Electronics, necessitating identification of active equivalent and substitute components that maintain functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	MIC2289-34BML-TR
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Voltage Supply Range	2.5V to 10V
Voltage Output	34V
Current Output / Channel	750mA (Switch)
Frequency	1.2MHz
Dimming	Analog, PWM
Operating Temperature	-40°C to 125°C (TJ)
Package / Case	8-VFDFN Exposed Pad, 8-MLF®
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the MIC2289-34BML-TR is determined by the following critical parameters:

Primary Substitution Criteria:

Topology: Step-Up (Boost) DC-DC Regulator
Output Voltage: 34V
Switch Current: 750mA
Dimming Capability: PWM and/or Analog
Supply Voltage Range: 2.5V to 10V minimum compatibility
Package: 8-MLF® (2x2) or equivalent surface-mount form factor
Operating Temperature: -40°C to 125°C

Parametric Equivalent Parts maintain identical electrical specifications and package form factor, enabling direct substitution with no circuit modifications. These parts are sourced from the same manufacturer (Microchip Technology) and share the MIC2287/MIC2289 base product families.

Manufacturer Recommended Alternatives provide functional equivalence through different topologies or package configurations. These parts satisfy the core application requirements (LED driver, PWM dimming, backlight) but may require circuit design review due to topology differences (Step-Down vs. Step-Up) or different supply voltage ranges.

Parameter Comparison

Part Number	Manufacturer	Topology	Output Voltage	Switch Current	Supply Range (Min-Max)	Frequency	Dimming	Package	Product Status	RoHS Status
MIC2289-34BML-TR	Microchip Technology	Step-Up (Boost)	34V	750mA	2.5V - 10V	1.2MHz	Analog, PWM	8-MLF® (2x2)	Discontinued	RoHS non-compliant
MIC2287-24YML-TR	Microchip Technology	Step-Up (Boost)	24V	750mA	2.5V - 10V	1.2MHz	Analog, PWM	8-MLF® (2x2)	Active	ROHS3 Compliant
MIC2287-34YML-TR	Microchip Technology	Step-Up (Boost)	34V	750mA	2.5V - 10V	1.2MHz	Analog, PWM	8-MLF® (2x2)	Active	ROHS3 Compliant
MIC2289-24YML-TR	Microchip Technology	Step-Up (Boost)	24V	750mA	2.5V - 10V	1.2MHz	Analog, PWM	8-MLF® (2x2)	Active	ROHS3 Compliant
MIC2289-34YML-TR	Microchip Technology	Step-Up (Boost)	34V	750mA	2.5V - 10V	1.2MHz	Analog, PWM	8-MLF® (2x2)	Active	ROHS3 Compliant
A6213KLJTR-T	Allegro MicroSystems	Step-Down (Buck)	Not specified	3A	6V - 48V	Not specified	PWM	8-SOIC-EP	Active	ROHS3 Compliant
AP5724WG-7	Diodes Incorporated	Step-Up (Boost)	Not specified	750mA	2.7V - 5.5V	1.2MHz	PWM	SOT-23-6	Active	ROHS3 Compliant
AP5726WG-7	Diodes Incorporated	Step-Up (Boost)	Not specified	750mA	2.7V - 5.5V	1.2MHz	PWM	SOT-23-6	Active	ROHS3 Compliant
LM3404HVMAX/NOPB	Texas Instruments	Step-Down (Buck)	73V	1A	6V - 75V	1MHz	PWM	8-SOIC	Active	ROHS3 Compliant
LM3530TME-40/NOPB	Texas Instruments	Step-Up (Boost)	40V	30mA	2.7V - 5.5V	500kHz	PWM	12-DSBGA	Active	ROHS3 Compliant
LM3530UMX-25A/NOPB	Texas Instruments	Step-Up (Boost)	40V	30mA	2.7V - 5.5V	500kHz	PWM	12-DSBGA	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended Primary Substitutes):

MIC2287-34YML-TR and MIC2289-34YML-TR are the preferred substitutes. Both maintain identical electrical specifications (34V output, 750mA switch current, 1.2MHz frequency, Analog/PWM dimming) and package form factor (8-MLF® 2x2). Both are Active product status with ROHS3 compliance, addressing the RoHS non-compliance limitation of the discontinued MIC2289-34BML-TR. These parts require no circuit modifications and provide direct pin-compatible replacement.

Secondary Parametric Equivalents (Output Voltage Variant):

MIC2287-24YML-TR and MIC2289-24YML-TR provide identical topology, switch current, frequency, and dimming capability but deliver 24V output instead of 34V. Selection of these parts is appropriate only when application requirements permit 24V output operation.

Manufacturer Recommended Alternatives (Design Review Required):

A6213KLJTR-T (Allegro MicroSystems) and LM3404HVMAX/NOPB (Texas Instruments) employ Step-Down (Buck) topology, fundamentally different from the Step-Up (Boost) topology of the MIC2289-34BML-TR. These alternatives are suitable only for applications where input voltage exceeds desired output voltage. Both are ROHS3 compliant and Active status.

AP5724WG-7 and AP5726WG-7 (Diodes Incorporated) maintain Step-Up topology and 750mA switch current with 1.2MHz frequency but operate within 2.7V to 5.5V supply range, narrower than the MIC2289-34BML-TR specification. Output voltage is not specified in provided data. Package differs (SOT-23-6 vs. 8-MLF®).

LM3530TME-40/NOPB and LM3530UMX-25A/NOPB (Texas Instruments) provide Step-Up topology with 40V output capability but deliver only 30mA output current (versus 750mA) and operate at 500kHz frequency. These parts are suitable for lower-current backlight applications only. Package differs (12-DSBGA vs. 8-MLF®).

Frequently Asked Questions (FAQ)

Q: Can MIC2287-34YML-TR directly replace MIC2289-34BML-TR without circuit modifications?

A: Yes. MIC2287-34YML-TR is a parametric equivalent with identical output voltage (34V), switch current (750mA), supply range (2.5V-10V), frequency (1.2MHz), dimming capability (Analog/PWM), and package form factor (8-MLF® 2x2). Pin compatibility and electrical specifications enable direct substitution.

Q: What is the primary difference between MIC2287 and MIC2289 series?

A: Both series share identical electrical specifications and package form factors. The primary distinction is product status: MIC2289-34BML-TR is discontinued, while MIC2289-34YML-TR is Active with ROHS3 compliance. Selection between MIC2287 and MIC2289 variants should prioritize Active status parts with current RoHS certification.

Q: Why are Step-Down (Buck) topology parts listed as alternatives?

A: A6213KLJTR-T and LM3404HVMAX/NOPB are manufacturer-recommended alternatives for LED driver applications. Step-Down topology is appropriate when input voltage exceeds desired output voltage. These parts are not direct substitutes and require circuit redesign. Selection depends on specific application power supply architecture.

Q: Can AP5724WG-7 or AP5726WG-7 replace MIC2289-34BML-TR?

A: These Diodes Incorporated parts maintain Step-Up topology and 750mA switch current but operate within 2.7V-5.5V supply range, narrower than MIC2289-34BML-TR (2.5V-10V). Output voltage specification is not provided. Package differs (SOT-23-6 vs. 8-MLF®). Application-specific evaluation is required.

Q: Are LM3530 series parts suitable substitutes?

A: LM3530TME-40/NOPB and LM3530UMX-25A/NOPB provide Step-Up topology with 40V output but deliver only 30mA output current versus 750mA required by MIC2289-34BML-TR. These parts are suitable for lower-current backlight applications only. Package differs (12-DSBGA vs. 8-MLF®). Direct substitution is not appropriate for 750mA applications.

Q: What compliance advantage does MIC2289-34YML-TR offer over the discontinued MIC2289-34BML-TR?

A: MIC2289-34YML-TR is ROHS3 compliant, addressing the RoHS non-compliance status of the discontinued MIC2289-34BML-TR. Both maintain identical electrical and mechanical specifications. ROHS3 compliance is required for applications subject to RoHS directive requirements.

Q: How does package form factor affect substitution decisions?

A: MIC2287-34YML-TR, MIC2289-24YML-TR, and MIC2289-34YML-TR maintain the 8-MLF® (2x2) package, enabling direct PCB layout compatibility. AP5724WG-7 and AP5726WG-7 use SOT-23-6 package; LM3530 variants use 12-DSBGA package. Different packages require PCB redesign and are not pin-compatible.

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