MIC2287C-34BML-TR LED Driver IC Equivalent & Substitute Parts

Part Overview

The MIC2287C-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 750mA switch current with integrated PWM and analog dimming capabilities for backlight applications. The part is 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	Microchip Technology
Part Number	MIC2287C-34BML-TR
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Package	8-VFDFN Exposed Pad, 8-MLF® (2x2)
Supply Voltage Range	2.5V to 10V
Output Current	750mA (Switch)
Switching Frequency	1.2MHz
Dimming Capability	Analog, PWM
Operating Temperature	-40°C to 105°C (TJ)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the MIC2287C-34BML-TR is determined by the following critical parameters:

Primary Substitution Criteria:

Topology: Step-Up (Boost) DC-DC Regulator
Output Current Capability: 750mA (Switch)
Supply Voltage Range: 2.5V to 10V minimum compatibility
Switching Frequency: 1.2MHz nominal
Dimming Support: PWM and/or Analog capability
Package Type: Surface Mount (8-MLF® or equivalent footprint)
Number of Outputs: Single output configuration

Substitution Categories:

Category 1: Parametric Equivalents (Microchip MIC2287 Series) Parts MIC2287C-15YML-TR and MIC2287C-24YML-TR maintain identical electrical specifications and package footprint as the main part. These variants differ only in output voltage configuration and product status (Active vs. Discontinued). Both support the full parameter set required for direct substitution.

Category 2: Manufacturer-Recommended Alternatives (Diodes Incorporated) Parts AP5724WG-7 and AP5725WG-7 provide Step-Up (Boost) topology with 750mA output current and PWM dimming. These parts operate within a narrower supply voltage range (2.7V to 5.5V) and use SOT-26 packaging, requiring PCB layout modification. AP5725WG-7 specifies 26V output voltage.

Category 3: Manufacturer-Recommended Alternatives (ROHM & Texas Instruments) Parts BD60910GU-E2, AP8801SG-13, LM3406MHX/NOPB, LM3530TME-40/NOPB, LM3530UMX-25A/NOPB, and LM3565TLE/NOPB represent alternatives with topology or current rating variations. These parts address specific application requirements but deviate from one or more primary substitution criteria.

Parameter Comparison

Parameter	MIC2287C-34BML-TR	MIC2287C-15YML-TR	MIC2287C-24YML-TR	AP5724WG-7	AP5725WG-7	LM3530TME-40/NOPB	LM3530UMX-25A/NOPB
Manufacturer	Microchip	Microchip	Microchip	Diodes Inc.	Diodes Inc.	Texas Instruments	Texas Instruments
Topology	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)
Supply Voltage (Min)	2.5V	2.5V	2.5V	2.7V	2.7V	2.7V	2.7V
Supply Voltage (Max)	10V	10V	10V	5.5V	5.5V	5.5V	5.5V
Output Current	750mA	750mA	750mA	750mA	750mA	30mA	30mA
Switching Frequency	1.2MHz	1.2MHz	1.2MHz	1.2MHz	1.2MHz	500kHz	500kHz
Dimming	Analog, PWM	Analog, PWM	Analog, PWM	PWM	PWM	PWM	PWM
Package	8-MLF® (2x2)	8-MLF® (2x2)	8-MLF® (2x2)	SOT-26	SOT-26	12-DSBGA	12-DSBGA
Operating Temp	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitution (Preferred): MIC2287C-15YML-TR and MIC2287C-24YML-TR are the primary substitutes. Both maintain identical electrical specifications, package footprint, and functional characteristics. Both parts are Active status with ROHS3 compliance, providing regulatory advantage over the discontinued MIC2287C-34BML-TR. No PCB layout modification is required.

Alternative Substitution (Package Change Required): AP5724WG-7 and AP5725WG-7 provide functional equivalence with identical output current (750mA) and switching frequency (1.2MHz). These parts require PCB redesign due to SOT-26 packaging versus 8-MLF®. Supply voltage range is restricted to 2.7V–5.5V, limiting compatibility with applications requiring the full 2.5V–10V input range of the original part. Both are Active status with ROHS3 compliance.

Limited Substitution (Current Rating Reduction): LM3530TME-40/NOPB and LM3530UMX-25A/NOPB deliver only 30mA output current versus the required 750mA, making these unsuitable for direct substitution in applications requiring full current capacity. These parts are appropriate only for low-power backlight applications with reduced current demands.

Compliance Consideration: All recommended substitutes except the original part carry ROHS3 compliance certification, providing environmental and regulatory advantage for new designs and procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can MIC2287C-15YML-TR or MIC2287C-24YML-TR be used as direct drop-in replacements? A: Yes. Both parts maintain identical electrical specifications, switching frequency, dimming capability, and 8-MLF® package footprint. No circuit modification or PCB redesign is required. Both are Active status components.

Q: What is the key difference between MIC2287C-15YML-TR and MIC2287C-24YML-TR? A: The primary difference is output voltage configuration. MIC2287C-15YML-TR is configured for 15V output, while MIC2287C-24YML-TR is configured for 24V output. Both maintain identical input voltage range (2.5V–10V), output current (750mA), and switching frequency (1.2MHz).

Q: Why do AP5724WG-7 and AP5725WG-7 require PCB modification? A: These parts use SOT-26 packaging instead of the 8-MLF® package of the original part. PCB layout and footprint must be redesigned. Additionally, the supply voltage range is restricted to 2.7V–5.5V, which may not accommodate applications requiring operation down to 2.5V input.

Q: Are LM3530 series parts suitable substitutes? A: LM3530TME-40/NOPB and LM3530UMX-25A/NOPB are not suitable for direct substitution. These parts deliver only 30mA output current compared to the required 750mA. They are appropriate only for low-power backlight applications with significantly reduced current requirements.

Q: What compliance advantage do the substitute parts offer? A: All recommended substitute parts carry ROHS3 compliance certification, whereas the original MIC2287C-34BML-TR is RoHS non-compliant. This provides regulatory and environmental advantage for new procurement and design cycles.

Q: Can the original part be used if inventory is available? A: The MIC2287C-34BML-TR is discontinued at DiGi Electronics. While existing inventory may be available through alternative distributors, using an Active status substitute ensures long-term supply chain reliability and regulatory compliance.

Q: What is the operating temperature difference between the original and substitute parts? A: The original part operates from -40°C to 105°C (junction temperature). Most substitute parts operate from -40°C to 85°C (ambient temperature). Applications requiring operation above 85°C ambient or 105°C junction temperature must verify thermal performance with the selected substitute.

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