MIC2293-34BML-TR LED Driver IC Equivalent & Substitute Parts

Part Overview

The MIC2293-34BML-TR is a LED Driver IC manufactured by Microchip Technology, classified as a Power Management PMIC. It functions as a 1-output DC DC regulator with Step-Up (Boost) topology, delivering 750mA switch current for backlight applications. The device operates across a 2.5V to 10V supply range with analog and PWM dimming capabilities at 2MHz switching frequency.

This part is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and meet evolving compliance requirements such as RoHS3 certification.

Key Parameters

Parameter	Value
Manufacturer Part Number	MIC2293-34BML-TR
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage - Supply (Min)	2.5V
Voltage - Supply (Max)	10V
Current - Output / Channel	750mA (Switch)
Frequency	2MHz
Dimming	Analog, PWM
Applications	Backlight
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	8-VFDFN Exposed Pad, 8-MLF®
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution logic for the MIC2293-34BML-TR is based on the following critical parameters:

Primary Substitution Criteria:

Topology: Step-Up (Boost) DC DC Regulator
Number of Outputs: 1
Supply Voltage Range: 2.5V to 10V minimum compatibility
Current Output: 750mA or greater switch current
Dimming Capability: Analog and/or PWM support
Package: 8-MLF® (2x2) or compatible surface mount package
Operating Temperature: -40°C to 125°C or equivalent range
Application: Backlight LED driving

Grouping Strategy:

Group 1: Microchip Technology Direct Equivalents (Same Base Product Series) Parts MIC2292-15YML-TR, MIC2293-15YML-TR, MIC2293-34YML-TR, and MIC2293C-34YML-TR share identical electrical specifications with the main part. These are parametric equivalents differing only in packaging format (Cut Tape vs. Tape & Reel) or minor product variants. All maintain the 8-MLF® package, 750mA output, 2.5V-10V supply range, and backlight application focus. RoHS3 compliance is available in these variants.

Group 2: Alternative Manufacturer Boost Regulators (Electrical Equivalents) Parts AP3032KTR-G1 (Diodes), IS31BL3506B-STLS2-TR (Lumissil), and AL3050FDC-7 (Diodes) provide Step-Up topology with comparable output current and supply voltage ranges. These maintain boost regulation for backlight applications but use different package formats (SOT-23-6 or 6-DFN) and may have frequency variations.

Group 3: Alternative Topologies and Applications (Limited Compatibility) Parts A6211GLJTR-T (Allegro, Step-Down Buck), ADP1653ACPZ-R7 (Analog Devices, Camera Flash), and BD6164GUT-E2 (ROHM, Camera Flash) represent different topologies or application focuses. These are listed as manufacturer-recommended alternatives but require circuit redesign due to topology differences (Buck vs. Boost) or specialized applications (Camera Flash vs. Backlight).

Parameter Comparison

Parameter	MIC2293-34BML-TR	MIC2292-15YML-TR	MIC2293-15YML-TR	MIC2293-34YML-TR	MIC2293C-34YML-TR	AP3032KTR-G1	IS31BL3506B-STLS2-TR
Manufacturer	Microchip	Microchip	Microchip	Microchip	Microchip	Diodes	Lumissil
Topology	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)
Number of Outputs	1	1	1	1	1	1	1
Voltage - Supply (Min)	2.5V	2.5V	2.5V	2.5V	2.5V	2.7V	2.7V
Voltage - Supply (Max)	10V	10V	10V	10V	10V	9V	5.5V
Current - Output / Channel	750mA	750mA	750mA	750mA	750mA	1.4A	2.2A
Frequency	2MHz	1.6MHz	2MHz	2MHz	2MHz	1MHz	1MHz
Dimming	Analog, PWM	Analog, PWM	Analog, PWM	Analog, PWM	Analog, PWM	PWM	Analog, PWM
Applications	Backlight	Backlight	Backlight	Backlight	Backlight	Backlight	Backlight
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-VFDFN, 8-MLF®	8-VFDFN, 8-MLF®	8-VFDFN, 8-MLF®	8-VFDFN, 8-MLF®	8-VFDFN, 8-MLF®	SOT-23-6	SOT-23-6
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Active	Active	Not For New Designs

Engineering Selection Recommendations

Tier 1: Direct Parametric Equivalents (Recommended for Immediate Replacement)

MIC2293-15YML-TR and MIC2293-34YML-TR are the primary recommended substitutes. Both maintain identical electrical specifications to the MIC2293-34BML-TR: 750mA output current, 2.5V-10V supply range, 2MHz switching frequency, analog and PWM dimming, and 8-MLF® package compatibility. The key advantage is RoHS3 compliance, addressing regulatory requirements that the original part does not meet. MIC2293-34YML-TR is available in Tape & Reel packaging (9822 pcs in stock), matching the original packaging format. MIC2293-15YML-TR is available in Cut Tape format (5300 pcs in stock).

MIC2292-15YML-TR provides an alternative within the Microchip family with identical package and supply specifications. The switching frequency is 1.6MHz instead of 2MHz, which may require minor circuit adjustments but maintains full functional compatibility for backlight applications. This part is RoHS3 compliant and has 1095 pcs in stock.

MIC2293C-34YML-TR offers the same electrical performance as MIC2293-34YML-TR with RoHS3 compliance and 1780 pcs in stock, available in Cut Tape & Digi-Reel packaging.

Tier 2: Alternative Manufacturer Boost Regulators (Functional Equivalents)

AP3032KTR-G1 (Diodes Incorporated) provides Step-Up topology with 1.4A output current, exceeding the 750mA requirement. Supply range is 2.7V-9V, which covers the original 2.5V-10V range with minor limitations at the upper end. Operating temperature is -40°C to 85°C, narrower than the original -40°C to 125°C. Package is SOT-23-6, requiring PCB layout redesign. This part is RoHS3 compliant with 218200 pcs in stock.

IS31BL3506B-STLS2-TR (Lumissil Microsystems) delivers 2.2A output current with 2.7V-5.5V supply range and 1MHz frequency. The reduced maximum supply voltage (5.5V vs. 10V) limits applicability to lower voltage systems. Package is SOT-23-6. Product status is "Not For New Designs," making it unsuitable for long-term production use despite RoHS3 compliance.

AL3050FDC-7 (Diodes Incorporated) is marked as Obsolete, making it unsuitable for new designs or sustained supply chain support.

Tier 3: Alternative Topologies (Limited Compatibility)

A6211GLJTR-T (Allegro MicroSystems) uses Step-Down (Buck) topology instead of Step-Up (Boost), requiring complete circuit redesign. Supply range is 6V-48V, incompatible with the 2.5V-10V requirement. Current output is 3A. Package is 8-SOIC-EP. This part is suitable only if the application topology can be fundamentally altered.

ADP1653ACPZ-R7 (Analog Devices) and BD6164GUT-E2 (ROHM) are specialized for camera flash applications with I2C dimming control, not backlight applications. These require application-specific circuit redesign and are not direct functional replacements.

Compliance and Availability Summary:

For new designs or production continuation, select from Tier 1 parts (MIC2293-15YML-TR or MIC2293-34YML-TR) to ensure RoHS3 compliance, maintained electrical specifications, and adequate inventory. For legacy system support where RoHS compliance is not required, the original MIC2293-34BML-TR remains the exact specification match, though supply is limited (668 pcs).

Frequently Asked Questions (FAQ)

Q: Can MIC2293-15YML-TR directly replace MIC2293-34BML-TR without circuit modifications?

A: Yes. MIC2293-15YML-TR is a parametric equivalent with identical electrical specifications: 750mA output, 2.5V-10V supply, 2MHz frequency, analog and PWM dimming, and 8-MLF® package. The difference is packaging format (Cut Tape vs. Tape & Reel). No circuit modifications are required. RoHS3 compliance is an additional benefit.

Q: What is the primary reason to substitute the MIC2293-34BML-TR?

A: The original part is discontinued at DiGi Electronics and does not meet RoHS3 compliance requirements. Microchip Technology offers direct equivalents (MIC2293-15YML-TR, MIC2293-34YML-TR, MIC2293C-34YML-TR) that maintain all electrical specifications while providing RoHS3 compliance and active product status.

Q: Can I use AP3032KTR-G1 as a substitute?

A: AP3032KTR-G1 is functionally compatible for backlight applications but requires PCB layout redesign due to different packaging (SOT-23-6 vs. 8-MLF®). The 1.4A output current exceeds the 750mA requirement, and the 2.7V-9V supply range covers most applications, though the upper limit is reduced from 10V to 9V. Operating temperature range is also narrower (-40°C to 85°C vs. -40°C to 125°C).

Q: Why are ADP1653ACPZ-R7 and BD6164GUT-E2 listed as alternatives if they are not direct replacements?

A: These parts are listed as manufacturer-recommended alternatives in the original part documentation. However, they are specialized for camera flash applications with I2C dimming control, not backlight applications. They represent different topologies and control schemes, requiring complete circuit redesign. They are not suitable for direct substitution in backlight designs.

Q: What is the difference between MIC2293-15YML-TR and MIC2293-34YML-TR?

A: Both are parametric equivalents with identical electrical specifications. The difference is packaging: MIC2293-15YML-TR is supplied in Cut Tape format (5300 pcs available), while MIC2293-34YML-TR is supplied in Tape & Reel format (9822 pcs available). Select based on your assembly process requirements.

Q: Is MIC2292-15YML-TR a suitable substitute?

A: MIC2292-15YML-TR is a suitable substitute with one specification difference: switching frequency is 1.6MHz instead of 2MHz. This may require minor circuit adjustments to output filtering and feedback compensation, but the part maintains the same 750mA output, 2.5V-10V supply range, analog and PWM dimming, and 8-MLF® package. RoHS3 compliance is provided.

Q: What is the MSL (Moisture Sensitivity Level) for these parts?

A: Microchip MIC2293 and MIC2292 variants have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Alternative manufacturer parts (Diodes, Lumissil) typically have MSL 3 (168 Hours), requiring controlled storage and handling conditions.

Q: Can I use these substitutes in applications beyond backlight?

A: The MIC2293-34BML-TR and its direct equivalents are specified for backlight applications. While the boost topology and electrical specifications may support other LED driving applications, use in non-backlight applications requires validation against specific application requirements and thermal constraints.

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