BD6061GUT-E2 LED Driver IC Equivalent & Substitute Parts

Part Overview

The BD6061GUT-E2 is a LED Driver IC manufactured by Rohm Semiconductor, classified as a Power Management PMIC. This device functions as a 1-output DC-DC regulator with step-up (boost) topology, delivering 18V output at 270mA switch current for backlight applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production support and design continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	BD6061GUT-E2
Manufacturer	Rohm Semiconductor
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage - Supply (Min)	2.7V
Voltage - Supply (Max)	5.5V
Voltage - Output	18V
Current - Output / Channel	270mA (Switch)
Frequency	1MHz
Internal Switch(s)	Yes
Applications	Backlight
Operating Temperature	-30°C ~ 85°C (TA)
Package / Case	8-WFBGA, CSPBGA
Supplier Device Package	VCSP60N1
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the BD6061GUT-E2 is determined by the following critical parameters:

Primary Substitution Criteria:

Topology: Step-Up (Boost) DC-DC Regulator
Number of Outputs: 1
Voltage Supply Range: Minimum 2.7V, Maximum 5.5V
Output Voltage: 18V
Current Capacity: 270mA (Switch)
Operating Frequency: 1MHz
Internal Switch: Required
Application: Backlight
Operating Temperature Range: -30°C to 85°C minimum

Parametric Equivalent: The BD6069GUT-E2 is a parametric equivalent sharing identical electrical specifications and the same VCSP60N1 package, differing only in base product number designation.

Similar Substitutes: The following parts meet core functional requirements but differ in one or more parameters (package type, current rating, supply voltage range, or topology variation). Selection depends on specific circuit requirements and PCB layout constraints.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Min (V)	Supply Max (V)	Output (V)	Current (mA)	Frequency (MHz)	Package	Status
BD6061GUT-E2	Rohm Semiconductor	Step-Up (Boost)	2.7	5.5	18	270	1	VCSP60N1	Obsolete
BD6069GUT-E2	ROHM Semiconductor	Step-Up (Boost)	2.7	5.5	18	270	1	VCSP60N1	Obsolete
MP1518DJ-LF-Z	Monolithic Power Systems Inc.	Step-Up (Boost)	2.5	6	25	350	1.3	TSOT-23-6	Active
LM2704MF-ADJ/NOPB	Texas Instruments	Step-Up (Boost)	2.2	7	20	550	—	SOT-23-5	Active
LM2705MFX-ADJ/NOPB	Texas Instruments	Step-Up (Boost)	2.2	7	20	150	—	SOT-23-5	Active
LT3477IFE#PBF	Analog Devices Inc.	Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)	2.5	25	—	3000	0.2–4.6	20-TSSOP-EP	Active
MIC3289-24YML-TR	Microchip Technology	Step-Up (Boost)	2.5	6.5	—	1200	1.2	8-MLF® (2x2)	Active
MP4689DN-LF-Z	Monolithic Power Systems Inc.	Step-Down (Buck)	4.5	95	—	1000	1	8-SOIC-EP	Not For New Designs
A6217KLJTR-1-T	Allegro MicroSystems	Step-Down (Buck)	6	48	—	1500	—	8-SOIC-EP	Active
MP2483DS-LF-Z	Monolithic Power Systems Inc.	Step-Down (Buck), Step-Up (Boost)	4.5	55	—	2500	0.5	14-SOIC	Active
MP4033GK-Z	Monolithic Power Systems Inc.	Flyback	11	27	—	—	—	10-MSOP	Active

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): BD6069GUT-E2 is the recommended direct replacement for BD6061GUT-E2. Both parts share identical electrical specifications, operating parameters, and VCSP60N1 package. Both are obsolete products; however, BD6069GUT-E2 maintains higher inventory availability (20,384 pcs vs. 35,200 pcs for BD6061GUT-E2).

Active Substitutes for New Designs: For new designs or long-term production, the following active-status parts are recommended based on topology and application alignment:

MP1518DJ-LF-Z (Monolithic Power Systems Inc.) provides the closest functional match with step-up boost topology, 1-output configuration, and backlight application support. Supply voltage range (2.5V–6V) overlaps the BD6061GUT-E2 specification. Output current (350mA) exceeds the original 270mA requirement. Package differs (TSOT-23-6 vs. VCSP60N1), requiring PCB redesign.

LM2704MF-ADJ/NOPB (Texas Instruments) offers step-up boost topology with 550mA output current and 20V output voltage. Supply range (2.2V–7V) accommodates the original specification. SOT-23-5 package requires layout modification.

MIC3289-24YML-TR (Microchip Technology) provides step-up boost topology with 1.2MHz frequency matching the original 1MHz specification. Supply range (2.5V–6.5V) overlaps the BD6061GUT-E2. Output current (1.2A) significantly exceeds 270mA requirement. 8-MLF package differs from VCSP60N1.

Topology Variants: MP2483DS-LF-Z and MP4689DN-LF-Z support both step-down and step-up topologies, offering design flexibility. These parts are suitable only if circuit topology can be modified to accommodate buck-boost operation.

LT3477IFE#PBF (Analog Devices Inc.) supports multiple topologies (Flyback, SEPIC, Buck, Boost) with 3A switch current and wide supply range (2.5V–25V). This part accommodates diverse application requirements but requires circuit redesign.

Compliance and Certification: All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original BD6061GUT-E2 certifications. MP2483DS-LF-Z and MP4689DN-LF-Z carry automotive-grade qualification (AEC-Q100), suitable for automotive backlight applications. A6217KLJTR-1-T includes automotive qualification with -40°C to 125°C operating range, exceeding the original -30°C to 85°C specification.

Frequently Asked Questions (FAQ)

Q: Can BD6069GUT-E2 be used as a direct replacement for BD6061GUT-E2? A: Yes. BD6069GUT-E2 is a parametric equivalent with identical electrical specifications, output voltage (18V), current rating (270mA), supply voltage range (2.7V–5.5V), and VCSP60N1 package. No circuit modifications are required.

Q: Why do substitute parts have different output voltages or current ratings? A: The BD6061GUT-E2 is obsolete. Active substitutes are designed for broader application ranges. Parts like MP1518DJ-LF-Z (25V output, 350mA) and LM2704MF-ADJ/NOPB (20V output, 550mA) provide higher performance margins. Circuit design must verify that higher output voltage and current do not exceed application requirements.

Q: Which substitute is best for backlight applications? A: MP1518DJ-LF-Z and LM2704MF-ADJ/NOPB are explicitly rated for backlight applications with step-up boost topology. Both support PWM and analog dimming. MP1518DJ-LF-Z operates at 1.3MHz (close to the original 1MHz), while LM2704MF-ADJ/NOPB provides higher current capacity (550mA vs. 270mA).

Q: What is the impact of package differences? A: The original BD6061GUT-E2 uses VCSP60N1 (8-WFBGA, CSPBGA) package. Substitutes use different packages (TSOT-23-6, SOT-23-5, 8-MLF, 8-SOIC-EP, 20-TSSOP-EP, 10-MSOP). Package changes require PCB layout redesign, including trace routing, thermal management, and component placement. Verify thermal performance and signal integrity for the selected package.

Q: Can I use MP4689DN-LF-Z or A6217KLJTR-1-T as substitutes? A: These parts use step-down (buck) topology, not step-up (boost). They are suitable only if circuit design can be modified to accommodate buck regulation. Supply voltage requirements also differ (MP4689DN-LF-Z: 4.5V–95V; A6217KLJTR-1-T: 6V–48V), which may not align with the original 2.7V–5.5V specification.

Q: Are there supply chain advantages to selecting specific substitutes? A: MP1518DJ-LF-Z has the highest inventory availability (57,868 pcs), followed by MP2483DS-LF-Z (63,800 pcs). These active-status parts offer better long-term supply security compared to obsolete alternatives. BD6069GUT-E2 (20,384 pcs) provides the closest functional match with moderate availability.

Q: What compliance certifications should I verify? A: All listed substitutes maintain ROHS3 compliance and REACH unaffected status. For automotive applications, MP2483DS-LF-Z, MP4689DN-LF-Z, and A6217KLJTR-1-T carry AEC-Q100 automotive qualification. Verify that selected substitute meets your application's regulatory and environmental requirements.

Q: How do I determine if a substitute's higher current rating is acceptable? A: Higher current ratings (e.g., MP1518DJ-LF-Z at 350mA vs. 270mA original) indicate greater capacity but do not automatically require circuit changes. Verify that the substitute's output voltage matches or exceeds application requirements and that thermal dissipation remains within acceptable limits. Consult the substitute's datasheet for current limiting and thermal management specifications.

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