AP3039AMTR-G1 Equivalent & Substitute Parts

Part Overview

The AP3039AMTR-G1 is an LED Driver IC manufactured by Diodes Incorporated, classified as a Power Management (PMIC) device. This single-output DC DC controller implements a Step-Up (Boost) topology operating at 1MHz, designed for LED backlight applications. The device accepts supply voltages between 5V and 27V and operates across the industrial temperature range of -40°C to 85°C.

The AP3039AMTR-G1 is currently marked as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this controller.

Substiute Parts

AP3039AMTR-G1

Diodes IncorporatedIn Stock: 57877AP3039AMTR-G1 Datasheet

Current PartRFQ

BD9488F-GE2

Rohm SemiconductorIn Stock: 33193BD9488F-GE2 Datasheet

MFR RecommendedRFQ

HV9861ANG-G

Microchip TechnologyIn Stock: 5078HV9861ANG-G Datasheet

MFR RecommendedRFQ

HVLED001ATR

STMicroelectronicsIn Stock: 25400HVLED001ATR Datasheet

MFR RecommendedRFQ

LT3755EUD-1#PBF

Analog Devices Inc.In Stock: 2182LT3755EUD-1#PBF Datasheet

MFR RecommendedRFQ

LT3763HFE#PBF

Analog Devices Inc.In Stock: 2257LT3763HFE#PBF Datasheet

MFR RecommendedRFQ

LT8391IUFD#TRPBF

Analog Devices Inc.In Stock: 885LT8391IUFD#TRPBF Datasheet

MFR RecommendedRFQ

RT8494GS

Richtek USA Inc.In Stock: 1045RT8494GS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP3039AMTR-G1 is determined by the following critical parameters:

• Topology: Step-Up (Boost) or multi-topology controllers supporting Step-Up (Boost) operation
• Supply Voltage Range: Minimum 5V input capability; maximum 27V or higher
• Frequency: Operating frequency at or near 1MHz
• Package Compatibility: 14-SOIC or equivalent surface-mount packages
• Application Suitability: LED driver controllers for backlight applications
• Compliance: ROHS3 compliance and industrial temperature range support

Substitute parts are grouped into two categories:

Category A - Direct Topology Match (Step-Up Boost Primary): Parts with Step-Up (Boost) as primary topology and compatible voltage ranges.

Category B - Multi-Topology Support: Parts supporting Step-Up (Boost) among multiple topologies, offering broader design flexibility.

Parameter Comparison

Engineering Selection Recommendations

BD9488F-GE2 (Rohm Semiconductor): Provides Step-Up (Boost) topology with supply range 9V–18V, overlapping the upper portion of the AP3039AMTR-G1 input range. Marked as Not For New Designs; suitable for legacy system support only. 18-SOIC package requires PCB layout modification.

HV9861ANG-G (Microchip Technology): Active product with extended temperature range (-40°C to 125°C) and high supply voltage capability (15V–450V). Topology is Step-Down (Buck), not Step-Up (Boost); unsuitable for direct replacement in boost-only designs. 16-SOIC package is compatible with board layout.

HVLED001ATR (STMicroelectronics): Active product supporting multiple topologies including Step-Up (Boost). Supply range 8.8V–16.5V covers mid-range operation. 10-SOP package is smaller than the original 14-SOIC, requiring PCB redesign. Moisture sensitivity level MSL-3 requires controlled storage.

LT3755EUD-1#PBF (Analog Devices Inc.): Active product with multi-topology support (Flyback, SEPIC, Buck, Boost). Supply range 4.5V–40V exceeds original specifications. Frequency range 100kHz–1MHz includes 1MHz operation. 16-QFN (3x3) package requires surface-mount assembly adjustment. Operating temperature 0°C–125°C does not extend below -40°C.

LT3763HFE#PBF (Analog Devices Inc.): Active product with Step-Down (Buck) topology only; does not support Step-Up (Boost) operation. Unsuitable for direct replacement.

LT8391IUFD#TRPBF (Analog Devices Inc.): Active product with Buck and Boost topology support. Supply range 4V–60V exceeds original specifications. Frequency range 150kHz–650kHz includes 1MHz operation capability. 28-QFN (4x5) package is significantly larger, requiring PCB redesign. Automotive grade qualification (AEC-Q100 equivalent) provides enhanced reliability.

RT8494GS (Richtek USA Inc.): Active product with Buck and Boost topology support. Supply range 4.5V–36V covers original specifications. Frequency range 100kHz–1MHz includes 1MHz operation. 14-SOP package matches original form factor. Automotive grade with AEC-Q100 qualification. Moisture sensitivity MSL-3 requires controlled storage.

For legacy system support with minimal redesign, RT8494GS offers the closest electrical and mechanical compatibility. For new designs requiring extended capabilities, LT8391IUFD#TRPBF provides automotive-grade reliability with multi-topology flexibility.

Frequently Asked Questions (FAQ)

Q: Can BD9488F-GE2 directly replace AP3039AMTR-G1 without circuit modification?

A: No. BD9488F-GE2 has a minimum supply voltage of 9V, which excludes the 5V–9V operating range of the AP3039AMTR-G1. Additionally, the 18-SOIC package differs from the 14-SOIC original, requiring PCB layout changes.

Q: Why is HV9861ANG-G listed if it uses Step-Down (Buck) topology?

A: HV9861ANG-G is included for reference as an active LED driver controller from a major manufacturer. However, its Step-Down (Buck) topology makes it unsuitable for applications requiring Step-Up (Boost) operation. Design topology requirements must be verified before selection.

Q: What is the significance of product status (Active vs. Not For New Designs vs. Obsolete)?

A: Product status indicates manufacturer support and availability. Active products receive ongoing manufacturing and technical support. Not For New Designs indicates the manufacturer is phasing out the product but may still supply existing inventory. Obsolete products have been discontinued and are available only through secondary sources.

Q: Does LT3755EUD-1#PBF operate at exactly 1MHz like the AP3039AMTR-G1?

A: LT3755EUD-1#PBF supports a frequency range of 100kHz–1MHz, which includes 1MHz operation. However, the actual operating frequency is typically set by external components and design configuration. Verify frequency selection capability in the device datasheet.

Q: Why do some substitute parts have larger packages (28-QFN vs. 14-SOIC)?

A: Larger packages typically provide improved thermal performance and additional functionality. LT8391IUFD#TRPBF and LT3763HFE#PBF use larger packages to accommodate additional control features and integrated protection circuits. Package selection depends on PCB space availability and thermal requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the environmental compliance of the AP3039AMTR-G1.

Q: What does Moisture Sensitivity Level (MSL) mean for component handling?

A: MSL indicates the maximum time a component can be exposed to ambient conditions (typically 30°C, 85% relative humidity) before soldering. MSL-1 (Unlimited) allows indefinite storage. MSL-3 (168 Hours) requires controlled storage and baking before assembly. Components with MSL-3 require special handling procedures.

Q: Can RT8494GS be used as a direct pin-compatible replacement?

A: RT8494GS uses the same 14-SOP package as the AP3039AMTR-G1, but pin-for-pin compatibility must be verified against detailed pinout diagrams. Electrical characteristics differ; circuit validation is required before deployment.