AP2061AEC LED Driver IC Equivalent & Substitute Parts

Part Overview

The AP2061AEC is a 2-output LED driver IC manufactured by Asahi Kasei Microdevices with step-up (boost) topology, I2C dimming control, and 1A flash current capability. Designed for camera flash applications, this part operates across a 2.7V to 5.5V supply range in a compact 16-CSP package. The AP2061AEC is classified as obsolete, making equivalent and substitute parts necessary for new designs, production continuity, and long-term component availability.

Substiute Parts

AP2061AEC

Asahi Kasei Microdevices/AKMIn Stock: 982AP2061AEC Datasheet

Current PartRFQ

LM3560TLX/NOPB

Texas InstrumentsIn Stock: 3004LM3560TLX/NOPB Datasheet

MFR RecommendedRFQ

LM3646YFQR

Texas InstrumentsIn Stock: 428717LM3646YFQR Datasheet

MFR RecommendedRFQ

LT3466EDD-1#PBF

Analog Devices Inc.In Stock: 2941LT3466EDD-1#PBF Datasheet

MFR RecommendedRFQ

LT3909IMSE#PBF

Analog Devices Inc.In Stock: 1651LT3909IMSE#PBF Datasheet

MFR RecommendedRFQ

TPS61150ADRCR

Texas InstrumentsIn Stock: 2476TPS61150ADRCR Datasheet

MFR RecommendedRFQ

TPS61151DRCT

Texas InstrumentsIn Stock: 1927TPS61151DRCT Datasheet

MFR RecommendedRFQ

TPS61163AYFFR

Texas InstrumentsIn Stock: 35444TPS61163AYFFR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP2061AEC is determined by the following critical parameters:

• Topology: Step-up (boost) DC-DC regulator with internal switch
• Output Configuration: 2 outputs
• Supply Voltage Range: Minimum 2.5V to 2.7V; Maximum 5.5V
• Flash Current Capability: 1A or higher per channel
• Dimming Control: I2C or PWM control methods
• Primary Application: Camera flash or backlight LED driving
• Operating Temperature: -40°C to 85°C or wider range
• Package Type: Surface mount (CSP, DSBGA, VSON, or DFN variants)

Substitute parts are grouped into two categories based on dimming control method and current rating:

Category A - I2C Dimming (Direct Functional Equivalents): Parts with I2C control matching the original dimming interface, suitable for direct replacement in camera flash applications.

Category B - PWM/Analog Dimming (Functional Alternatives): Parts with PWM or analog dimming control, requiring design modification but offering active product status and wider availability.

Parameter Comparison

Engineering Selection Recommendations

For Direct I2C Replacement (Camera Flash Applications)

LM3560TLX/NOPB is the primary recommended substitute. It maintains I2C dimming control, 2-output configuration, and 1A flash current capability. Operating temperature extends to -40°C (5°C lower than original), and the part is in active production status with ROHS3 compliance. The 16-DSBGA package (2.5x2.12mm) is slightly larger than the original 16-CSP but remains surface-mount compatible. This part is suitable for direct functional replacement with minimal design modification.

For Enhanced Current Capability

LM3646YFQR provides 1.5A flash current with I2C control and 2 outputs, offering 50% higher current capacity than the original. Operating temperature range extends to -40°C. The 20-DSBGA package is larger (2.04x1.78mm) and requires PCB layout adjustment. Product status is obsolete, limiting long-term availability.

For PWM-Controlled Designs (Backlight Applications)

TPS61163AYFFR offers active product status, ROHS3 compliance, and analog/PWM dimming flexibility. The 9-DSBGA package is compact, and the part supports output voltage range of 2.7V to 38V. Current output is 30mA per channel, suitable for backlight applications rather than high-current flash. This selection requires firmware modification to implement PWM dimming instead of I2C control.

LT3466EDD-1#PBF and LT3909IMSE#PBF are active alternatives with extended supply voltage ranges (up to 24V and 40V respectively) and PWM/analog dimming. These parts are suitable for applications requiring higher input voltage tolerance or automotive-grade specifications (LT3909IMSE#PBF includes automotive grade). Current outputs are lower (400mA and 50mA respectively), limiting use to lower-power LED applications.

Compliance and Availability Considerations

All recommended substitutes carry ROHS3 compliance and REACH unaffected status. Moisture sensitivity levels range from MSL 1 (unlimited shelf life) to MSL 2 (1-year shelf life). Active product status parts (LM3560TLX/NOPB, LT3466EDD-1#PBF, LT3909IMSE#PBF, TPS61150ADRCR, TPS61151DRCT, TPS61163AYFFR) provide superior long-term availability and supply chain stability compared to obsolete alternatives.

Frequently Asked Questions (FAQ)

Q: Can LM3560TLX/NOPB directly replace AP2061AEC without design changes?

A: LM3560TLX/NOPB maintains functional equivalence in topology, output count, I2C dimming control, and flash current rating. The package footprint differs (16-DSBGA vs. 16-CSP), requiring PCB layout modification. Firmware compatibility depends on I2C command set alignment; verification against datasheets is necessary.

Q: Why do some substitutes have lower current ratings (30mA to 400mA) compared to the original 1A?

A: Lower-current parts (TPS61150ADRCR, TPS61151DRCT, TPS61163AYFFR, LT3909IMSE#PBF) are optimized for backlight LED applications rather than camera flash. Camera flash requires sustained 1A output; backlight applications typically operate at milliamp levels. Selection depends on application requirements.

Q: What is the difference between I2C and PWM dimming control?

A: I2C dimming uses digital communication protocol for brightness control, as implemented in AP2061AEC and LM3560TLX/NOPB. PWM dimming uses pulse-width modulation frequency to control brightness. Switching between control methods requires firmware modification and different control circuitry.

Q: Are all substitute parts RoHS compliant?

A: All listed substitutes carry ROHS3 compliance certification. The original AP2061AEC does not specify RoHS status. ROHS3 compliance ensures lead-free construction and compliance with EU environmental directives.

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

A: MSL indicates maximum shelf life under specified humidity conditions. MSL 1 (unlimited) parts have no shelf-life restrictions. MSL 2 (1 year) parts require controlled storage and must be used within one year of manufacture. For long-term inventory, MSL 1 parts are preferred.

Q: Can LM3646YFQR be used in place of AP2061AEC for higher current applications?

A: LM3646YFQR provides 1.5A flash current (50% higher than original 1A) with I2C control and 2 outputs. The 20-DSBGA package requires PCB redesign. Product status is obsolete, limiting future availability. Use only if higher current is required and long-term supply is not critical.

Q: Which substitute offers the best long-term availability?

A: LM3560TLX/NOPB, LT3466EDD-1#PBF, LT3909IMSE#PBF, TPS61150ADRCR, TPS61151DRCT, and TPS61163AYFFR all carry active product status. Among these, LM3560TLX/NOPB is the closest functional equivalent for camera flash applications. TPS61163AYFFR offers the most compact package (9-DSBGA) with active status for backlight designs.

Q: What package considerations apply when switching from AP2061AEC to substitutes?

A: AP2061AEC uses 16-CSP (1.56x1.56mm). Substitutes use DSBGA, VSON, DFN, or MSOP packages with different footprints and pin configurations. PCB layout, trace routing, and thermal management may require adjustment. Consult package datasheets for pinout and thermal pad specifications before layout redesign.