PAM2812ABR LED Driver IC Equivalent & Substitute Parts

Part Overview

The PAM2812ABR is a linear LED driver IC manufactured by Diodes Incorporated, designed for 4-output PWM dimming applications with a maximum output current of 20mA per channel. The device operates across a 2.7V to 5.5V supply voltage range and is housed in a TSOT-23-6 surface mount package. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

PAM2812ABR

Diodes IncorporatedIn Stock: 18715PAM2812ABR Datasheet

Current PartRFQ

A6262KLYTR-T

Allegro MicroSystemsIn Stock: 1442A6262KLYTR-T Datasheet

MFR RecommendedRFQ

MAX7307AUB+T

Analog Devices Inc./Maxim IntegratedIn Stock: 771MAX7307AUB+T Datasheet

MFR RecommendedRFQ

TPS75100DSKR

Texas InstrumentsIn Stock: 5935TPS75100DSKR Datasheet

MFR RecommendedRFQ

TPS75100YFFR

Texas InstrumentsIn Stock: 6494TPS75100YFFR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PAM2812ABR is determined by the following critical parameters:

• Number of Outputs: Must be 4 channels
• Dimming Control Method: PWM or I2C control capability
• Supply Voltage Range: Minimum 2.7V to 5.5V maximum (or compatible overlap)
• Output Current per Channel: 20mA or greater
• Package Type: Surface mount configuration
• Product Status: Active status preferred for long-term availability
• Compliance: ROHS3 compliance maintained

The substitute parts identified fall into two functional categories: PWM-controlled linear drivers with higher current ratings (A6262KLYTR-T, TPS75100DSKR, TPS75100YFFR) and I2C-controlled alternatives (MAX7307AUB+T). All candidates maintain the 4-output architecture and linear topology of the original device.

Parameter Comparison

Engineering Selection Recommendations

TPS75100DSKR and TPS75100YFFR (Texas Instruments) are the most direct functional replacements for the PAM2812ABR. Both maintain identical supply voltage specifications (2.7V to 5.5V), PWM dimming control, 4-output architecture, and operating temperature range (-40°C to 85°C). The TPS75100 series offers 25mA per channel output current, exceeding the original 20mA specification. Both variants are active products with ROHS3 compliance and MSL-1 ratings. Selection between DSKR (10-SON package) and YFFR (9-DSBGA package) depends on PCB layout and assembly process compatibility.

MAX7307AUB+T (Analog Devices/Maxim Integrated) provides an alternative with I2C dimming control instead of PWM. This device operates at a lower supply voltage minimum (1.62V) and extends the maximum operating temperature to 125°C. The I2C interface requires firmware modification compared to PWM-based designs. This part is suitable for applications requiring digital control and extended temperature operation.

A6262KLYTR-T (Allegro MicroSystems) offers significantly higher output current (100mA per channel) and extended supply voltage range (6V to 50V), making it suitable only for applications requiring higher current delivery or wider voltage operation. This part includes automotive-grade qualification (AEC-Q100) and extended temperature range (-40°C to 125°C). The 10-MSOP-EP package differs from the original TSOT-23-6 footprint.

All substitute candidates maintain ROHS3 compliance and are currently in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can TPS75100DSKR directly replace PAM2812ABR without PCB modifications?

A: The TPS75100DSKR maintains electrical compatibility within the 2.7V to 5.5V supply range and PWM dimming control. However, the package differs (10-SON versus TSOT-23-6), requiring PCB layout changes. Pin configuration must be verified against datasheets before implementation.

Q: What is the primary advantage of MAX7307AUB+T over PWM-based alternatives?

A: The MAX7307AUB+T provides I2C digital control, enabling programmable dimming levels and multi-device addressing on a single bus. This approach reduces PCB routing complexity for PWM signal distribution in systems with multiple LED drivers. The lower supply voltage minimum (1.62V) also supports battery-powered applications.

Q: Is the A6262KLYTR-T suitable for direct replacement in low-current backlight applications?

A: The A6262KLYTR-T exceeds the original specification with 100mA per channel output current and 6V to 50V supply range. While electrically compatible for low-current operation, the higher current rating and wider voltage range indicate design targeting industrial lighting rather than backlight applications. The automotive qualification (AEC-Q100) adds cost without benefit for non-automotive backlight designs.

Q: What are the package considerations when selecting a substitute?

A: The PAM2812ABR uses a 6-pin TSOT-23-6 package. Substitute options include 10-pin packages (TPS75100DSKR in 10-SON, A6262KLYTR-T in 10-MSOP-EP, MAX7307AUB+T in 10-uMAX-EP) and 9-pin BGA (TPS75100YFFR in 9-DSBGA). Package selection impacts PCB footprint, assembly process, and thermal management. Verify PCB design constraints before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts (A6262KLYTR-T, MAX7307AUB+T, TPS75100DSKR, TPS75100YFFR) maintain ROHS3 compliance, matching the original PAM2812ABR specification.

Q: What is the difference between TPS75100DSKR and TPS75100YFFR?

A: Both are Texas Instruments TPS75100 variants with identical electrical specifications. The primary difference is packaging: DSKR uses a 10-SON (2.5x2.5mm) surface mount package, while YFFR uses a 9-DSBGA ball grid array package. Selection depends on PCB assembly capabilities and thermal requirements.