FAN5610MPX LED Driver IC Equivalent & Substitute Parts

Part Overview

The FAN5610MPX is a linear LED driver IC manufactured by onsemi, designed for 4-output PWM dimming applications with 21mA per-channel output capability. This device operates across a 2.7V to 5.5V supply range and is optimized for backlight applications in consumer electronics. The FAN5610MPX is classified as obsolete, making identification of functionally equivalent active alternatives essential for new designs and production continuity.

Substiute Parts

FAN5610MPX

onsemiIn Stock: 62170FAN5610MPX Datasheet

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A6261ELPTR-T

Allegro MicroSystemsIn Stock: 877A6261ELPTR-T Datasheet

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ADP8140ACPZ-2-R7

Analog Devices Inc.In Stock: 1145ADP8140ACPZ-2-R7 Datasheet

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LP5524TMX-5/NOPB

Texas InstrumentsIn Stock: 29364LP5524TMX-5/NOPB Datasheet

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LP5562TMX/NOPB

Texas InstrumentsIn Stock: 22394LP5562TMX/NOPB Datasheet

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MIC2841AYMT-TR

Microchip TechnologyIn Stock: 35175MIC2841AYMT-TR Datasheet

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TPS61042DRBR

Texas InstrumentsIn Stock: 23400TPS61042DRBR Datasheet

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TPS75100YFFR

Texas InstrumentsIn Stock: 6494TPS75100YFFR Datasheet

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TPS75103YFFT

Texas InstrumentsIn Stock: 1225TPS75103YFFT Datasheet

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TPS75105YFFT

Texas InstrumentsIn Stock: 2213TPS75105YFFT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FAN5610MPX is determined by the following critical parameters:

• Output Configuration: 4-channel output requirement
• Dimming Control: PWM dimming capability
• Supply Voltage Compatibility: Minimum 2.7V to 5.5V operating range
• Current Capacity: Per-channel output current of 21mA or greater
• Package Type: Surface mount with exposed pad
• Product Status: Active status preferred for long-term availability
• Thermal Performance: Operating temperature range of -40°C to 85°C or better

Substitute parts are grouped into two categories based on functional alignment:

Category A – Direct Linear PWM Replacements (Closest Compatibility) Parts with 4-channel linear topology, PWM dimming, and supply voltage ranges overlapping or exceeding 2.7V–5.5V. These include TPS75100YFFR, TPS75103YFFT, TPS75105YFFT, LP5524TMX-5/NOPB, and MIC2841AYMT-TR.

Category B – Enhanced Capability Alternatives Parts with 4-channel output and PWM dimming but with extended voltage ranges, higher current capacity, or additional dimming modes. These include A6261ELPTR-T, ADP8140ACPZ-2-R7, and LP5562TMX/NOPB.

Category C – Specialized Topology TPS61042DRBR operates as a single-output DC-DC regulator with boost topology, suitable only for applications requiring voltage step-up conversion rather than direct linear replacement.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

TPS75100YFFR, TPS75103YFFT, and TPS75105YFFT from Texas Instruments are the closest functional equivalents. All three maintain identical supply voltage range (2.7V–5.5V), 4-channel output configuration, PWM dimming, and operating temperature specifications as the FAN5610MPX. Output current is rated at 25mA per channel, exceeding the 21mA requirement. All three are active products with ROHS3 compliance and MSL 1 rating. Package differences (9-DSBGA versus 8-WDFN) require PCB layout modification but present no functional barriers.

LP5524TMX-5/NOPB from Texas Instruments offers identical electrical specifications to the TPS75100/103/105 series with active product status and extensive inventory availability (29,300 units). This part is suitable for direct substitution with PCB redesign accommodation for the 9-DSBGA package.

MIC2841AYMT-TR from Microchip Technology provides 4-channel PWM dimming with 20mA per-channel output and active product status. The supply voltage minimum is 3V (versus 2.7V for FAN5610MPX), which may limit compatibility in applications requiring operation below 3V. Operating temperature extends to 125°C, providing thermal margin. Package is 10-TMLF (2x2), requiring PCB layout changes.

Secondary Substitutes (Extended Capability)

LP5562TMX/NOPB from Texas Instruments maintains electrical compatibility with the FAN5610MPX but implements I2C dimming control instead of PWM. This substitution is valid only for applications where I2C control is acceptable or preferred. All other parameters align with primary substitutes.

A6261ELPTR-T from Allegro MicroSystems provides 4-channel PWM dimming with 100mA per-channel capacity. The supply voltage range (6V–50V) does not overlap with the FAN5610MPX minimum of 2.7V, making this part unsuitable for low-voltage applications. This substitute is applicable only for designs operating at 6V or higher.

ADP8140ACPZ-2-R7 from Analog Devices Inc. offers 4-channel output with both analog and PWM dimming modes and 500mA per-channel capacity. Supply voltage range (3V–30V) overlaps partially with FAN5610MPX (3V–5.5V overlap). Operating temperature extends to 105°C. This part is suitable for applications requiring higher current capacity and extended thermal performance, with supply voltage minimum of 3V.

Not Recommended for Direct Substitution

TPS61042DRBR is a single-output DC-DC boost regulator, fundamentally different in topology and output configuration from the FAN5610MPX. This part is not suitable as a substitute for applications requiring 4-channel linear LED driving.

Frequently Asked Questions (FAQ)

Q: Can TPS75100YFFR directly replace FAN5610MPX without circuit modification?

A: TPS75100YFFR maintains identical electrical specifications (supply voltage, output current, dimming method, temperature range) but uses a different package (9-DSBGA versus 8-WDFN). PCB layout and footprint redesign is required. No circuit topology changes are necessary.

Q: What is the key difference between TPS75100YFFR, TPS75103YFFT, and TPS75105YFFT?

A: All three parts are functionally identical in electrical specifications. Differences exist only in internal configuration or application-specific variants. Selection among these three is based on inventory availability and supplier preference.

Q: Is MIC2841AYMT-TR compatible with applications requiring 2.7V supply operation?

A: No. MIC2841AYMT-TR has a minimum supply voltage of 3V, whereas FAN5610MPX operates from 2.7V. Applications requiring operation below 3V must use TPS75100YFFR, TPS75103YFFT, TPS75105YFFT, or LP5524TMX-5/NOPB.

Q: Can LP5562TMX/NOPB replace FAN5610MPX in PWM-controlled designs?

A: LP5562TMX/NOPB implements I2C dimming control rather than PWM. Direct substitution is not compatible with PWM-based dimming circuits. This part is suitable only for designs where I2C control is implemented or can be redesigned.

Q: Why is A6261ELPTR-T not recommended as a substitute?

A: A6261ELPTR-T requires a minimum supply voltage of 6V, which exceeds the FAN5610MPX maximum of 5.5V in the lower voltage range. This part is incompatible with applications operating below 6V. It is suitable only for 6V and higher supply designs.

Q: What are the package considerations when substituting FAN5610MPX?

A: FAN5610MPX uses 8-WDFN (3x3) packaging. Most active substitutes use 9-DSBGA, 10-TMLF, 12-DSBGA, or 16-pin packages. Package changes require complete PCB footprint redesign, trace routing modification, and thermal management reassessment. Verify thermal pad connectivity and via placement for each substitute package.

Q: Is ADP8140ACPZ-2-R7 suitable for 5V applications?

A: Yes. ADP8140ACPZ-2-R7 operates across 3V–30V, which includes the 5V operating point. However, the minimum supply voltage is 3V, making it incompatible with applications requiring 2.7V operation. For applications operating at 3V–5.5V, this part is compatible.

Q: What compliance certifications apply to substitute parts?

A: All active substitute parts listed carry ROHS3 compliance and REACH Unaffected status, matching the FAN5610MPX compliance profile. Moisture sensitivity levels vary: TPS series parts are MSL 1 (Unlimited), A6261ELPTR-T is MSL 2 (1 Year), and ADP8140ACPZ-2-R7 is MSL 3 (168 Hours). Storage and handling requirements must align with the selected substitute's MSL rating.