PCA9622DR,118 LED Driver IC - Equivalent & Substitute Parts

Part Overview

The PCA9622DR,118 is a 16-output linear PWM LED driver IC manufactured by NXP USA Inc., designed for backlight applications with 100mA per-channel output capability. This component operates across a 2.3V to 5.5V supply range and features internal switching with PWM dimming control at frequencies between 100kHz and 1MHz. The part is classified as obsolete, making identification of active equivalent alternatives essential for new designs and production continuity.

Substiute Parts

PCA9622DR,118

NXP USA Inc.In Stock: 3323PCA9622DR,118 Datasheet

Current PartRFQ

PCA9955BTWJ

NXP SemiconductorsIn Stock: 2732PCA9955BTWJ Datasheet

MFR RecommendedRFQ

MIC5400YWM-TR

Microchip TechnologyIn Stock: 853MIC5400YWM-TR Datasheet

MFR RecommendedRFQ

TLC59116IPWR

Texas InstrumentsIn Stock: 17506TLC59116IPWR Datasheet

MFR RecommendedRFQ

TLC5923RHBR

Texas InstrumentsIn Stock: 353810TLC5923RHBR Datasheet

MFR RecommendedRFQ

TLC5944PWP

Texas InstrumentsIn Stock: 1049TLC5944PWP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PCA9622DR,118 is determined by the following critical parameters:

• Number of Outputs: Must be 16 channels
• Type: Linear LED driver architecture
• Internal Switching: Required
• Supply Voltage Range: Minimum 2.3V to 5.5V maximum (or subset thereof)
• Output Current Capability: Per-channel current rating must meet or exceed application requirements
• Dimming Control Method: PWM or I2C-based dimming
• Package Compatibility: Surface mount packages with compatible pinout and thermal characteristics
• Product Status: Active alternatives preferred for new designs
• Compliance: ROHS3 and REACH compliance maintained

The following substitute parts meet these criteria with varying trade-offs in output current, package form factor, and control interface.

Parameter Comparison

Engineering Selection Recommendations

TLC59116IPWR (Texas Instruments) is the primary recommended substitute. This part maintains active product status, offers 120mA per-channel output (exceeding the original 100mA specification), operates across the 3V to 5.5V supply range, and provides I2C-based dimming control. The 28-TSSOP package requires PCB layout modification from the original 32-TSSOP footprint. ROHS3 compliance and MSL-1 rating match the original part's environmental specifications.

TLC5923RHBR (Texas Instruments) provides an alternative with 80mA per-channel output in a 32-VQFN package, maintaining the 16-output configuration and active product status. This part features shift register control topology and operates across 3V to 5.5V. The 32-pin VQFN form factor differs from the original TSSOP package, requiring significant PCB redesign.

PCA9955BTWJ (NXP Semiconductors) offers continuity within the NXP product family with 65mA per-channel output and active product status. The 28-TSSOP package requires layout modification. Supply voltage range is 3V to 5.5V, with MSL-1 rating matching the original specification.

TLC5944PWP (Texas Instruments) provides 60mA per-channel output with shift register topology in a 28-PowerTSSOP package. Active product status and ROHS3 compliance are maintained. Output voltage range of 3V to 15V differs from the original 40V specification.

MIC5400YWM-TR (Microchip Technology) is suitable only for applications with reduced current requirements (30mA per channel). The 4.75V minimum supply voltage excludes designs requiring operation below this threshold. Operating temperature range extends to 125°C (junction), and MSL-2 rating requires controlled storage conditions.

Frequently Asked Questions (FAQ)

Q: Can I directly replace PCA9622DR,118 with TLC59116IPWR without PCB modifications?

A: No. The TLC59116IPWR uses a 28-TSSOP package versus the original 32-TSSOP, requiring PCB footprint redesign. Pin assignments differ between manufacturers. Schematic review and layout validation are necessary.

Q: What is the primary limitation when substituting with PCA9955BTWJ?

A: The PCA9955BTWJ provides 65mA per-channel output compared to the original 100mA specification. Applications requiring the full 100mA per-channel capability must verify that 65mA meets load requirements. Package footprint also changes from 32-TSSOP to 28-TSSOP.

Q: Is MIC5400YWM-TR suitable for low-voltage applications below 4.75V?

A: No. The MIC5400YWM-TR minimum supply voltage is 4.75V, making it incompatible with designs operating at 2.3V or other voltages below this threshold. The original PCA9622DR,118 supports operation down to 2.3V.

Q: What are the control interface differences between substitute parts?

A: The original PCA9622DR,118 uses PWM dimming control. TLC59116IPWR provides I2C-based dimming, requiring firmware modifications for control implementation. TLC5923RHBR and TLC5944PWP use shift register control topology, necessitating different serial communication protocols.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the original part's environmental compliance status.

Q: Which substitute offers the highest per-channel output current?

A: TLC59116IPWR provides 120mA per-channel output, exceeding the original 100mA specification. This part is suitable for applications requiring increased current capability.

Q: Are there package compatibility considerations for high-volume production?

A: Yes. Package changes from 32-TSSOP to 28-TSSOP (PCA9955BTWJ, TLC59116IPWR, TLC5944PWP) or 32-VQFN (TLC5923RHBR) require PCB redesign, assembly process validation, and thermal management reassessment. Moisture sensitivity levels vary (MSL-1 versus MSL-2), affecting storage and handling procedures.