CAT9552WI-T1 Equivalent & Substitute Parts

Part Overview

The CAT9552WI-T1 is a 16-output linear LED driver IC manufactured by onsemi, designed for applications requiring independent control of multiple LED channels. This device features 25mA per-channel output capability with linear dimming control and operates across a 2.3V to 5.5V supply voltage range. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

CAT9552WI-T1

onsemiIn Stock: 1112CAT9552WI-T1 Datasheet

Current PartRFQ

PCA9552D,118

NXP SemiconductorsIn Stock: 2501PCA9552D,118 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAT9552WI-T1 is determined by the following critical parameters:

• Number of Outputs: 16 channels (mandatory match)
• Current - Output / Channel: 25mA per channel (mandatory match)
• Voltage - Supply Range: 2.3V to 5.5V (mandatory match)
• Operating Temperature Range: -40°C to 85°C (mandatory match)
• Package / Case: 24-SOIC form factor (mandatory match for PCB compatibility)
• Mounting Type: Surface Mount (mandatory match)
• Type: Linear topology (mandatory match)

The PCA9552D,118 from NXP Semiconductors meets all critical electrical and mechanical parameters required for direct substitution. Both devices share identical output channel count, per-channel current rating, supply voltage specifications, operating temperature range, and physical package dimensions.

Parameter Comparison

Engineering Selection Recommendations

The PCA9552D,118 is the qualified substitute for the obsolete CAT9552WI-T1. Selection is based on:

• Electrical Equivalence: Both devices operate identically across the specified supply voltage range (2.3V to 5.5V) with 16 outputs rated at 25mA per channel.
• Thermal Compatibility: Identical operating temperature range (-40°C to 85°C) ensures performance consistency across environmental conditions.
• Physical Compatibility: Matching 24-SOIC package dimensions enable direct PCB layout compatibility without redesign.
• Product Status: The PCA9552D,118 maintains active production status with NXP Semiconductors, ensuring long-term availability and supply chain stability.
• Compliance: Both devices carry REACH compliance status appropriate for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the PCA9552D,118 be used as a direct replacement for the CAT9552WI-T1?

A: Yes. Both devices share identical electrical specifications (16 outputs, 25mA per channel, 2.3V–5.5V supply range, -40°C to 85°C operating temperature) and physical packaging (24-SOIC). No circuit modifications are required for substitution.

Q: Are there differences in control interface between these devices?

A: The CAT9552WI-T1 uses linear dimming control, while the PCA9552D,118 implements I2C-based dimming control. This represents a functional difference in control methodology that must be evaluated against application requirements.

Q: Does the package form factor match exactly?

A: Yes. Both devices use the 24-SOIC package with identical dimensions (0.295" width, 7.50mm). PCB footprints are compatible without modification.

Q: What is the inventory status for each part?

A: The CAT9552WI-T1 has 1022 units in stock (obsolete status). The PCA9552D,118 has 2406 units in stock with active product status, providing superior long-term availability.

Q: Are there any compliance or certification differences?

A: Both devices carry REACH compliance. The CAT9552WI-T1 is classified as REACH Unaffected. Moisture sensitivity levels are equivalent (MSL 1 for the CAT9552WI-T1). Specific MSL data for the PCA9552D,118 should be confirmed with the manufacturer datasheet.