CAT9552YI-T2 Equivalent & Substitute Parts

Part Overview

The CAT9552YI-T2 is a 16-output linear LED driver IC manufactured by onsemi, designed for applications requiring independent control of multiple LED channels. This component operates across a 2.3V to 5.5V supply range with 25mA per-channel output capability and integrated 400kHz frequency operation. The device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

CAT9552YI-T2

onsemiIn Stock: 1365CAT9552YI-T2 Datasheet

Current PartRFQ

MIC5400YWM-TR

Microchip TechnologyIn Stock: 853MIC5400YWM-TR Datasheet

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PCA9552PW,118

NXP USA Inc.In Stock: 2861PCA9552PW,118 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CAT9552YI-T2 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of outputs: 16 channels (mandatory match)
• Supply voltage range: 2.3V to 5.5V (substitute must support this range or be compatible within application constraints)
• Per-channel current rating: 25mA minimum (substitute must meet or exceed this specification)
• Package type: 24-TSSOP preferred for direct PCB compatibility
• Operating temperature range: -40°C to 85°C (substitute must support this range)

Identified Substitute Parts:

1. MIC5400YWM-TR (Microchip Technology) – Functionally equivalent with higher per-channel current (30mA) and extended temperature range, packaged in 28-SOIC format
2. PCA9552PW,118 (NXP USA Inc.) – Direct package and pin-compatible alternative with identical electrical specifications and I2C control interface, packaged in 24-TSSOP format

Parameter Comparison

Engineering Selection Recommendations

PCA9552PW,118 (NXP USA Inc.) is the primary substitute for direct replacement applications. This part maintains identical package geometry (24-TSSOP), matching supply voltage range (2.3V–5.5V), equivalent per-channel current (25mA), and identical operating temperature specifications (-40°C to 85°C). The device is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. The primary functional difference is the addition of I2C control interface, which provides enhanced programmability without compromising backward compatibility in linear dimming applications.

MIC5400YWM-TR (Microchip Technology) serves as an alternative for applications where increased per-channel current capacity (30mA) and extended operating temperature range (-40°C to 125°C) provide design advantages. This substitution requires PCB layout modification due to the 28-SOIC package format. The minimum supply voltage specification (4.75V) restricts use in applications requiring operation below this threshold. This device is actively manufactured with ROHS3 compliance.

Both substitute parts are currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete CAT9552YI-T2.

Frequently Asked Questions (FAQ)

Q: Can PCA9552PW,118 replace CAT9552YI-T2 without PCB modification?

A: Yes. Both devices use identical 24-TSSOP packaging with matching pin configurations, supply voltage range (2.3V–5.5V), per-channel current rating (25mA), and operating temperature specifications (-40°C to 85°C). No PCB layout changes are required. The addition of I2C control capability in the PCA9552PW,118 does not prevent operation in linear dimming mode.

Q: What are the limitations of MIC5400YWM-TR as a substitute?

A: The MIC5400YWM-TR requires PCB redesign due to its 28-SOIC package format versus the original 24-TSSOP. The minimum supply voltage specification of 4.75V restricts this device to applications operating at or above this threshold, whereas the CAT9552YI-T2 supports operation from 2.3V. The per-channel current rating of 30mA exceeds the original specification and may require thermal management review in existing designs.

Q: Are there compliance or certification differences between these parts?

A: Both substitute parts carry ROHS3 compliance certification. The PCA9552PW,118 maintains the same unlimited moisture sensitivity level (MSL 1) as the original CAT9552YI-T2. The MIC5400YWM-TR has a one-year moisture sensitivity window (MSL 2), requiring appropriate handling and storage protocols. All three parts maintain REACH Unaffected status.

Q: Which substitute is recommended for new designs?

A: PCA9552PW,118 is recommended for new designs requiring direct compatibility with existing CAT9552YI-T2 layouts. This part offers active production status, identical electrical specifications, and enhanced control flexibility through I2C interface. MIC5400YWM-TR is suitable for applications where increased per-channel current and extended temperature range justify PCB redesign effort.

Q: What is the frequency specification difference between CAT9552YI-T2 and MIC5400YWM-TR?

A: The CAT9552YI-T2 specifies 400kHz operating frequency. The MIC5400YWM-TR does not provide a published frequency specification in the available technical documentation. Applications requiring specific frequency characteristics should verify compatibility through detailed datasheet review or direct manufacturer consultation.