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Product Detailed Parameters
- Description：IC LED DRVR LIN I2C 25MA 24TSSOP
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：2.3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：25mA
- Frequency：400kHz
- Dimming：I2C
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：24-TSSOP
- Grade：-
- Qualification：-
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Overview
The CAT9532YI-T2 is an LED lighting driver IC and I2C/SMBus expander with integrated LED dimming capabilities, manufactured by onsemi. It features a TSSOP-24 package and provides 16 output channels with a low-level output current of 25 mA per channel. The device supports Boost and Buck topologies with adjustable output voltage. It operates within an input voltage range of 2.3 V to 5.5 V and supports a maximum operating frequency of 400 kHz. The power dissipation is rated at 1 W, with a maximum supply current of 550 uA. It functions reliably across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates I2C/SMBus expansion with dedicated LED dimming functionality for brightness control.
- Supports both Boost and Buck converter topologies for flexible LED drive configurations.
- Utilizes PWM dimming technology for precise light intensity management.
Applications
- LED lighting systems requiring I/O expansion and dimming
- General-purpose I/O expansion in embedded applications
- Brightness control circuits for display or illumination
Procurement Notes
Verify the specific ordering part number against the manufacturer's official documentation to ensure compatibility with the required package type and tape/reel specifications. Confirm that the component meets all relevant regulatory standards, such as RoHS compliance, as indicated in the product datasheet. Cross-reference the electrical parameters with system requirements before procurement.
Selection Notes
Select this component when an application requires simultaneous general-purpose I/O expansion and LED dimming via a single I2C/SMBus interface. Ensure the design accommodates the 2.3 V to 5.5 V supply range and the 400 kHz bus speed. Consider the TSSOP-24 package constraints and the 25 mA output current capability per channel for load matching.
Part Context
This component belongs to the CAT9532 series of LED drivers and expanders from onsemi. It combines standard GPIO expansion with specialized LED driving features, distinguishing it from generic I/O expanders. The 'YI' suffix typically denotes the industrial temperature range and TSSOP-24 packaging, while '-T2' indicates the reel packaging format.
Replacement Considerations
The CAT9532HV6I-GT2 is a related variant within the same family, offering similar functionality but in a TQFN-24 package. Verify pinout compatibility and thermal performance differences when considering substitutes. No other direct cross-model replacements are confirmed in the provided data.
