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Product Detailed Parameters
- Description：IC DRVR DOT MATRIX 28QFN
- Series：-
- Mfr：Panasonic Electronic Components
- Package：Tape & Reel (TR)
- Display Type：LED
- Configuration：Dot Matrix
- Interface：I2C, SPI
- Digits or Characters：-
- Voltage - Supply：3.1V ~ 5.5V
- Operating Temperature：-30°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：28-VFQFN
- Supplier Device Package：28-QFN
- Current - Supply：-
- Grade：-
- Qualification：-
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Overview
The AN32181B-VB is a 12-channel LED display driver designed for dot matrix applications. It features a boosted output voltage of 5.8V and delivers a maximum current of 20.85mA per channel using a constant current topology. The device supports I2C and SPI interfaces for control. It operates within an ambient temperature range of -30°C to 85°C and is housed in a 28-VFQFN package with dimensions of 4.5x5.0mm. The unit is moisture sensitive and has a power dissipation rating of 569 mW.
Feature Summary
- Integrates 12 independent constant current channels for precise LED control
- Includes internal voltage boosting circuitry to drive matrix loads
- Supports digital interface communication via I2C or SPI protocols
Applications
- Dot matrix LED displays
- Matrix LED signage modules
- Small format visual indicators
Procurement Notes
Verify component authenticity through authorized Panasonic Industry distributors, as the part is classified as obsolete. Confirm lot dates and moisture sensitivity level handling requirements prior to assembly. Ensure supply chain sources provide valid traceability documentation for quality assurance purposes.
Selection Notes
Select this driver for designs requiring integrated boost functionality and multi-channel constant current regulation in a compact surface-mount footprint. Evaluate thermal management capabilities given the specified power dissipation limits. Consider interface compatibility with host controllers supporting I2C or SPI standards.
Part Context
This component belongs to Panasonic's LED driver portfolio, specifically engineered for matrix display configurations. It consolidates multiple drive functions into a single QFN package to reduce board space. The product line focuses on reliable operation in consumer and industrial display environments.
Replacement Considerations
As the AN32181B-VB is obsolete, identify equivalent drivers from Panasonic or other manufacturers that match the 28-QFN package, 12-channel count, and electrical specifications. Verify pinout compatibility and interface signaling levels before substitution.
