AS1115-BQFT

Overview

The AS1115-BQFT is a compact, I²C-interfaced LED driver IC designed for driving an 8x8 LED matrix or eight 7-segment displays. It features 4-bit PWM control per segment and supports analog current adjustment via an external resistor, allowing up to 5mA per LED. The device includes short/open LED error diagnostics and can read back 16 keys. It operates on a supply voltage ranging from 2.7V to 5.5V and is available in QSOP24 and TQFN24 packages.

Feature Summary

• I²C interface for simplified system integration
• Integrated 4-bit PWM dimming for individual brightness control
• Built-in diagnostic capabilities for LED open and short circuits
• Supports 16-key matrix readback functionality

Applications

• Dot-matrix LED display systems
• Multi-digit 7-segment numeric displays
• Computing equipment indicator panels
• User interface keypads with integrated lighting

Procurement Notes

Verify the specific ordering code Q65114A0653 against current manufacturer status. Confirm package availability as the component may be subject to design-in restrictions or discontinuation notices. Ensure compatibility with existing I²C bus protocols and verify that the 5.5V maximum supply voltage aligns with the target system power rails before finalizing procurement.

Selection Notes

Select this component when a low pin-count solution is required for driving multiple LEDs via a serial interface. It is suitable for applications needing individual segment dimming without complex external logic. Consider the thermal performance of the TQFN24 or QSOP24 package based on the total number of simultaneously lit LEDs and the ambient operating temperature constraints of the enclosure.

Part Context

The AS1115 belongs to the AS1115 series of LED drivers manufactured by ams OSRAM. This series focuses on providing efficient, space-saving solutions for visual indication and simple display tasks. The BQFT suffix typically denotes a specific tape-and-reel packaging variant within the product line, intended for automated surface-mount assembly processes.

Replacement Considerations

Consult official cross-reference tools for compatible alternatives. Verify that any substitute maintains identical I²C command sets, pinout configurations, and current sink capabilities to ensure seamless integration without redesigning the host PCB or firmware.