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Product Detailed Parameters
- Description：IC LED DRVR LINEAR 75.5MA 24SOIC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tube
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：75.5mA
- Frequency：25MHz
- Dimming：-
- Applications：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Grade：-
- Qualification：-
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Overview
The A6279ELW-T is a linear LED driver IC manufactured by Allegro MicroSystems, housed in a 24-SOIC package. It features 16 outputs with a maximum current of 75.5mA per channel and operates on a supply voltage between 3V and 5.5V. The device utilizes a shift register topology and supports PWM dimming at frequencies up to 25MHz. Designed for surface mount installation, it functions within an ambient temperature range of -40°C to 85°C.
Feature Summary
- Integrates 16 independent linear output channels for precise LED current control
- Utilizes a serial shift register interface for simplified data input and configuration
- Supports pulse-width modulation (PWM) dimming for adjustable brightness levels
- Includes internal switching elements to reduce external component requirements
Applications
- General illumination systems requiring multi-channel LED driving
- Industrial display backlighting applications
- Consumer electronics lighting modules
Procurement Notes
This specific part number is officially discontinued and no longer in production. Designers must verify the availability of alternative components or updated revisions before initiating procurement. Sourcing should focus on qualified substitute devices that meet the original electrical specifications and pinout compatibility to ensure system reliability and continuity.
Selection Notes
Engineers evaluating this component should note its discontinuation status. Selection criteria must prioritize compatible replacements offering similar 16-channel linear drive capabilities and SOIC packaging. Verify that substitute devices support the required 75.5mA output current and 25MHz PWM frequency while maintaining the 3V to 5.5V operating voltage range for seamless integration into existing designs.
Part Context
The A6279 belongs to Allegro's portfolio of LED driver integrated circuits designed for high-reliability applications. This series typically emphasizes robust protection features and efficient thermal management within compact surface-mount packages. The device represents a solution for managing multiple LED strings in space-constrained environments where linear regulation offers simplicity over complex switching topologies.
Replacement Considerations
Publicly confirmed substitutes include MAX6969AWG+ and MAX6969AWG+T from Analog Devices Inc./Maxim Integrated. These alternatives are identified as functionally similar replacements for the discontinued A6279ELW-T.
FAQ
What is the maximum operating frequency for PWM dimming?
The device supports PWM dimming frequencies up to 25MHz.
How many output channels does the A6279ELW-T provide?
It provides 16 independent output channels.
