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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 50MA 24QFN
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：12V
- Current - Output / Channel：50mA
- Frequency：30MHz
- Dimming：-
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The A6282EESTR-T is a 16-channel constant-current LED driver IC manufactured by Allegro MicroSystems. It features linear topology with internal switches, providing up to 50 mA per channel and an output voltage of 12 V. The device operates on a 3 V to 5.5 V supply, supports PWM dimming at 30 MHz, and is housed in a 24-SOIC package. Designed for backlighting applications, it includes Schmitt trigger inputs, power-on reset, and thermal shutdown protection.
Feature Summary
- Provides 16 independent constant-current outputs with high accuracy across channels and devices.
- Integrates Schmitt trigger inputs to enhance noise immunity during data transmission.
- Includes built-in under-voltage lockout (UVLO) and thermal shutdown circuitry for system protection.
Applications
- LCD backlighting systems
- High-brightness LED arrays
- Display illumination modules
Procurement Notes
Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure the component matches the required operating temperature range and electrical ratings for the target application. Confirm availability status as distribution records may indicate end-of-life or obsolescence for certain variants.
Selection Notes
Select this component for designs requiring precise current regulation across multiple LED channels. The integrated shift register interface simplifies control logic. Consider the thermal performance of the SOIC package and ensure adequate PCB layout for heat dissipation given the linear regulation method.
Part Context
This part belongs to the A6282 family of 16-channel LED drivers from Allegro MicroSystems. It utilizes a linear regulation approach suitable for cost-sensitive backlighting applications. The device integrates CMOS logic and latches for efficient operation within standard voltage ranges.
Replacement Considerations
Public confirmed substitutes include MAX6969AWG+ and MAX6969AWG+T from Analog Devices/Maxim Integrated. Verify pin compatibility and electrical parameters before substitution.
