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Product Detailed Parameters
- Description：IC LED DRVR LINEAR 75.5MA 16SOIC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：8
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：4V
- Current - Output / Channel：75.5mA
- Frequency：20MHz
- Dimming：-
- Applications：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The Allegro Microsystems A6275ELWTR-T is a linear LED driver IC featuring an 8-channel shift register topology. It operates within a supply voltage range of 4.5V to 5.5V and provides a regulated output current of 75.5mA per channel. The device supports PWM dimming functionality for brightness control. It is housed in a 16-SOIC surface-mount package with a width of 7.50mm. The component is rated for an ambient operating temperature range of -20°C to +85°C.
Feature Summary
- Integrates an 8-channel shift register for serial data input and parallel LED output control.
- Provides constant current regulation via linear topology for stable LED illumination.
- Supports analog and pulse-width modulation (PWM) dimming methods for display brightness adjustment.
Applications
- Seven-segment display drivers for microcontroller serial interfaces
- Multi-display brightness control circuits
- Industrial and consumer LED lighting applications
Procurement Notes
Verify the specific suffix ELWTR-T against official datasheets to confirm the tape-and-reel packaging format and RoHS compliance status, as legacy variants may differ. Confirm that the 16-SOIC footprint matches the target PCB layout dimensions. Ensure design compatibility with the 4.5V to 5.5V supply voltage constraints before finalizing procurement.
Selection Notes
Select this component when designing systems requiring multiple LED channels controlled via a simple serial interface. It is suitable for applications where linear regulation efficiency is acceptable and precise current matching across eight outputs is required. Consider the thermal dissipation capabilities of the SOIC package relative to the total load current and ambient temperature conditions.
Part Context
This part belongs to the A6275 series of LED drivers from Allegro MicroSystems. The series is designed for display and lighting applications, offering integrated shift registers to simplify microcontroller interfacing. The A6275 family typically includes various package options and suffixes to accommodate different manufacturing and environmental requirements.
Replacement Considerations
Check for A6275SLWTR-T or A6275EA-T as potential pin-compatible alternatives within the same series. Verify if the replacement variant maintains the same 75.5mA output current specification and 16-pin SOIC/DIP footprint. Confirm that any substitute meets the required operating temperature range and electrical characteristics.
