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Product Detailed Parameters
- Description：IC LED DRVR LINEAR 75.5MA 16SOIC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tube
- 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 A6275ELW is a linear LED driver IC featuring an 8-channel shift register topology. It operates within a supply voltage range of 4.5 V to 5.5 V, delivering a constant output current of 75.5 mA per channel with a maximum output voltage of 4 V. The device supports PWM dimming at frequencies up to 20 MHz and functions in temperatures from -40°C to 85°C. Packaged in a 16-SOIC surface-mount format, it integrates internal switches for direct LED control.
Feature Summary
- Integrates an 8-bit serial shift register for simplified daisy-chain control of multiple channels
- Provides constant current regulation for high-brightness LED arrays
- Supports analog and pulse-width modulation dimming for brightness adjustment
- Includes internal switching elements to drive load directly
Applications
- Automotive interior lighting systems
- Industrial display backlighting
- Consumer electronic indicator arrays
Procurement Notes
Verify component status as the A6275ELW is listed as obsolete or not recommended for new designs. Confirm RoHS compliance requirements against specific revision levels, as older batches may not meet current environmental standards. Validate package dimensions and pinout compatibility during replacement planning to ensure proper PCB footprint integration.
Selection Notes
Select this part when designing low-voltage LED arrays requiring precise current matching across eight channels. The linear topology suits applications where thermal dissipation can be managed via the SOIC package. Ensure input voltage remains strictly within the 4.5 V to 5.5 V window to prevent damage or malfunction. Consider the 20 MHz clock limit for high-speed scanning applications.
Part Context
This component belongs to the Allegro A6275 family of linear LED drivers. Variants such as the A6275SA (DIP) and A6275SLW-T (tape/reel) share identical electrical characteristics but differ in packaging and shipping methods. The ELW suffix specifically denotes the 16-lead SOIC surface-mount package configuration.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, verify functional equivalents with matching 8-channel linear topology and 75.5 mA output current specifications.
