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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 150MA 20DIP
- 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：150mA
- Frequency：-
- Dimming：-
- Applications：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：20-DIP (0.300", 7.62mm)
- Supplier Device Package：20-DIP
- Grade：-
- Qualification：-
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Overview
The A6277SA is a linear LED driver IC manufactured by Allegro MicroSystems. It features an 8-channel output topology controlled via a shift register interface. The device operates within a supply voltage range of 4.5V to 5.5V, delivering a channel output current of 150mA. It supports PWM dimming functionality and is rated for an operating temperature range of -40°C to 85°C. The component is housed in a 20-DIP package with a width of 0.300 inches (7.62mm).
Feature Summary
- Integrates an 8-channel linear driver architecture managed through a serial shift register control mechanism.
- Supports pulse-width modulation dimming for adjustable LED brightness levels.
- Includes internal switching elements to manage output channels directly.
Applications
- General purpose LED lighting arrays requiring constant current drive.
- Industrial indicator panels utilizing multi-channel LED configurations.
- Consumer electronic displays dependent on standard voltage logic interfaces.
Procurement Notes
Verify component status carefully as this specific part number is listed as obsolete or discontinued by the manufacturer. Confirm availability through secondary market distributors if immediate procurement is required. Ensure that the 20-DIP through-hole package format aligns with existing board layouts, as surface-mount alternatives may be necessary for new designs.
Selection Notes
Select this component only when legacy compatibility with 20-pin DIP footprints is mandatory. Evaluate whether modern linear drivers with higher efficiency or integrated protection features better suit current design requirements. Consider the limited supply chain stability associated with discontinued automotive-grade components during the selection phase.
Part Context
This device belongs to the A6277 series of LED drivers from Allegro MicroSystems. It serves as a specialized solution for applications requiring multiple independently controllable LED channels within a single integrated circuit. The series focuses on providing reliable constant current regulation for various lighting implementations.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official Allegro MicroSystems resources for current equivalent recommendations or pin-compatible upgrades.
