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Product Detailed Parameters
- Description：IC LED DRVR LIN 75.5MA 24TSSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tube
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：16
- 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：24-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：24-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The Allegro A6276ELP is a linear LED driver IC featuring a 16-bit serial input and constant-current latched outputs. It integrates a CMOS shift register, data latches, and sixteen NPN constant-current sink drivers. The device supports a supply voltage range of 4.5V to 5.5V with output voltages up to 4V. It operates within an ambient temperature range of -40°C to 85°C and utilizes a 24-SOIC package.
Feature Summary
- Integrates a 16-bit CMOS shift register and data latches for direct microprocessor interfacing
- Provides sixteen constant-current sink drivers controlled by user-selected external resistance
- Supports cascade connections via a dedicated CMOS serial data output pin
Applications
- LED display systems requiring segment driving
- Microprocessor-based indicator panels
- Applications necessitating cascaded drive lines
Procurement Notes
Verify the specific suffix EL against manufacturer documentation to confirm package type and thermal characteristics. Confirm RoHS compliance status as historical records indicate non-compliance for certain variants. Ensure the design accommodates the specified operating temperature limits and logic supply requirements before finalizing procurement.
Selection Notes
Select this component for applications requiring high-speed serial data input rates up to 20 MHz with a 5V logic supply. It serves as a functional replacement for legacy parts like the TB62706BN/BF. Consider the 24-SOIC package constraints and power dissipation capabilities when designing the PCB layout for thermal management.
Part Context
The A6276 belongs to Allegro's family of BiCMOS LED display drivers designed for segment displays. It shares architectural similarities with the 8-bit A6275 series but offers double the output channels. The device is engineered for robustness in automotive and industrial environments, providing under-voltage lockout and low-power logic operation.
Replacement Considerations
The datasheet identifies the TB62706BN/BF as a functional replacement target. Designers should verify pin compatibility and current sinking capabilities when substituting these components.
