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Product Detailed Parameters
- Description：IC LED DRVR LIN 75.5MA 24TSSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- 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 A6276ELPTR is a 16-bit serial-input, constant-current latched LED driver IC manufactured by Allegro MicroSystems. It integrates a CMOS shift register, data latches, and sixteen NPN constant-current sink drivers within a single BiCMOS device. The unit operates with a supply voltage range of 4.5 V to 5.5 V and supports output currents up to 75.5 mA per channel. Designed for LED display applications, it features high-speed serial data input rates up to 20 MHz at 5 V logic levels. The package type is 24-TSSOP-EP.
Feature Summary
- Integrates a 16-bit CMOS shift register and accompanying data latches for direct microprocessor interfacing.
- Provides sixteen independent NPN 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 serial control
- Microprocessor-based lighting control interfaces
- Applications necessitating inter-digit blanking capabilities
Procurement Notes
Verify the specific suffix ELPTR against official datasheets to confirm the 24-TSSOP-EP package configuration. Confirm RoHS3 compliance status through current manufacturer documentation. Ensure compatibility with 5 V logic supplies and check for any recent product change notices regarding packaging or electrical specifications before finalizing procurement orders.
Selection Notes
Select this component when a fixed 16-channel constant-current solution is required for LED displays. It is suitable for designs needing high-speed serial data inputs up to 20 MHz. Consider the thermal dissipation limits of the TSSOP package and ensure the external resistor selection aligns with the desired 75.5 mA output current specification.
Part Context
This part belongs to the A6276 series of LED drivers from Allegro MicroSystems. The series includes variants such as the A6275EA and A6275ELW, which offer similar functionality in 8-bit configurations. These devices are designed to serve as functional replacements for legacy components like the TB62706BN/BF while providing integrated latch and shift register capabilities.
Replacement Considerations
The A6276 serves as a functional replacement for the TB62706BN/BF. Verify that substitute parts maintain identical 16-bit serial input architecture and compatible output current characteristics for seamless integration into existing LED display designs.
FAQ
How is the LED drive current determined?
The LED drive current is determined by the user's selection of a single external resistor connected to the device.
Can multiple A6276 units be connected together?
Yes, cascade connections are permitted using the CMOS serial data output pin to extend drive lines.
