Allegro MicroSystems

A2557KLBTR  

Power Distribution Switches, Load Drivers

A2557KLBTR Description

The A2557KLBTR is a high-performance power distribution switch and load driver designed by Allegro MicroSystems. This IC is specifically engineered for applications requiring robust power management and control. It features a bipolar output type with a low-side configuration, making it ideal for driving relays and solenoids. The device supports a maximum output current of 300mA and can handle a maximum load voltage of 60V. It operates within a supply voltage range of 4.75V to 5.25V, ensuring compatibility with a wide range of power supplies.

The A2557KLBTR is housed in a 16SOIC package and is available in a tape and reel format, facilitating surface-mount assembly processes. It includes a status flag feature and offers fixed current limiting and over-temperature fault protection, ensuring reliable operation under various conditions. The device is REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.39.0001. Although the product is now obsolete, it remains a valuable component for legacy systems and specific applications.

A2557KLBTR Features

• Output Type: Bipolar
• Output Configuration: Low Side
• Current - Output (Max): 300mA
• Voltage - Load: 60V (Max)
• Voltage - Supply (Vcc/Vdd): 4.75V ~ 5.25V
• Features: Status Flag
• Fault Protection: Current Limiting (Fixed), Over Temperature
• Number of Outputs: 4
• Interface: On/Off
• Package: Tape & Reel (TR)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 2 (1 Year)
• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8542.39.0001

A2557KLBTR Applications

The A2557KLBTR is well-suited for applications requiring precise control and high reliability. Its ability to drive relays and solenoids makes it ideal for automotive, industrial, and medical equipment. The device's low-side configuration and robust fault protection ensure safe operation in environments with high electrical noise or transient voltages. Specific use cases include:

• Automotive Systems: For controlling relays in vehicle ignition systems, power windows, and other electrical components.
• Industrial Automation: Driving solenoids in robotic arms, conveyor belts, and other machinery.
• Medical Devices: Controlling relays in diagnostic equipment and medical instruments where reliability is critical.

Conclusion of A2557KLBTR

The A2557KLBTR by Allegro MicroSystems is a versatile power switch distribution and load driver that offers a range of features and benefits. Its bipolar output, low-side configuration, and robust fault protection make it a reliable choice for demanding applications. Despite being obsolete, the A2557KLBTR remains a valuable component for legacy systems and specific use cases. Its compatibility with a wide range of power supplies and its ability to handle high load voltages further enhance its utility. For engineers and designers working with power management systems, the A2557KLBTR is a proven solution that delivers consistent performance and reliability.

A2557KLBTR Documents

Download datasheets and manufacturer documentation for A2557KLBTR