Allegro MicroSystems

A2557KEB  

Power Distribution Switches, Load Drivers

A2557KEB Description

The A2557KEB is a high-performance power driver IC designed by Allegro MicroSystems, a leading manufacturer in the electronics industry. This bipolar, low-side power distribution switch is specifically engineered for applications requiring robust current handling and precise control. With a maximum output current of 300mA and a load voltage capability up to 60V, the A2557KEB is ideal for driving relays and solenoids. The device operates within a supply voltage range of 4.75V to 5.25V, ensuring compatibility with a wide range of power supplies.

The A2557KEB features a 1:1 input-to-output ratio, providing straightforward control and ensuring that the output current is directly proportional to the input signal. The device is housed in a surface-mount package, making it suitable for compact and space-efficient designs. Additionally, the A2557KEB includes advanced fault protection mechanisms such as fixed current limiting and over-temperature protection, which safeguard the device and connected components from damage due to excessive current or heat.

A2557KEB Features

• Output Type: Bipolar, ensuring efficient power handling and control.
• Output Configuration: Low Side, facilitating easy integration into various circuit designs.
• Current - Output (Max): 300mA, capable of driving a range of loads.
• Voltage - Load: Up to 60V, providing versatility for different applications.
• Fault Protection: Current Limiting (Fixed) and Over Temperature, ensuring reliability and longevity.
• Features: Status Flag, allowing for real-time monitoring of the device's operational status.
• Voltage - Supply (Vcc/Vdd): 4.75V to 5.25V, ensuring compatibility with standard power supplies.
• Moisture Sensitivity Level (MSL): 1 (Unlimited), making it suitable for a wide range of environmental conditions.
• Mounting Type: Surface Mount, ideal for compact and space-efficient designs.
• Number of Outputs: 4, providing multiple control channels.
• Package: Tube, ensuring easy handling and storage.
• Interface: On/Off, simplifying control and integration.

A2557KEB Applications

The A2557KEB is particularly well-suited for applications that require precise control and robust power handling. Its ability to drive relays and solenoids makes it ideal for use in automotive, industrial, and consumer electronics. Some specific use cases include:

• Automotive Systems: Controlling relays and solenoids in automotive applications such as window lifts, seat adjustments, and engine management systems.
• Industrial Control: Driving solenoids in industrial machinery for precise control of valves and actuators.
• Consumer Electronics: Managing power distribution in devices such as printers, scanners, and other peripherals that require reliable power switching.

Conclusion of A2557KEB

The A2557KEB by Allegro MicroSystems stands out as a reliable and efficient power driver IC, offering a range of features and benefits that make it ideal for various applications. Its robust fault protection mechanisms, high load voltage capability, and precise control features set it apart from similar models. Despite its obsolete status, the A2557KEB remains a valuable component for engineers and designers seeking a reliable power distribution solution.

A2557KEB Documents

Download datasheets and manufacturer documentation for A2557KEB

Datasheets :

A2557      

PCN Packaging :

Tape Change 27/Jan/2023      

HTML Datasheet :

A2557