The TD62381FG is a high-voltage, high-current source driver array IC from Toshiba Semiconductor and Storage. It is designed to drive inductive loads such as relays, solenoids, and stepping motors. A significant feature is the inclusion of internal clamping diodes, which protect the device from back-EMF voltage generated when switching inductive loads.

Applications

  
• Relay Driving
  
• Solenoid Driving
  
• Stepping Motor Driving
  
• Lamp Driving
  
• LED Display Driving
  
• Logic Buffers

Features

  
• High Output Voltage: Rated up to 50V
  
• High Output Current: Capable of sourcing up to 500mA per channel
  
• Built-in Clamping Diodes: Protects against inductive kickback voltage
  
• Input Compatibility: Compatible with TTL and 5V CMOS logic levels
  
• Low Saturation Voltage: Ensures efficient power delivery
  
• Multiple Channels: Contains multiple independent driver channels in a single package

Benefits

  
• Provides a robust interface between low-voltage logic and high-voltage/high-current loads.
  
• Simplifies circuit design with integrated clamping diodes, reducing the need for external components.
  
• Protects the device and surrounding circuitry from damaging voltage spikes.
  
• Ensures efficient power transfer with minimal power dissipation.
  
• Offers flexibility in driving multiple loads independently.

Additional Details

The TD62381FG comprises several independent source driver channels. Each channel includes an input, an output, and a clamping diode connected between the output and the supply voltage. These diodes are essential for suppressing the voltage spikes caused by inductive loads during switching. The device's compatibility with both TTL and 5V CMOS logic levels allows for easy integration with a wide range of control circuits. The low saturation voltage characteristic minimizes power loss and heat generation. The TD62381FG is generally available in a surface-mount package such as a SOL (Small Outline Large) package, facilitating automated assembly and reducing the overall system size. Operating temperature range is typically from -40°C to +85°C.