ULN2804A

Teilpunkte

• The ULN2804A is an 8-channel high-voltage, high-current Darlington transistor array. It is commonly used as a driver for relays, motors, stepper motors, and other high-power devices. The chip can handle a maximum voltage of 50V and a maximum current of 500mA per channel. It provides a simple way to control multiple loads with low-level signals from microcontrollers or other digital devices.

• Equivalent

  Some equivalent products of the ULN2804A chip include the ULN2003A, ULN2004A, and the L293D.

• Features

  ULN2804A is an 8-channel Darlington transistor array with common cathode clamp diodes. The features include high voltage and current capability, high noise immunity, built-in flyback diodes for driving inductive loads, and TTL, CMOS, and PMOS-compatible inputs.

• Pinout

  The ULN2804A is a 18-pin darlington transistor array. It is commonly used as a high-voltage, high-current driver for various applications, such as driving relays, solenoids, stepper motors, and LED displays. The pinout consists of 7 input pins, 7 output pins, an output common pin, and a power supply pin.

• Manufacturer

  The manufacturer of the ULN2804A is Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of integrated circuits and other electronics components for various applications, including analog and digital signal processing, microcontrollers, and power management.

• Application Field

  The ULN2804A is commonly used as a relay driver or high-voltage/high-current switch driver in various applications like industrial control systems, automotive electronics, robotics, and power supply control. It provides a convenient and efficient way to interface low-level logic signals with higher-level loads such as motors, solenoids, and lamps.

• Package

  The ULN2804A chip is available in a DIP package type, with 18 pins.