ULN2003A Description

ULN2003A is a 7-way inverter circuit, that is, when the input is high, the ULN2003A output is low, when the input is low, the ULN2003A output is high. Because the ULN2003A is an open collector output, in order to make the diode play the role of continuous current, the COM pin (PIN9) must be connected to the power supply of the load. Only in this way can a continuous current loop be formed. It can also be used as some devices, such as the driving circuit of stepper motor.

ULN2003A Features

  Module configuration: 7 NPN

Voltage, Vceo:50V

Collector DC current: 500mA

DC current gain hFE:1000

Operating temperature range:-20 °C to + 85 °C

Encapsulation type: PDIP

Number of pins: 16

Encapsulation type: DIP

Number of transistors: 7

Surface mount device: through hole mount device label: 2003

Maximum continuous current, Ic:500mA

Chip label: 2003

Maximum input voltage: 30V

Input type: 5V TTL CMOS

Maximum output voltage: 50V

Maximum output current: 0.6A

ULN2003A Applications

driving circuit of stepper motor.