ULN2003APG IC

Description

The ULN2003 devices are high-voltage, high-current Darlington transistor arrays. Each consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for Simplified Block Diagram switching inductive loads. The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers.

Features

• The ULN2003A is a high-voltage, high-current Darlington transistor arrays device.
• Each IC or chip has seven NPN Darlington pairs that feature high-voltage outputs with common cathode clamp diodes for switching inductive loads.
• The collector-current rating of a single Darlington pair: – 500 mA.
• We can parallel The Darlington pair to get the high current capability.
• Applications of ULN2003: – relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers.
• The ULN2002A IC is specifically designed for use with 14-V to 25-V MOS devices.
• To control input current to a safe limit, each input of ULN2003 has resistor and Zener diode.
• The ULN2003A has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

Applications

• 500-mA-Rated Collector Current (Single Output).
• High-Voltage Outputs: 50 V.
• Output Clamp Diodes.
• Relay-Driver Applications.
• Motor Driver Application.
• Stepper Motor Driver.
• DIY Projects needing high current drive.