Description

The ULN2004D1 is a high voltage, high current darlington array which contains seven open collector darlington pairs with common emitters. It is designed for applications that require driving high current loads such as relays, solenoids, stepper motors, and lamps. The ULN2004D1 has a maximum output current of 500 mA per driver and can withstand peak currents of up to 600 mA. It also features integrated suppression diodes for driving inductive loads and the inputs are pinned opposite the outputs to simplify board layout.

Specifications and features

- Seven darlington pairs per package
- Maximum output current: 500 mA per driver (600 mA peak)
- Maximum output voltage: 50 V
- Integrated suppression diodes for driving inductive loads
- Outputs can be paralleled for higher current
- Compatible inputs: TTL/CMOS/PMOS/DTL
- Inputs pinned opposite outputs to simplify layout

Application Scenarios

The ULN2004D1 is commonly used in various applications to provide high current and high voltage switching capabilities. Some typical application scenarios include:

• - Driving relays and solenoids
• - Controlling stepper motors
• - Switching high current loads
• - Illumination control for lamps and LEDs

Comparison

- High voltage and high current capabilities

- Integrated suppression diodes for driving inductive loads

- Inputs pinned opposite outputs for simplified layout

- Limited maximum output voltage of 50 V