ULQ2003ATDRAS

Overview

The ULQ2003ATDRAS is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven independent NPN Darlington pairs within a single 16-pin SOIC package. Each channel provides a continuous collector current of 500 mA and can withstand peak currents up to 600 mA. The device features an output voltage rating of 50 V and includes integrated suppression diodes for inductive load driving. It operates across an extended temperature range from -40°C to 105°C and is qualified according to AEC-Q100 automotive standards.

Feature Summary

• Integrates seven open-collector Darlington pairs with common emitters for versatile switching applications
• Includes built-in suppression diodes to protect against voltage spikes from inductive loads
• Features input pins positioned opposite corresponding outputs to simplify printed circuit board layout
• Compatible with TTL, CMOS, PMOS, and DTL logic families for broad interface support

Applications

• Driving solenoids and relays in industrial control systems
• Powering DC motors and thermal print-heads
• Actuating LED displays and filament lamps
• Serving as high-power buffers in digital logic circuits

Procurement Notes

Verify the specific suffix 'RAS' against official Texas Instruments documentation to confirm exact packaging and tape-and-reel specifications. Confirm current production status and availability through authorized distributors, as component lifecycle stages may affect long-term supply continuity.

Selection Notes

Select this component when designing circuits requiring multiple high-current switches driven by standard logic levels. Ensure the PCB layout accommodates the thermal dissipation requirements for 500 mA per channel. Verify that the 50 V output voltage rating exceeds the maximum load voltage in the application environment.

Part Context

This part belongs to the ULQ2003A series of Darlington arrays, which are designed for robust load driving. The ULQ2003 variant specifically offers seven channels, distinguishing it from the ULQ2001 (one channel) and ULQ2004 (four channels). The automotive qualification ensures reliability in demanding environments compared to commercial-grade equivalents.

Replacement Considerations

Check for ULQ2003AD or ULQ2003ADR as potential pin-compatible alternatives with different packaging options. Verify if ULN2003AN serves as a functional substitute for through-hole designs, noting differences in operating temperature ranges and package types.