E-ULQ2003D1

Overview

The E-ULQ2003D1 is an automotive-grade, high-voltage Darlington array manufactured by STMicroelectronics. It integrates seven open-collector Darlington pairs with common emitters within a single SO-16 package. Each channel provides a continuous output current of 500 mA and can withstand peak currents up to 600 mA. The device operates with a maximum output voltage of 50 V and includes integrated suppression diodes for inductive load driving. It features TTL, CMOS, PMOS, and DTL compatible inputs, with input pins arranged opposite outputs to simplify board layout.

Feature Summary

• Automotive grade qualification compliant with AEC-Q100 standards
• Integrated suppression diodes for efficient inductive load management
• Extended operating temperature range from -40 °C to 125 °C
• Input-output pin arrangement designed to facilitate printed circuit board layout

Applications

• Driving solenoids and relays in automotive systems
• Controlling DC motors in industrial or vehicle applications
• Powering LED displays and filament lamps
• Actuating thermal print-heads
• Serving as high-power buffers for logic signals

Procurement Notes

Verify the specific suffix 'E' against official STMicroelectronics documentation to confirm it denotes the Automotive Grade variant in the SO-16 package. Ensure the component meets AEC-Q100 requirements for the target application environment. Cross-reference the order code with the manufacturer's current product status to confirm availability and compliance with relevant automotive specifications.

Selection Notes

Select this component when designing circuits requiring multiple high-current switches driven by standard logic families. The integrated flyback diodes eliminate the need for external protection components for inductive loads. Consider the SO-16 package constraints and thermal dissipation capabilities relative to the total power consumption of all active channels. Verify compatibility with the system's supply voltage and logic levels.

Part Context

This part belongs to the ULQ200x family of Darlington arrays, which also includes the ULQ2001 and ULQ2004. These devices share similar internal architectures but may differ in pinout configurations or specific packaging options. The ULQ2003 variant is specifically characterized by its seven-channel configuration and is available in both commercial plastic DIP and SO-16 packages, with the latter offering automotive qualification.

Replacement Considerations

Direct substitutes include the ULQ2003D1 (commercial grade) if automotive qualification is not strictly required. Other compatible parts from the same family are the ULQ2001 and ULQ2004, provided their pinouts match the design requirements. Verify that any replacement maintains the 500 mA per channel rating and 50 V output voltage capability.