ULN2003ADR
ULN2003ADR is a 7-channel Darlington transistor array with 1:1 input-output ratio, 50V 500mA per channel, in SOIC-16 package.
Specifications
Description
The ULN2003ADR from Texas Instruments is a high-voltage, high-current Darlington transistor array. It integrates seven NPN Darlington pairs in a single SOIC-16 package, each capable of driving loads up to 50V and 500mA. The device features a 1:1 input-to-output ratio, making it suitable for direct interfacing with logic-level signals.
Key Features
- Seven open-collector Darlington pairs with common emitter
- Output voltage rating: 50V
- Output current per channel: 500mA
- Integral suppression diodes for inductive loads
- Inputs compatible with standard logic levels
- Compact SOIC-16 package for space-constrained designs
Applications
- Relay drivers
- Stepper motor drivers
- Lamp drivers
- Display drivers (LED)
- Logic buffer
Selection Notes
When selecting the ULN2003ADR, consider the total power dissipation and ensure adequate thermal management for high-current applications. For higher current requirements, parallel channels can be used. Verify input voltage thresholds and operating temperature range from the official datasheet for your specific application.