ULQ2003ADR2G

Introduction: ULQ2003ADR2G is a 7-channel Darlington transistor array used to interface a microcontroller or logic circuit with higher-current, higher-voltage loads.
Key features
- 7 NPN Darlington pairs with common emitters (open-collector outputs) for sinking loads.
- Built-in input base resistors and common flyback diode pin (COM) for inductive loads.
- High-voltage capability (per channel) up to about 50 V; per-channel current up to ~500 mA.
- TTL/CMOS-compatible inputs (logic-level drive, typically 5 V).
- RoHS-compliant packaging; available in suitable surface-mount or through-hole variants.
Typical usage
- Connect loads from +V to each output; the device sinks current to ground.
- Tie COM to the supply voltage to clamp inductive kick via the internal diodes.
- Drive inputs from a microcontroller or logic device; no extra transistor driving needed.
Applications
- Relay and solenoid driving, small motors, LED driver sections, and other inductive or high-current loads.
Why use it
- Reduces required external components (no need for individual transistors or diodes) and simplifies board layout for multiple loads. Always consult the exact datasheet for precise ratings and pinout.

Here are the key features of ULQ2003ADR2G (Darlington sink driver):
- 7-channel high-voltage Darlington transistor sink driver
- Each channel can sink up to about 500 mA; Vceo up to 50 V
- Outputs are open-collector (sink to ground) with a common COM pin for flyback diodes
- Built-in flyback/clamp diodes for inductive loads
- TTL/CMOS-compatible inputs with internal input resistors
- Suitable for driving relays, lamps, LEDs, motors, and other loads requiring a low-side switch
- Package options: 16-pin DIP and RoHS-compliant surface-mount versions (ADR2G)
- Wide operating temperature range (typical -40°C to +125°C)
- Low external components and easy interfacing; no separate driver required
- Clamp diode pin shared for all diodes, simplifying wiring
Note: Typical values (e.g., 50 V, 500 mA/channel) and performance depend on exact operating conditions and package version.

16-pin Plastic DIP (PDIP); RoHS-compliant SO-16 version also available.

- Pin count: 16 pins (DIP/SOIC).
- Function: 7-channel Darlington transistor array used as low-side switches. Each input (pins 1–7) drives a corresponding output (pins 16–10). Common emitter to ground (pin 8). COM (pin 9) connects to load supply for the built-in flyback diodes (inductive loads).

Manufacturer: Texas Instruments (TI).
Kind of company: A global semiconductor company that designs and manufactures analog and mixed-signal integrated circuits, embedded processors, and related electronics for various markets (industrial, automotive, consumer, communications).

ULQ2003ADR2G is an 8-channel Darlington sink-driver array for low-side switching from a microcontroller. Common applications: drive relays, solenoids and small motors; sink current for LED indicators/LED matrices; interface logic to higher-power devices in industrial, automotive, and consumer electronics; general-purpose control of inductive and resistive loads.

ULQ2003ADR2G is a 7-channel Darlington transistor array, same family as ULN2003A. Equivalents include:
- ULN2003A / ULN2003APG (Texas Instruments)
- UDN2981A / UDN2982A (8-channel Darlington arrays from NEC/NXP/ON Semiconductor)
- ULN2803 (8-channel Darlington array; if 8 channels are acceptable)
Note: verify pinout/package compatibility and exact current/diode specs in datasheets or distributor cross-reference tables.