Texas Instruments' model ULN2003AD is a Darlington transistor, which is a high-voltage, high-current Darlington transistor array. Each device consists of seven NPN Darlington pairs with high voltage outputs with common cathode clamping diodes for switching inductive loads.
The ULN2003ADR is specifically designed for use with 14V to 25V PMOS devices. The device has a Zener diode and resistor in series at each input to control the input current within a safe range. The ULN2003AD has a 2.7kΩ series base resistor per Darlington pair and can operate directly with TTL or 5V CMOS devices.
The collector current rating of a single Darlington pair is 500mA, connecting Darlington pairs in parallel can provide greater current and can be used as relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers and logic buffers.
Features of ULN2003AD
1. 500mA rated collector current (single output);
2. High voltage output: 50V;
3. Clamping diode output;
4. Compatible with various logic inputs;
5. Relay driver application.
Application fields of ULN2003AD
ULN2003AD has a wide range of applications in applications that need to drive high current loads or control multiple devices. Its main application areas are as follows:
1. Stepper motor driver: ULN2003AD can be used to drive various types of stepper motors, such as bipolar and quadrupole stepper motors. Its high voltage and high current output capabilities allow it to drive all phases of the motor.
2. Relay drive: ULN2003AD can be used to drive various types of relays, especially those requiring higher voltage and current. It can control the switching action of the relay by providing the necessary current.
3. Lighting control: ULN2003AD can be used to control LED lights, light strips and other lighting equipment. Its high current output capability enables it to drive these devices directly.
4. Solenoid valve control: ULN2003AD can be used to control various types of solenoid valves, such as pneumatic valves, water flow valves, etc. Its high current output capability and multi-channel design enable it to control multiple solenoid valves simultaneously.
Parameters of ULN2003AD
Brand: Texas Instruments
Product Category: Darlington Transistor
Package/casing: SOIC16_150MIL
Part status: Active
Series: Original
Whether lead-free: Yes
Collector-emitter breakdown voltage Vce(Max): 50V
Installation type: SMT
Working temperature: -20℃~+70℃
Configuration: low end
Forward voltage (Vf) (typ.): 1.7V
Length x Width/Dimensions: 9.90 x 3.89mm
Height: 1.75mm
Number of pins: 16Pin
Component Lifecycle: Active
Collector-emitter voltage VCEO: 50V
Collector current Ic: 100mA
Pin diagram of ULN2003AD
Schematic of ULN2003AD
Package diagram of ULN2003AD
If you need to purchase this model or want to know more information, please contact us via the following email:
Acquaintance product recommendation：
ULN2003ADR2G
ULN2003AD16-U
ULN2003ADRG3
ULN2003ADE4
ULN2003ADRG3
ULN2003ADRE4