Description
The ULN2003BDR is a high-power Darlington array relay driver integrated circuit from Texas Instruments. It's designed for driving relays, stepper motors, and other high-current loads with improved output leakage performance over the previous ULN2003A model. The IC features seven NPN darlington pairs with 1:1 configuration, allowing it to handle up to 500mA per channel. Its high-voltage outputs can withstand up to 50V, and includes built-in output clamp diodes for safe operation.
The device is widely used in various applications such as industrial control systems, robotics, automation equipment, automotive systems, power supplies, and LED displays. It's a reliable solution for relay-driver applications that require high-current capabilities and ease of use with various logic levels.
Package
The package type of ULN2003BDR is SOIC (D)-16.
Manufacturer
The manufacturer of the ULN2003BDR is Texas Instruments (TI). Texas Instruments is a leading semiconductor company that designs, manufactures, and tests semiconductors and related technologies. They are known for their wide range of products, including analog and embedded processing chips, as well as other electronic components.
Applications
According to the product information, the application areas of ULN2003BDR include:
- Driving relays, stepper motors, and other high-current loads
- Industrial control systems
- Robotics and automation equipment
- Automotive applications
- Power supplies
- LED displays
Equivalent
The equivalent products of ULN2003BDR are:
- STP16CHA
- NPNL2003A
- L293D
- TIP42C
These ICs are also relay drivers with similar features, such as high-voltage outputs and output clamp diodes. They can be used in applications like driving relays, stepper motors, and other high-current loads.
Specifications
| Category |
Integrated Circuits (ICs)Power Management (PMIC)Power Distribution Switches, Load Drivers |
Switch Type |
Relay, Solenoid Driver |
| Number of Outputs |
7 |
Ratio - Input:Output |
1:1 |
| Output Configuration |
Low Side |
Output Type |
NPN |
| Interface |
Parallel |
Voltage - Load |
50V (Max) |
| Voltage - Supply (Vcc/Vdd) |
Not Required |
Current - Output (Max) |
500mA |
| Rds On (Typ) |
- |
Input Type |
Inverting |
| Features |
- |
Fault Protection |
- |
| Operating Temperature |
-40°C ~ 105°C (TA) |
Mounting Type |
Surface Mount |
| Base Product Number |
ULN2003 |
Package/Case |
SOP16
|
ULN2003BDR FAQs
1.Q: Are there related parts to the ULN2003BDR?
A: Similar devices include ULN2003A (non-LTB status) or ULN2803 (8-channel version).
2.Q: What is the typical collector-emitter saturation voltage (Vce(sat)) of the ULN2003BDR?
A: Vce(sat) ranges from 1.1V (100mA) to 1.6V (350mA), depending on current.
3.Q: Does the ULN2003BDR meet automotive or industry certifications?
A: No, it lacks PPAP/AEC-Q automotive certification (marked "Automotive: No") and is not RoHS-exempt (SVHC: Yes).
4.Q: What package does the ULN2003BDR use?
A: It comes in a 16-pin SOIC package (3.90mm width, 1.5mm max height) with gull-wing leads for surface mounting.
5.Q: What are the recommended operating conditions for the ULN2003BDR?
A: Operate at 5V logic input, 50V max output, and ambient temperatures between -40°C to +105°C. Ensure Iout ≤ 500mA per channel.
6.Q: What is the maximum collector-emitter voltage (Vce) of the ULN2003BDR?
A: The absolute maximum Vce rating is 50V per channel.
7.Q: What are typical applications for the ULN2003BDR?
A: It’s commonly used to drive relays, stepper motors, LED displays, and other high-current loads in industrial/consumer systems.
8.Q: What are the key features of the ULN2003BDR?
A: Key features include 50V/500mA Darlington arrays, built-in clamp diodes for inductive loads, and compatibility with TTL/CMOS logic. It has 7 channels and operates from -40°C to +105°C.
9.Q: What is the pinout configuration of the ULN2003BDR?
A: The ULN2003BDR is a 16-pin SOIC device with 7 Darlington pairs (inputs: pins 1–7, outputs: pins 10–16). Pins 8 (GND) and 9 (COM) are common for ground and flyback diode connection, respectively.
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