Overview
The ULN2003ADRG3, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This device is part of the ULN2003A series and is known for its versatility and wide range of applications. It consists of seven NPN Darlington transistor pairs, each capable of sinking up to 500 mA of current. The ULN2003ADRG3 is designed to operate with various types of logic, including TTL and CMOS, at supply voltages of 5 V or 3.3 V, making it suitable for a variety of interface needs such as driving solenoids, relays, lamps, small motors, and LEDs.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|
| Collector-Current Rating | - | - | 500 | mA | Per channel |
| High-Voltage Output | - | - | 50 | V | - |
| On-state Input Voltage (VI(on)) | 2.7 | - | 3 | V | IC = 200 mA, VCE = 2 V |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.9 | 1.2 | 1.7 | V | II = 250 μA, IC = 100 mA |
| Off-state Input Current (II(off)) | 30 | - | 65 | μA | VCE = 50 V, IC = 500 μA |
| Operating Temperature Range | -40 | - | 70 | °C | - |
| Package Type | - | - | SOIC (D) | - | 16 pins |
Key Features
- High-voltage outputs up to 50 V
- High-current capability with each Darlington pair rated at 500 mA
- Inputs compatible with TTL and CMOS logic at 5 V or 3.3 V
- Common-cathode clamp diodes for switching inductive loads
- Series base resistor for each Darlington pair, allowing direct operation with logic devices
- High-current gain (β2) up to 10,000 A/A at certain currents
- Low input current requirements due to high β
Applications
- Relay drivers
- Hammer drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Line drivers
- Logic buffers
- Solenoids and small motors
- Inductive load drivers such as motors and solenoids
Q & A
- What is the ULN2003ADRG3?
The ULN2003ADRG3 is a high-voltage, high-current Darlington transistor array produced by Texas Instruments.
- How many Darlington transistor pairs does the ULN2003ADRG3 contain?
The ULN2003ADRG3 contains seven NPN Darlington transistor pairs.
- What is the collector-current rating of each Darlington pair?
Each Darlington pair is rated at 500 mA.
- What is the high-voltage output capability of the ULN2003ADRG3?
The device has high-voltage outputs up to 50 V.
- Is the ULN2003ADRG3 compatible with TTL and CMOS logic?
- What type of loads can the ULN2003ADRG3 drive?
The ULN2003ADRG3 can drive inductive loads such as motors, solenoids, and relays, as well as other loads like lamps and LEDs.
- What is the purpose of the clamp diodes in the ULN2003ADRG3?
The clamp diodes are used to suppress the kick-back voltage from inductive loads.
- What is the operating temperature range of the ULN2003ADRG3?
The operating temperature range is from -40°C to 70°C.
- What package type is the ULN2003ADRG3 available in?
The ULN2003ADRG3 is available in a 16-pin SOIC (D) package.
- Is the ULN2003ADRG3 still in production?
No, the ULN2003ADRG3 is obsolete and no longer in production. New designs should consider an alternate product.
