Overview
The ULN2003ANSRE4, 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 ULN2003A is designed to interface with various logic families, including TTL and CMOS, making it compatible with supply voltages of 5 V or 3.3 V. The device features common emitter and open collector outputs, along with suppression diodes for inductive loads, enhancing its reliability and performance in diverse applications.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage (Vo) | 50 | V | ||
| Input Voltage (Vin) | 30 | V | ||
| Continuous Collector Current (Ic) | 500 | mA | ||
| Continuous Base Current (Ib) | 25 | mA | ||
| Operating Ambient Temperature Range (Tamb) | -20 | 85 | °C | |
| Storage Temperature Range (Tstg) | -55 | 150 | °C | |
| Junction Temperature (Tj) | 150 | °C | ||
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.9 | 1.2 | 1.7 | V |
| Input Current (Ii(on)) | 0.93 | 1.35 | mA | |
| Off-State Input Current (Ii(off)) | 30 | 65 | μA |
Key Features
- Seven high-voltage, high-current NPN Darlington transistor pairs, each capable of sinking up to 500 mA of current.
- Inputs compatible with TTL and CMOS logic families, operating at supply voltages of 5 V or 3.3 V.
- Common emitter and open collector outputs with suppression diodes for inductive loads.
- Series base resistor (2.7 kΩ) for each Darlington pair, allowing direct operation with TTL or CMOS devices.
- High-voltage outputs up to 50 V.
- Available in 16-pin plastic DIP and SO-16 packages.
Applications
- Relay drivers
- Solenoid drivers
- Lamp drivers (including LED displays and filament lamps)
- DC motor drivers
- Thermal print head drivers
- High power buffers and line drivers
- Logic buffers
Q & A
- What is the maximum collector current rating for the ULN2003A?
The maximum collector current rating for the ULN2003A is 500 mA per Darlington pair.
- What are the compatible logic families for the ULN2003A?
The ULN2003A is compatible with TTL and CMOS logic families.
- What is the maximum operating ambient temperature for the ULN2003A?
The maximum operating ambient temperature for the ULN2003A is 85°C.
- What type of packages are available for the ULN2003A?
The ULN2003A is available in 16-pin plastic DIP and SO-16 packages.
- What is the purpose of the suppression diodes in the ULN2003A?
The suppression diodes are used to suppress the kick-back voltage from inductive loads.
- Can the Darlington pairs be paralleled for higher current capability?
Yes, the Darlington pairs can be paralleled to achieve higher current capability.
- What is the maximum junction temperature for the ULN2003A?
The maximum junction temperature for the ULN2003A is 150°C.
- What is the typical input current for the ULN2003A when operating with TTL logic?
The typical input current for the ULN2003A when operating with TTL logic is around 0.93 to 1.35 mA.
- What are some common applications of the ULN2003A?
Common applications include relay drivers, solenoid drivers, lamp drivers, DC motor drivers, and thermal print head drivers.
- What is the thermal resistance junction-ambient for the DIP16 package?
The thermal resistance junction-ambient for the DIP16 package is up to 70 °C/W.
