Overview
The ULN2003AINSR, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This device consists of seven NPN Darlington pairs, each featuring high-voltage outputs with common-cathode clamp diodes designed for switching inductive loads. The ULN2003A is widely used in various applications due to its versatility and robust performance characteristics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector Current (single output) | 500 mA | A |
| Peak Collector Current | 600 mA | A |
| Output Voltage | 50 V | V |
| Operating Temperature Range | -40 to 70 | °C |
| Input Compatibility | TTL, 5V CMOS, PMOS, DTL | |
| Series Base Resistor | 2.7 kΩ | Ω |
| Package Type | SOIC (D), PDIP, TSSOP16 | |
| Pins | 16 |
Key Features
- Seven NPN Darlington pairs per package
- High-voltage outputs: 50 V
- Output clamp diodes for inductive load protection
- Inputs compatible with TTL, 5V CMOS, PMOS, and DTL logic
- Collector current rating of 500 mA per Darlington pair (600 mA peak)
- Darlington pairs can be paralleled for higher current capability
- Integrated suppression diodes for inductive loads
- Inputs and outputs are pinned opposite each other to simplify board layout
Applications
- Relay drivers
- Hammer drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Line drivers
- Logic buffers
- Solenoids, DC motors, thermal printheads, and high-power buffers
Q & A
- What is the collector current rating of a single Darlington pair in the ULN2003AINSR?
The collector current rating of a single Darlington pair is 500 mA, with a peak current of 600 mA.
- What is the output voltage capability of the ULN2003AINSR?
The output voltage capability is 50 V.
- What types of logic are the inputs of the ULN2003AINSR compatible with?
The inputs are compatible with TTL, 5V CMOS, PMOS, and DTL logic.
- What is the purpose of the output clamp diodes in the ULN2003AINSR?
The output clamp diodes are used to suppress the kick-back voltage from inductive loads when the NPN drivers are turned off.
- Can the Darlington pairs in the ULN2003AINSR be paralleled for higher current capability?
Yes, the Darlington pairs can be paralleled to achieve higher current capability.
- What are some common applications of the ULN2003AINSR?
Common applications include relay drivers, hammer drivers, lamp drivers, display drivers, line drivers, and logic buffers.
- What is the operating temperature range of the ULN2003AINSR?
The operating temperature range is -40°C to 70°C.
- What package types are available for the ULN2003AINSR?
The device is available in SOIC (D), PDIP, and TSSOP16 packages.
- How many pins does the ULN2003AINSR have?
The device has 16 pins.
- What is the series base resistor value in the ULN2003AINSR?
The series base resistor value is 2.7 kΩ.
