Overview
The ULN2003AIPWR is a high-voltage, high-current Darlington transistor array produced by Texas Instruments. This device consists of seven NPN Darlington pairs, each capable of handling high-voltage outputs and high-current loads. It is designed for versatility and ubiquity across a wide range of applications, including driving inductive and resistive loads. The ULN2003AIPWR features common emitter and open collector outputs, along with internal suppression diodes to manage kick-back voltage from inductive loads. This makes it an ideal solution for various interface needs such as solenoids, relays, lamps, small motors, and LEDs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector Current (single output) | 500 | mA |
| High-Voltage Output | 50 | V |
| Input Voltage Compatibility | TTL, 5V CMOS, 3.3V CMOS | - |
| Collector-Emitter Saturation Voltage | 0.9 - 1.7 | V |
| Operating Temperature Range | -40 to 105 | °C |
| Package Type | TSSOP (PW) | - |
| Number of Pins | 16 | - |
Key Features
- High-voltage outputs up to 50V
- High-current capability with each Darlington pair rated at 500mA
- Internal suppression diodes for inductive load protection
- Inputs compatible with TTL and CMOS logic
- Series base resistor for direct operation with TTL or CMOS devices
- Common emitter and open collector outputs
Applications
- Relay drivers
- Hammer drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Line drivers
- Logic buffers
- Solenoids and small motors
Q & A
- What is the maximum collector current per Darlington pair in the ULN2003AIPWR?
The maximum collector current per Darlington pair is 500 mA.
- What is the maximum high-voltage output of the ULN2003AIPWR?
The maximum high-voltage output is 50 V.
- What types of logic inputs are compatible with the ULN2003AIPWR?
The inputs are compatible with TTL and CMOS logic, including 5V and 3.3V CMOS devices.
- What is the purpose of the internal suppression diodes in the ULN2003AIPWR?
The internal suppression diodes are used to protect against kick-back voltage from inductive loads.
- What is the operating temperature range of the ULN2003AIPWR?
The operating temperature range is -40°C to 105°C.
- What package type is the ULN2003AIPWR available in?
The ULN2003AIPWR is available in a TSSOP (PW) package with 16 pins.
- Can the Darlington pairs be paralleled for higher current capability?
- What are some common applications of the ULN2003AIPWR?
- How do the series base resistors in the ULN2003AIPWR facilitate its operation?
The series base resistors allow the device to operate directly with TTL or CMOS devices, converting the GPIO voltage to base current through a 2.7 kΩ resistor.
- What is the collector-emitter saturation voltage range for the ULN2003AIPWR?
The collector-emitter saturation voltage range is 0.9 V to 1.7 V.
