Overview
The ULN2003APWR is a high-voltage, high-current Darlington transistor array produced by Texas Instruments. This device consists of seven NPN Darlington pairs, each featuring high-voltage outputs with common-cathode clamp diodes, which are essential for switching inductive loads. The ULN2003APWR is designed to handle high-current applications with a single Darlington pair rated for 500mA collector current, and the pairs can be paralleled for even higher current capability. This component is compatible with various types of logic inputs and is particularly suited for relay-driver applications among others.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-TSSOP (0.173, 4.40mm Width) |
| Pins | 16 |
| Operating Temperature Range (°C) | -40 to 70 |
| Collector-Current Rating (Single Output) | 500mA |
| High-Voltage Outputs | 50V |
| Output Clamp Diodes | Yes |
| Input Compatibility | TTL or 5V CMOS devices |
| Series Base Resistor | 2.7kΩ |
| Peak Reflow Temperature (°C) | 260 |
Key Features
- 500mA-rated collector current per single Darlington pair, with the ability to parallel pairs for higher current capability.
- High-voltage outputs up to 50V.
- Output clamp diodes for protecting against inductive load kick-back.
- Inputs compatible with various types of logic, including TTL and 5V CMOS devices.
- Each input has a 2.7kΩ series base resistor for safe operation.
- Suitable for relay-driver applications, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers.
Applications
- Relay drivers: Ideal for controlling relays in various industrial and automotive applications.
- Hammer drivers: Used in applications requiring high current pulses, such as in printers and other mechanical devices.
- Lamp drivers: Suitable for driving LED and gas discharge lamps.
- Display drivers: Used in driving displays that require high current, such as LED and gas discharge displays.
- Line drivers: For driving long lines or cables in communication systems.
- Logic buffers: Acts as a buffer between logic circuits and high-current loads.
Q & A
- What is the collector-current rating of a single Darlington pair in the ULN2003APWR?
The collector-current rating of a single Darlington pair is 500mA.
- What is the maximum high-voltage output of the ULN2003APWR?
The maximum high-voltage output is 50V.
- Does the ULN2003APWR have output clamp diodes?
Yes, the ULN2003APWR has output clamp diodes to protect against inductive load kick-back.
- What types of logic inputs are compatible with the ULN2003APWR?
The inputs are compatible with TTL and 5V CMOS devices.
- What is the series base resistor value in the ULN2003APWR?
The series base resistor value is 2.7kΩ.
- What is the operating temperature range of the ULN2003APWR?
The operating temperature range is -40°C to 70°C.
- What is the peak reflow temperature for the ULN2003APWR?
The peak reflow temperature is 260°C.
- Can the Darlington pairs in the ULN2003APWR be paralleled for higher current capability?
Yes, the Darlington pairs can be paralleled for higher current capability.
- What are some common applications of the ULN2003APWR?
Common applications include relay drivers, hammer drivers, lamp drivers, display drivers, line drivers, and logic buffers.
- Is the ULN2003APWR RoHS compliant?
Yes, the ULN2003APWR is RoHS compliant.
