Overview
The ULN2803ADW is a high-voltage, high-current Darlington transistor array produced by Texas Instruments. This device is part of the ULN2803A series and is packaged in a SOIC (DW) package. It is designed to handle high-voltage outputs and is compatible with various types of logic, including TTL and 5-V CMOS devices. The ULN2803ADW is widely used in applications requiring high current and voltage handling capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Current Rating (Single Output) | 500 | mA |
| High-Voltage Outputs | 50 | V |
| Series Base Resistor | 2.7 kΩ | |
| Operating Temperature Range | -40 to 85 | °C |
| Collector-Emitter Saturation Voltage | 1.3 - 1.6 | V |
| Propagation Delay Time (Low to High) | 130 | ns |
| Propagation Delay Time (High to Low) | 20 | ns |
| Input Capacitance | 15 - 25 | pF |
Key Features
- Eight npn Darlington pairs with high-voltage outputs and common-cathode clamp diodes for switching inductive loads.
- Inputs compatible with TTL and 5-V CMOS logic.
- 2.7 kΩ series base resistor for each Darlington pair.
- High current capability with the option to connect Darlington pairs in parallel.
- Output clamp diodes for protection against inductive loads.
Applications
- Relay drivers
- Hammer drivers
- Lamp drivers
- Display drivers (LED and gas discharge)
- Line drivers
- Logic buffers
Q & A
- What is the collector-current rating of the ULN2803ADW?
The collector-current rating of the ULN2803ADW is 500 mA per single output. - What is the maximum high-voltage output of the ULN2803ADW?
The maximum high-voltage output is 50 V. - Is the ULN2803ADW compatible with TTL and CMOS logic?
Yes, the ULN2803ADW is compatible with TTL and 5-V CMOS logic. - What is the operating temperature range of the ULN2803ADW?
The operating temperature range is -40°C to 85°C. - What type of protection does the ULN2803ADW have for inductive loads?
The ULN2803ADW has common-cathode clamp diodes for protection against inductive loads. - Can the Darlington pairs be connected in parallel for higher current capability?
Yes, the Darlington pairs can be connected in parallel for higher current capability. - What is the typical propagation delay time from low to high level output?
The typical propagation delay time from low to high level output is 130 ns. - What is the input capacitance of the ULN2803ADW?
The input capacitance is 15 to 25 pF. - What are some common applications of the ULN2803ADW?
Common applications include relay drivers, hammer drivers, lamp drivers, display drivers, line drivers, and logic buffers. - What package type is the ULN2803ADW available in?
The ULN2803ADW is available in a SOIC (DW) package.
