Overview
The ULN2003D1, produced by STMicroelectronics, is a high-voltage, high-current Darlington array. This device contains seven open collector Darlington pairs with common emitters, making it highly versatile for various applications. The ULN2003D1 is specifically designed to interface with 5 V TTL and CMOS logic families, making it compatible with a wide range of digital systems. Each channel of the ULN2003D1 is rated at 500 mA and can withstand peak currents of 600 mA, with integrated suppression diodes for driving inductive loads. The device is available in a small outline package (SO-16) and also in other packages such as DIP-16 and TSSOP-16, offering flexibility in design and layout.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current per Driver | 500 mA (600 mA peak) | mA |
| Output Voltage | 50 | V |
| Input Voltage (for ULN2003) | 5 V | V |
| Continuous Collector Current | 500 | mA |
| Continuous Base Current | 25 | mA |
| Operating Ambient Temperature Range | -40 to 85 | °C |
| Storage Temperature Range | -55 to 150 | °C |
| Junction Temperature | 150 | °C |
| Thermal Resistance Junction-Ambient (SO-16) | 64.7 | °C/W |
Key Features
- Seven Darlington pairs per package
- Output current of 500 mA per driver (600 mA peak)
- Output voltage of 50 V
- Integrated suppression diodes for inductive loads
- Outputs can be paralleled for higher current
- TTL/CMOS/PMOS/DTL compatible inputs
- Input pins placed opposite to output pins to simplify board layout
Applications
The ULN2003D1 is versatile and can be used in a wide range of applications, including:
- Driving solenoids and relays
- Controlling DC motors
- Driving LED displays and filament lamps
- Thermal printheads
- High-power buffers
Q & A
- What is the output current rating of the ULN2003D1?
The output current rating of the ULN2003D1 is 500 mA per driver, with a peak current of 600 mA.
- What is the maximum output voltage of the ULN2003D1?
The maximum output voltage of the ULN2003D1 is 50 V.
- What types of logic families does the ULN2003D1 interface with?
The ULN2003D1 interfaces with 5 V TTL and CMOS logic families.
- What is the purpose of the integrated suppression diodes in the ULN2003D1?
The integrated suppression diodes are included for driving inductive loads.
- Can the outputs of the ULN2003D1 be paralleled for higher current?
- What are the available package types for the ULN2003D1?
The ULN2003D1 is available in SO-16, DIP-16, and TSSOP-16 packages.
- What is the operating ambient temperature range of the ULN2003D1?
The operating ambient temperature range of the ULN2003D1 is -40 to 85°C.
- What is the junction temperature limit of the ULN2003D1?
The junction temperature limit of the ULN2003D1 is 150°C.
- What types of loads can the ULN2003D1 drive?
The ULN2003D1 can drive a wide range of loads including solenoids, relays, DC motors, LED displays, filament lamps, thermal printheads, and high-power buffers.
- How does the pin layout of the ULN2003D1 simplify board design?
The input pins are placed opposite the output pins to simplify board layout.
