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ULN2804A Darlington transistor array
₦500.00
Description:
The ULN2804A is a high-voltage, high-current Darlington transistor array. It consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. This IC is commonly used in applications requiring high-current switching such as relays, motors, lamps, and LED displays.
Key Features:
- Seven Darlingtons per package
- Output current: 500 mA (continuous) per channel, 600 mA (peak)
- High-voltage outputs: 50V
- Inputs compatible with TTL and CMOS logic
- Common-cathode clamp diodes for inductive load driving
- Input resistors for improved noise immunity
- Output flyback diodes for inductive transient suppression
Technical Specifications:
- Package Type: DIP-18
- Output Voltage: 50V
- Output Current (Continuous): 500 mA per channel
- Output Current (Peak): 600 mA per channel
- Input Voltage (High): 2.4V (min)
- Input Voltage (Low): 0.8V (max)
- Operating Temperature Range: -20°C to +85°C
- Dimensions: 19.81 mm x 6.35 mm x 4.57 mm
- Weight: 1.37 g
Applications:
- Relay Drivers: Used to drive relay coils in control systems.
- Motor Drivers: Controls small motors in robotics and automation.
- Lamp Drivers: Switches on/off lamps and indicators in automotive and industrial applications.
- LED Display Drivers: Drives LED segments in alphanumeric displays.
- Sensor Interface: Interfaces with sensors for signal amplification and conditioning.
Datasheet:
For detailed technical information, refer to the ULN2804A Datasheet.
Category: Darlington Transistor Arrays
In stock
The ULN2801A, ULN2802A, ULN2803A and
ULN2804A each contain eight Darlington
transistors with common emitters and integral
suppression diodes for inductive loads. Each
Darlington features a peak load current rating of
600 mA (500 mA continuous) and can withstand
at least 50 V in the OFF state. Outputs may be
paralleled for higher current capability.
Four versions are available to simplify interfacing
to standard logic families: the ULN2801A is
designed for general purpose applications with a
current limit resistor; the ULN2802A has a 10.5
k input resistor and Zener for 14-25 V PMOS;
the ULN2803A has a 2.7 k input resistor for 5 V
TTL and CMOS; the ULN2804A has a 10.5 k
input resistor for 6-15 V CMOS.
All types are supplied in an 18-lead plastic DIP
with a copper lead form and feature the
convenient input-opposite-output pinout to
simplify board layout.
Eight Darlington transistors with common
emitters
Output current to 500 mA
Output voltage to 50 V
Integral suppression diodes
Versions for all popular logic families
Output can be paralleled
Inputs pinned opposite outputs to simplify
board layout
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