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SKU: PROD0139
The ULN2803A is a high-voltage, high-current Darlington transistor array. This DIP chip contains 8 drivers that can sink 500mA from a 50V supply and has kickback diodes included inside for driving coils.
The ULN2803A is a high-voltage, high-current Darlington transistor array. The device consists of eight NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of each Darlington pair is 500 mA.
This DIP chip contains 8 drivers that can sink 500mA from a 50V supply and has kickback diodes included inside for driving coils. This will let your little microcontroller or microcomputer power solenoids, DC motors (in one direction) and unipolar stepper motors.
Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The ULN2803A has a 2.7-k series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.
TECHNICAL DETAILS
Product Category Darlington Transistors
Configuration Octal
Transistor Polarity NPN
Collector-Emitter Voltage VCEO Max 50V
Maximum DC Collector Current 500mA
Power Dissipation Pd 0.76W
Package/Case DIP-18
Maximum Operating Temperature 85C
DC Collector/Base Gain hfe Min 1000
Minimum Operating Temperature -40C
Output Type TTL
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