High current eight channel Darlington array GR ULN2803S suitable for TTL CMOS logic and inductive load drivers
Product Overview
The ULN2803 is a monolithic integrated high-voltage, high-current Darlington array featuring eight independent Darlington driver channels. Each channel includes a common emitter resistor and a clamp diode for inductive load suppression, making it suitable for driving relays, stepping motors, and other inductive loads. By paralleling Darlington pairs, higher output current capability can be achieved. The ULN2803 is widely used in relay drivers, lighting drivers, display drivers (LED), stepping motor drivers, and logic buffers. Each Darlington channel has a 2.7K base resistor, allowing direct connection to TTL/CMOS circuits with a 5V operating voltage and direct processing of data handled by standard logic buffers.
Product Attributes
- Brand: ULN2803
- Origin:
Technical Specifications
| Parameter | Symbol | Value | Unit | Conditions |
|---|---|---|---|---|
| Input Voltage | VIN | 0~30 | V | Ta=25 |
| Output Off-State Voltage | VCE | 50 | V | Ta=25 |
| Maximum Output Current | IC | 500 | mA | Ta=25 |
| Input Compatibility | TTL/CMOS logic signals | |||
| Output Leakage Current | ICEX | 0~50 | A | VCE =50V, Ta=25 |
| Output Low Level Voltage | VCE(SAT) | 0.8~1.6 | V | IOUT =100mA to 350mA, IIN=250A to 500A |
| Input Current | IIN(ON) | 0.7~1.35 | mA | VIN=3.85V, IOUT =350mA |
| Input Current (Off) | IIN(OFF) | 50~63 | A | IOUT =500A, Ta=85 |
| Input Voltage (On) | VIN(ON) | 1.8~3.0 | V | VCE =2V, IOUT =200mA to 300mA |
| Clamp Diode Reverse Leakage Current | IR | 0~50 | A | VR=50V, Ta=25 |
| Clamp Diode Forward Voltage Drop | VF | 1.7~2.0 | V | IF=350mA, Ta=25 |
| Turn-on Delay Time | tON | 0.1~1 | s | VOUT=50V,RL=125,CL=15pF |
| Turn-off Delay Time | tOFF | 0.2~1 | s | VOUT=50V,RL=125,CL=15pF |
| Operating Temperature | TA | -40~85 | ||
| Storage Temperature | TS | -65~150 | ||
| Soldering Temperature | TW | 260 | 10s | |
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