High current eight channel Darlington array GR ULN2803 designed for relay motor and LED display driver circuits
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. This device is 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.
Product Attributes
- Brand: ULN2803 (Implied from datasheet title)
- Origin: (Jiangsu Guorui Microelectronics Co., Ltd.)
- Material: Not specified
- Color: Not specified
- Certifications: Not specified
Technical Specifications
| Parameter | Symbol | Limit Value | Unit | Conditions |
|---|---|---|---|---|
| Input Voltage | VIN | 30 | V | |
| Output Off-State Voltage | VCE | 50 | V | Ta=25 |
| Maximum Output Current | IC | 500 | mA | Ta=25 |
| Base Current | IB | 25 | mA | |
| Operating Temperature | TA | -4085 | ||
| Storage Temperature | TS | -65150 | ||
| Soldering Temperature | TW | 260,10s | ||
| Output Leakage Current | ICEX | 0-50 | A | VCE =50V, Ta=25 |
| Output Leakage Current | ICEX | 0-100 | A | Ta=85 |
| Output Low Level Voltage | VCE(SAT) | 1.0-1.6 | V | IOUT =350mA, IIN=500A |
| Output Low Level Voltage | VCE(SAT) | 0.9-1.3 | V | IOUT =200mA, IIN=350A |
| Output Low Level Voltage | VCE(SAT) | 0.8-1.1 | V | IOUT =100mA, IIN=250A |
| 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) | 1.8-2.4 | V | VCE =2V, IOUT =200mA |
| Input Voltage (On) | VIN(ON) | 1.85-2.7 | V | IOUT =250mA |
| Input Voltage (On) | VIN(ON) | 1.9-3.0 | V | IOUT =300mA |
| Clamp Diode Reverse Leakage Current | IR | 0-50 | A | VR=50V, Ta=25 |
| Clamp Diode Reverse Leakage Current | IR | 0-100 | A | Ta=85 |
| Clamp Diode 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 |
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