Eight channel high current Darlington transistor array LANKE ULN2803AG for in relay and stepper motor drivers
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Product Description
Product Description
The ULN2803A is a monolithic high-voltage, high-current Darlington transistor array. It consists of eight independent Darlington driver circuits, each with a built-in suppression diode for inductive loads like relays and stepper motors. Each Darlington pair can output 500mA, and parallel connections allow for higher current capabilities. This array is suitable for driving relays, lighting, LED displays, stepper motors, and as logic buffers. With a 2.7K base resistor in each channel, it can interface directly with TTL/CMOS logic circuits operating at 5V, eliminating the need for standard logic buffers.
Product Attributes
- Brand: (LanKe Semiconductor)
- Origin: Shenzhen, China
- Temperature Range: -40 ~ +85
- Certifications: Pb-Free
Technical Specifications
| Parameter | Symbol | Conditions | Min | Typical | Max | Unit | Notes |
| Absolute Maximum Ratings | |||||||
| Collector-Emitter Voltage | VCE | -0.5 | 50 | V | |||
| COM Terminal Voltage | VCOM | 50 | V | ||||
| Input Voltage | VI | -0.5 | 30 | V | |||
| Collector Peak Current | ICP | per channel | 500 | mA/ch | |||
| Output Clamp Diode Peak Forward Current | IOK | 500 | mA | ||||
| Total Emitter Peak Current | IET | -2.5 | A | ||||
| Maximum Operating Junction Temperature | TJ | 150 | (2) | ||||
| Storage Temperature Range | Tstg | -60 | +150 | ||||
| Power Dissipation (SOP18) | PD | 0.54/0.625(3) | W | (1), (2), (3) | |||
| Power Dissipation (QFN20L) | PD | 1.3 | W | (1), (2) | |||
| Recommended Operating Conditions | |||||||
| Collector-Emitter Voltage | VCE | 0 | 50 | V | |||
| Output Current | IOUT | TPW=25ms, TA=85, TJ=120, Duty=10% | 0 | 233 | mA/ch | ||
| Output Current | IOUT | Duty=50% | 0 | 70 | mA/ch | ||
| Control Signal Input Voltage | VIN | 0 | 24 | V | |||
| Input Voltage (Output ON) | VIN(ON) | Iout=400mA, hFE=800 | 2.8 | 24 | V | ||
| Input Voltage (Output OFF) | VIN(OFF) | 0 | 0.7 | V | |||
| Clamp Diode Reverse Voltage | VR | 50 | V | ||||
| Clamp Diode Peak Forward Current | IF | 350 | mA | ||||
| Operating Temperature Range | TA | -40 | +85 | ||||
| Power Dissipation (SOP18) | PD | TA= 85 | -- | 0.325 | W | ||
| Power Dissipation (QFN20L) | PD | TA= 85 | -- | 0.6 | W | ||
| Electrical Characteristics | |||||||
| Turn-ON Input Voltage | VI(ON) | VCE=2V, IC=200mA | 1.9 | 2.4 | V | Fig 4 | |
| Turn-ON Input Voltage | VI(ON) | IC=250mA | 2.0 | 2.7 | V | Fig 4 | |
| Turn-ON Input Voltage | VI(ON) | IC=300mA | 2.1 | 3 | V | Fig 4 | |
| Collector-Emitter Saturation Voltage | VCE(SAT) | VI=2.4V, IC=30mA | 0.78 | V | Fig 5 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | VI=2.4V, IC=60mA | 0.82 | V | Fig 5 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | VI=2.4V, IC=120mA | 0.9 | V | Fig 5 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | VI=2.4V, IC=240mA | 1.1 | V | Fig 5 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | VI=2.4V, IC=350mA | 1.25 | V | Fig 5 | ||
| Clamp Diode Forward Voltage | VF | IF=350mA | 1.4 | 1.6 | V | Fig 8 | |
| Collector OFF-State Leakage Current | ICEX | VCE=50V, II=0 | 50 | A | Fig 1 | ||
| Collector OFF-State Leakage Current | ICEX | VCE=50V, TA=85, VI=0V | 100 | A | Fig 2 | ||
| Input Current | II | VIN=12V, IC=60mA | 4 | mA | Fig 4 | ||
| Input Current | II | VIN=6V | 1.7 | mA | Fig 4 | ||
| Input Current | II | VIN=4.5V | 1.1 | mA | Fig 4 | ||
| Input Current | II | VIN=2.4V | 0.35 | mA | Fig 4 | ||
| Clamp Diode Reverse Current | IR | VR=50V | 100 | A | Fig 7 | ||
| Input Capacitance | CIN | 15 | pF | ||||
| Propagation Delay Low-to-High | tPLH | VL=12V, RL=45 | 0.15 | 1 | s | Fig 9 | |
| Propagation Delay High-to-Low | tPHL | VL=12V, RL=45 | 0.15 | 1 | s | Fig 9 | |
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