Eight channel Darlington transistor array BL ULN2803 designed for driving relays solenoids and LED displays
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Product Description
Product Overview
The ULN2803 is a high-voltage, high-current Darlington transistor array featuring eight open-collector common-emitter pairs, each rated at 500mA. Designed for driving a wide range of inductive loads, it includes output clamp diodes and inputs compatible with various logic types. Its pinout opposition simplifies board layout, making it suitable for applications such as relay drivers, solenoids, DC motors, LED displays, filament lamps, thermal print-heads, and high-power buffers. Available in SOP18 and QFN20(4x4) packages.Product Attributes
- Brand: Belling
- Model Series: ULN2803
Technical Specifications
| Model | Package | Collector Current (Single Output) | High-Voltage Outputs | Input Compatibility | Output Clamp Diodes | Ordering Information |
|---|---|---|---|---|---|---|
| ULN2803 | SOP18 | 500 mA | 50 V | Various Types of Logic | Included | ULN2803 (Tape and Reel, 1500) |
| ULN2803QN | QFN20(4x4) | 500 mA | 50 V | Various Types of Logic | Included | ULN2803QN (Tape and Reel, 3000) |
Electrical Characteristics
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCE(sat) (Collector-emitter saturation voltage) | II = 250 A, IC = 100 mA | -- | 0.9 | 1.1 | V |
| VCE(sat) (Collector-emitter saturation voltage) | II = 350 A, IC = 200 mA | -- | 1 | 1.3 | V |
| VCE(sat) (Collector-emitter saturation voltage) | II = 500 A, IC = 350 mA | -- | 1.2 | 1.6 | V |
| ICEX (Collector cutoff current) | VCE = 50 V, II = 0 | -- | -- | 50 | A |
| ICEX (Collector cutoff current) | VCE = 50 V, TA = +105C, II = 0 | -- | -- | 100 | A |
| VF (Clamp forward voltage) | IF = 350 mA | -- | 1.7 | 2 | V |
| II (Input current) | VI = 3.85 V | -- | 0.93 | 1.35 | mA |
| IR (Clamp reverse current) | VR = 50 V | -- | -- | 50 | A |
| Ci (Input capacitance) | VI = 0, f = 1 MHz | -- | 15 | 25 | pF |
Switching Characteristics
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| tPLH (Propagation delay time, low- to high-level output) | See Figure 9 | 0.25 | -- | 1 | s |
| tPHL (Propagation delay time, high- to low-level output) | See Figure 9 | 0.25 | -- | 1 | s |
| VOH (High-level output voltage after switching) | VS = 50 V, IO = 300 mA, See Figure 9 | VS20 | -- | -- | mV |
Absolute Maximum Ratings
| Symbol | Parameter | Min | Max | Unit |
|---|---|---|---|---|
| VCC | Collector to emitter voltage | -- | 50 | V |
| VR | Clamp diode reverse voltage | -- | 50 | V |
| VI | Input voltage | -- | 30 | V |
| ICP | Peak collector current | -- | 500 | mA |
| IOK | Output clamp current | -- | 500 | mA |
| ITE | Total emitter-terminal current | -2.5 | -- | A |
| TA | Operating free-air temperature range | -30 | +105 | C |
| TJ | Operating virtual junction temperature | -- | 150 | C |
| TSTG | Storage temperature range | -40 | 150 | C |
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