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ULN2803AN
+NomenclatureTRANS 8NPN DARL 50V 0.5A 18DIP
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FabricantTexas Instruments
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Pièce fabricant #ULN2803AN
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En stock4124
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Spécifications
| Attribut | Valeur |
| Part Status | Obsolete |
| Base Product Number | ULN2803 |
| Transistor Type | 8 NPN Darlington |
| Current - Collector (Ic) (Max) | 500mA |
| Voltage - Collector Emitter Breakdown (Max) | 50V |
| Vce Saturation (Max) @ Ib, Ic | 1.6V @ 500µA, 350mA |
| Current - Collector Cutoff (Max) | 50µA |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Through Hole |
| Package | 18-DIP (0.300", 7.62mm) |
| Supplier Device Package | 18-PDIP |
| Packaging | Tube |
Présentation
Equivalent
Equivalent products to the ULN2803AN include:
- ULN2803A (same series, minor variations)
- ULN2804A (higher voltage rating)
- MC1413 (Motorola/NXP equivalent)
- TD62083AP (Toshiba equivalent)
- KA2803 (Samsung equivalent)
These are all 8-channel Darlington transistor arrays with similar pinouts and functionality. Check datasheets for exact specs.
- ULN2803A (same series, minor variations)
- ULN2804A (higher voltage rating)
- MC1413 (Motorola/NXP equivalent)
- TD62083AP (Toshiba equivalent)
- KA2803 (Samsung equivalent)
These are all 8-channel Darlington transistor arrays with similar pinouts and functionality. Check datasheets for exact specs.
Features
The ULN2803AN is a high-voltage, high-current Darlington transistor array with the following key features:
- 8-channel Darlington driver (500mA per channel, 50V max).
- Built-in suppression diodes for inductive load protection.
- TTL/CMOS compatible inputs (5V logic).
- Common-cathode clamp diodes for simplified wiring.
- Wide voltage range (up to 50V output).
- High current gain (min. 1000 per channel).
- DIP-18 package for easy PCB mounting.
Ideal for driving relays, motors, LEDs, and other high-power loads.
- 8-channel Darlington driver (500mA per channel, 50V max).
- Built-in suppression diodes for inductive load protection.
- TTL/CMOS compatible inputs (5V logic).
- Common-cathode clamp diodes for simplified wiring.
- Wide voltage range (up to 50V output).
- High current gain (min. 1000 per channel).
- DIP-18 package for easy PCB mounting.
Ideal for driving relays, motors, LEDs, and other high-power loads.
Pinout
The ULN2803AN is an 18-pin Darlington transistor array IC, commonly used as a relay or stepper motor driver.
### Key Functions:
- 8-channel Darlington pair (each with 500mA, 50V max) for driving inductive loads.
- Inputs (Pins 1-8): Connect to logic signals (TTL/CMOS compatible).
- Outputs (Pins 10-17): Sink current to drive loads (e.g., relays, motors).
- Common cathode (Pin 9): Connects to GND for inductive load flyback protection.
- Suppression diodes: Built-in for back-EMF protection.
### Typical Applications:
- Relay/stepper motor drivers
- LED displays
- Logic buffering
Compact and robust, it simplifies high-current switching in digital circuits.
### Key Functions:
- 8-channel Darlington pair (each with 500mA, 50V max) for driving inductive loads.
- Inputs (Pins 1-8): Connect to logic signals (TTL/CMOS compatible).
- Outputs (Pins 10-17): Sink current to drive loads (e.g., relays, motors).
- Common cathode (Pin 9): Connects to GND for inductive load flyback protection.
- Suppression diodes: Built-in for back-EMF protection.
### Typical Applications:
- Relay/stepper motor drivers
- LED displays
- Logic buffering
Compact and robust, it simplifies high-current switching in digital circuits.
Application
The ULN2803AN is a Darlington transistor array IC commonly used for:
1. Relay & Solenoid Driving – Controls high-current inductive loads.
2. Stepper Motor Control – Acts as a driver for unipolar stepper motors.
3. LED Matrix Driving – Powers multiple LEDs or displays.
4. Logic Level Conversion – Interfaces low-voltage logic (e.g., 5V) with higher-voltage peripherals.
5. Industrial Automation – Switches lamps, valves, or other high-power devices.
Its high current sink capability (500mA per channel) and built-in flyback diodes make it ideal for inductive load applications.
1. Relay & Solenoid Driving – Controls high-current inductive loads.
2. Stepper Motor Control – Acts as a driver for unipolar stepper motors.
3. LED Matrix Driving – Powers multiple LEDs or displays.
4. Logic Level Conversion – Interfaces low-voltage logic (e.g., 5V) with higher-voltage peripherals.
5. Industrial Automation – Switches lamps, valves, or other high-power devices.
Its high current sink capability (500mA per channel) and built-in flyback diodes make it ideal for inductive load applications.
Package
The ULN2803AN is packaged in a 18-pin DIP (Dual In-line Package). This through-hole package is commonly used for easy prototyping and breadboarding. It features a wide body design for better heat dissipation and mechanical stability. The DIP package is suitable for applications requiring manual assembly or socket mounting.
