ULN2002A是TI公司的一款外围驱动器和传动器产品，ULN2002A是高电压、大电流达林顿晶体管阵列，本页介绍了ULN2002A的产品说明、应用、特性等，并给出了与ULN2002A相关的TI元器件型号供参考。
ULN2002A - 高电压、大电流达林顿晶体管阵列 - 外围驱动器和传动器 - 其它接口 - TI公司（Texas Instruments，德州仪器）
- 500-mA-Rated Collector Current (Single Output)
- High-Voltage Outputs: 50 V
- Output Clamp Diodes
- Inputs Compatible With Various Types of Logic
- Relay-Driver Applications
- Relay Drivers
- Stepper and DC Brushed Motor Drivers
- Lamp Drivers
- Display Drivers (LED and Gas Discharge)
- Line Drivers
- Logic Buffers
The ULx200xA devices are high-voltage, high-current Darlington transistor arrays. Each consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads.
The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. For 100-V (otherwise interchangeable) versions of the ULx2003A devices, see the SLRS023 data sheet for the SN75468 and SN75469 devices.
The ULN2002A device is designed specifically for use with 14-V to 25-V PMOS devices. Each input of this device has a Zener diode and resistor in series to control the input current to a safe limit. The ULx2003A devices have a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.
The ULx2004A devices have a 10.5-kΩ series base resistor to allow operation directly from CMOS devices that use supply voltages of 6 V to 15 V. The required input current of the ULx2004A device is below that of the ULx2003A devices, and the required voltage is less than that required by the ULN2002A device.
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| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| ULx200xD | SOIC (16) | 9.90 mm × 3.91 mm |
| ULx200xN | PDIP (16) | 19.30 mm × 6.35 mm |
| ULN200xNS | SOP (16) | 10.30 mm × 5.30 mm |
| ULN200xPW | TSSOP (16) | 5.00 mm × 4.40 mm |
