产品概览
ULQ2004ATDRQ1 from ST is an automotive AEC-Q100 7-channel Darlington array with clamp diodes. 500mA/channel. hFE greater than 1000 allows direct MCU GPIO drive. TDRQ1 = SOIC-16 tape-and-reel automotive grade.
工作原理
Darlington pair: two cascaded NPN transistors. Small base current amplified by both stages. Clamp diodes protect against inductive kickback. Common emitter sinks load current to ground.
Pin Description
| 针脚 | 名称 | 功能 |
|---|---|---|
| 1-7 | INPUT 1-7 | Logic inputs |
| 8 | 接地 | 地面 |
| 9 | COM | Clamp common |
| 10-16 | OUTPUT 7-1 | Darlington outputs |
应用
- Automotive relay/solenoid drivers
- Stepper motor unipolar
- 12V lamp/LED control
Alternative Models
| 制造商 | 部件编号 | 说明 |
|---|---|---|
| ST | ULN2003ATDRQ1 | 6V input version |
| TI | ULN2003AIPWR | TSSOP version |