产品概览
The NCP5501DT33RKG from onsemi is a 3.3V fixed 1A LDO regulator with ultra-low 40 µA quiescent current. The wide 18V input range and DPAK-4 package suit automotive and industrial always-on power rails where efficiency at light load is critical.
主要规格
| 功能 | 3.3V, 1A very low Iq LDO |
| Output Voltage | 3.3V fixed |
| 输出电流 | 1A |
| Dropout Voltage | 600 mV at 1A |
| 静态电流 | 40 µA |
| 电源电压 | Up to 18V |
| 包装 | DPAK-4 (6.1×5.1mm) |
工作原理
PMOS pass element achieves low dropout. Error amplifier and trimmed bandgap reference maintain 3.3V output with ±2% accuracy. 40 µA quiescent current is independent of load, ideal for always-on battery systems. Current limit and thermal shutdown provide fault protection. EN pin enables/disables the output.
应用
- Automotive always-on 3.3V rail
- Industrial standby power
- Battery-backed system
- ECU keep-alive supply