UCC281-3~-5~-ADJ,UCC381-3~-5~-ADJ,PDF数据表下载

UCC281-3~-5~-ADJ,UCC381-3~-5~-ADJ pdf资料下载The UCC381-3/-5/-ADJ family of positive linear series pass regulators is tailored for low drop out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input to output differential applications, the UCC381 will pass 1A while requiring only 0.5V of input voltage headroom. Dropout voltage decreases linearly with output current, so that dropout at 200mA is less than 100mV. Quiescent current is always less than 650μA. To prevent reverse current conduction, on-chip circuitry limits the minimum forward voltage to typically 50mV. Once the forward voltage limit is reached, the input-output differential voltage is maintained as the input voltage drops until undervoltage lockout disables the regulator. UCC381-3 and UCC381-5 versions have on-chip resistor networks preset to regulate either 3.3V or 5.0V, respectively. Furthermore, remote sensing of the load voltage is possible by connecting the VOUTS pin directly at the load. The output voltage is then regulated to 1.5% at room temperature and better than 2.5% over temperature. The UCC381-ADJ version has a regulated output voltage programmed by an external user-definable resistor ratio. UCC281DP-5 UCC281DP-5G4 UCC281DP-ADJ UCC281DP-ADJG4 UCC281DPTR-5 UCC281DPTR-5G4 UCC281DPTR-ADJ UCC281DPTR-ADJG4 UCC381DP-3 UCC381DP-3G4 UCC381DP-5 UCC381DP-5G4 UCC381DP-ADJ UCC381DP-ADJG4 UCC381DPTR-3 UCC381DPTR-3G4 UCC381DPTR-5 UCC381DPTR-5G4 UCC381DPTR-ADJ UCC381DPTR-ADJG4 Datasheet pdf资料数据表下载