微源 LP3981S 低噪声低压差线性稳压IC
General Description
The LP3981S series low-dropout, low-power regulators offer a fast start-up and excellent line and load transient responses. A low ground current while at no load with chips enabled makes the devices attractive for battery-operate power systems. The LP3981S series also provides an active pull-down circuit to quickly discharge output load. Other features include short current limit, thermal protection and a low current consume shut-down mode. The LP3981S is available in SOT23-5 package.
Features
◆ Low Dropout: 260mV @ 300mA
◆ 300mA Output Current, 500mA Peak Current
◆ High PSRR: -63dB at 1KHz
◆ <0.1uA Standby Current In Shutdown Mode
◆ TTL-Logic-Controlled Shutdown Input
◆ Ultra-Fast Response in Line/Load transient
◆ Current Limit and Thermal Shutdown Protection
