Lowpowersemi LP3983H
The LP3983H is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3983H performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. The LP3983H also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices.GENERAL DESCRIPTION
A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The LP3983H consumes less than 0.01µA in shutdown mode and has fast turn-on time less than 50µs. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. It is available in the 5-lead of SOT23-5 packages. Ordering Information LP3983H □ □□ □ □□ FB voltage 09: 0.9V 08: 0.8V F: Pb-Free Package Type B5: SOT23-5 B6: SOT23-6 Output Voltage Type A: AdjustableFEATURES
● Ultra-Low-Noise for RF Application● 2V- 6V Input Voltage Range
● Low Dropout : 300mV @ 400mA
● 600mA Output Current, 750mA Peak Current
● High PSRR: -68dB at 1KHz
● < 0.01uA Standby Current When Shutdown
● Available in SOT23-5/6 Package
● TTL-Logic-Controlled Shutdown Input
● Ultra-Fast Response in Line/Load transient
● Current Limiting and Thermal Shutdown Pro...