GENERAL DESCRIPTION
The AS1321 achieves an efficiency of up to 96%. In order to save power the AS1321 features a shutdown mode, where it draws less than 1µA. In shutdown mode the battery is connected directly to the output enabling the supply of real-time-clocks. The AS1321 provides a power-on reset output that goes high-impedance when the output reaches 90% of its regulation point. The SHDNN trip threshold of the AS1321 can be used as an input voltage detector that disables the device when the battery voltage falls to a predetermined level. An internal synchronous rectifier is included, which is parallel with the external Schottky diode. The AS1321 is available in a 6-pin SOT23 package. 2 Key FEATURES
! ! ! ! ! ! ! ! Fixed Output Voltage: +5.0V Output Current: Up to 130mA (@ 2V VBATT) Internal Synchronous Rectifier Shutdown Mode Supply Current: Less Than 1µA Efficiency: Up to 96% Minimum Input Voltage: +1.5V Accurate Shutdown Low-Battery Cutoff Threshold Battery Input Connected to Pin OUT in Shutdown Mode for Backup Power 6-pin SOT23 Package !
AMSCO
