AS1320

www.DataSheet4U.com a u s t ri a m i c r o s y s t e m s AS1320 2 0 0 m A St e p - U p D C - D C C o n v e r t e r D a ta S he e t 1 General Description The AS1320 is a high-efficiency step-up DC-DC converter designed to generate a fixed voltage of +3.3V. The AS1320 achieves an efficiency of up to 90%. The minimum input voltage is 1.5V, the output voltage is fixed at 3.3V, and output current is up to 200mA (@ 2V). In order to save power the AS1320 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 AS1320 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 AS1320 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, thus an external transistor or Schottky diode is not required. The AS1320 is available in a 6-pin SOT23 package. 2 Key Features ! ! ! ! ! ! ! ! ! Fixed Output Voltage: 3.3V Output Current: Up to 200mA (@ 2V) Internal Synchronous Rectifier Requires No External Schottky Diode or FETs Shutdown Mode Supply Current: Less Than 1µA Efficiency: Up to 90% 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 ! 3 Applications The AS1320 is idea...