AS1321 - AMSCO

AS1321 Step-Up DC-DC Converter

The AS1321 is a high-efficiency step-up DC-DC converter designed to generate a fixed output voltage of +5.0V. The AS1321 achieves an efficiency of up to 96%. The minimum input voltage is +1.5V, the output voltage is fixed at +5.0V, and output current is up to 130mA (@ 2V VBATT). In order to save power the AS1321 features a shutdown mode, where it draws less .

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 Feature.