DC-DC Boost www.ams.com/AS1310 AS1310 – Ultra-low IQ hysteretic step-up DC-DC converter - Industry’s lowest IQ 1 µA - Light load efficiency - 85% efficient @ 100 µA load - Up to 92% efficiency - Any variant available within 2 weeks We provide innovative analog solutions to the most challenging applications in sensor and sensor interfaces, power management, and wireless. General Description in order to save power. This mode is active approximately 50μs after a current pulse provided that the output is in regulation. In order to save power the AS1310 features a shutdown mode, where it draws less than 100nA. During shutdown mode the battery is disconnected from the output. The AS1310 also offers adjustable low battery detection. If the battery voltage decreases below the threshold defined by two external resistors on pin LBI, the LBO output is pulled to logic low. The AS1310 is available in a TDFN (2x2) 8-pin package. The AS1310 is an ultra-low IQ hysteretic step-up DC-DC converter optimized for light loads (60mA), where it achieves efficiencies of up to 92%. AS1310 operates from a 0.7V to 3.6V supply and supports output voltages between 1.8V and 3.3V. Besides the available AS1310 standard variants any variant with output voltages in 50mV steps are available. If the input voltage exceeds the output voltage the device is in a feed-through mode and the input is directly connected to the output voltage. In light load operation, the device enters a sleep mode when most of the internal operating blocks are turned off Applications Features - Single and dual cell powered devices - Portable Medical - Remote controls - Hearing aids - Wireless mouse - Light-load applications - Input voltage range: 0.7 to 3.6V Fixed output voltage range: 1.8 to 3.3V Output current: 60mA @ VIN-0.9V, VOUT-1.8V Quiescent current: 1µA (typ.) Shutdown current: < 100nA Up to 92% efficiency Output disconnect in shutdown Feed through mode when VIN > VOUT Adjustable low battery detection No external diode or translator required Over temperature protection TDFN (2x2) 8-pin package AS1310 Block Diagram L1 6.8µH 3 V IN 0.7V to 3.6V C1 22µF LX 8 6 VIN R1 1 LBI R2 On Off LBO AS1310 Low Battery Detect R3 4 VOUT C2 22µF 5 7 REF EN 2 GND V OUT 1.8V to 3.3V C REF 100nF www.ams.com [email protected] © 06/2012 by ams Subject to change without notice Headquarters ams AG Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria Phone +43 3136 500-0 · Fax +43 3136 525-01 Sales Offices Worldwide [email protected] [email protected] [email protected]