AIC1845

FEATURES w wInput Range: 2.7V to 5.0V No Inductors Needed at .D Current: 100mA (V Output w 110mA (V Ultralow Power: IIN = 13µA Regulated 5V ±4% Output Voltage IN =3.3V) IN =3.6V) aS e e h U 4 t m o .c AIC1845 Regulated 5V Charge Pump In SOT-23 DESCRIPTION The AIC1845 is a micropower charge pump DC/DC converter that produces a regulated 5V output. The input voltage range is 2.7V to 5.0V. Extremely low operating current (13µA typical with no load) and a low external-part count (one 0.22µF flying capacitor and two small bypass capacitors at VIN and VOUT ) make the AIC1845 ideally suitable for small, battery-powered applications. Very Low Shutdown Current: <1µA Internal Oscillator: 650KHz Short-Circuit and Overtemperature Protection 6-Pin SOT-23 Package The AIC1845 operates as a PSM (Pulse Skipping Modulation) mode switched capacitor APPLICATIONS White or Blue LED Backlighting SIM Interface Supplies for Cellular Telephones Li-Ion Battery Backup Supplies Local 3V to 5V Conversion Smart Card Readers PCMCIA Local 5V Supplies voltage doubler to produce a regulated output and features with thermal shutdown capability and short circuit protection. The AIC1845 is available in a 6-pin SOT-23 package. TYPICAL APPLICATION CIRCUIT 1-Cell Li-ion Battery w w * ** CFLY CIN 2.2µF w t a .D U1 1 VOUT GND SHDN AIC1845 2 3 S a C+ 6 5 4 C- e h U 4 t e VOUT .c m o ** R1 COUT 2.2µF * * * * VIN 0.22µF CFLY Regulated 5V Output from 2.7V to 5.0V Input WLED series number: ...