LTC3221/ LTC3221-3.3/LTC3221-5 Micropower, Regulated Charge Pump in 2 2 DFN FEATURES DESCRIPTIO Ultralow Power: 8A Quiescent Current The LTC 3221 family are micropower charge pump DC/DC Regulated Output Voltages: 3.3V 4%, 5V 4%, ADJ converters that produce a regulated output at up to 60mA. V Range: The input voltage range is 1.8V to 5.5V. Extremely low IN 1.8V to 4.4V (LTC3221-3.3) operating current (8A typical at no load) and low external 2.7V to 5.5V (LTC3221-5) parts count (one ying capacitor and two small bypass Output Current: Up to 60mA capacitors at V and V ) make them ideally suited for IN OUT No Inductors Needed small, battery-powered applications. Very Low Shutdown Current: <1A The LTC3221 family includes xed 5V and 3.3V output Shutdown Disconnects Load from V IN versions plus an adjustable version. All parts operate Burst Mode Control as Burst Mode switched capacitor voltage doublers Short-Circuit Protected to achieve ultralow quiescent current. The chips use a Solution Pro le < 1mm controlled current to supply the output and will survive Tiny 2mm 2mm 6-Pin DFN Package a continuous short-circuit from V to GND. The FB pin OUT of the adjustable LTC3221 can be used to program the U desired output voltage. APPLICATIO S The LTC3221 family is available in a low pro le (0.75mm) Low Power 2 AA Cell to 3.3V Supply 2mm 2mm 6-pin DFN package. Memory Backup Supplies , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst Tire Pressure Sensors Mode is a registered trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. General Purpose Low Power Li-Ion to 5V Supply RF Transmitters Glucose Meters TYPICAL APPLICATIO No-Load Input Current vs Supply Voltage 1F 16 2 1 14 + C C 6 5 V V V V IN OUT IN OUT 12 2.2F 4.7F LTC3221-X T = 90C A 4,7 10 GND T = 25C A 8 3 OFF ON SHDN 3221 TA01 T = 45C 6 A REGULATED 3.3V OUTPUT FROM 1.8V TO 4.4V INPUT 4 V = 3.3V 4% OUT I = OmA TO 25mA V >1.8V OUT IN 2 I = OmA TO 60mA V >2V OUT IN REGULATED 5V OUTPUT FROM 2.7V TO 5.5V INPUT 0 V = 5V 4% OUT 1.5 2.0 2.5 3.0 3.5 4.0 4.5 I = OmA TO 25mA V >2.7V OUT IN SUPPLY VOLTAGE (V) I = OmA TO 60mA V >3V OUT IN 3221 TA01b 3221f 1 NO-LOAD INPUT CURRENT (A) U ULTC3221/ LTC3221-3.3/LTC3221-5 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) TOP VIEW V , SHDN, FB ............................................. 0.3V to 6V IN V to GND ............................................. 0.3V to 5.5V + OUT C 1 6 V OUT V Short-Circuit Duration ............................ Inde nite OUT C 2 7 5 V IN Operating Temperature Range (Note 2) .. 40C to 85C 3 SHDN/FB* 4 GND Storage Temperature Range .................. 65C to 125C Maximum Junction Temperature .......................... 125C T = 125C, = 80C/W JMAX JA EXPOSED PAD IS GND (PIN 7) MUST BE SOLDERED TO PCB *SHDN ON LTC3221-3.3 LTC3221-5 FB ON LTC3221 ORDER PART NUMBER DC PART MARKING LTC3221EDC LCCP LTC3221EDC-3.3 LBQP LTC3221EDC-5 LCCN Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: