LTC3200-5

· Low Noise Constant Frequency Operation
· Output Current: 100mA
· Available in 8-Pin MSOP (LTC3200) and Low Profile (1mm) 6-Pin ThinSOT^TM (LTC3200-5) Packages
· 2MHz Switching Frequency
· Fixed 5V ± 4% Output (LTC3200-5) or ADJ
· V_IN Range: 2.7V to 4.5V
· Automatic Soft-Start Reduces Inrush Current
· No Inductors
· I_CC <1mA in Shutdown

· White LED Backlighting
· Li-Ion Battery Backup Supplies
· Local 3V to 5V Conversion
· Smart Card Readers
· PCMCIA Local 5V Supplies

V_IN to GND ......................................................0.3V to 6V
V_OUT to GND ................................................0.3V to 5.5V
V_FB, SHDN to GND ............................ 0.3V to (V_IN + 0.3V)
I_OUT (Note 2) .......................................................... 150mA
V_OUT Short-Circuit Duration ................................ Indefinite
Operating Temperature Range (Note 3) .. 40°C to 85°C
Storage Temperature Range ................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................... 300°C

The LTC^®3200/LTC3200-5 are low noise, constant frequency switched capacitor voltage doublers. They produce a regulated output voltage from a 2.7V to 4.5V input with up to 100mA of output current. Low external parts count (one flying capacitor and two small bypass capacitors at V_IN and V_OUT) make the LTC3200/LTC3200-5
ideally suited for small, battery-powered applications.

A new charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The LTC3200/LTC3200-5 have thermal shutdown capability and can survive a continuous shortcircuit from V_OUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small ceramic capacitors. A low current shutdown feature disconnects the load from V_IN and reduces quiescent current to <1A.

The LTC3200 is available in an 8-pin MSOP package and the LTC3200-5 is available in a 6-pin ThinSOT.