The LM2775DSGT is a switched capacitor charge-pump Voltage Converter Doubler that produces a low-noise output voltage. The LM2775 can supply up to 200mA of output current over a 3.1 to 5.5V input range, as well as up to 125mA of output current when the input voltage is as low as 2.7V. At low output currents, the LM2775 can reduce its quiescent current by operating in a pulse frequency modulation (PFM) mode. PFM mode can be enabled or disabled by driving the PFM pin to high or low. Additionally, when the LM2775 is in shutdown, the user can chose to have the output voltage pulled to GND or left in a high impedance state by setting the OUTDIS pin high or low.
Shutdown disconnects load from VIN
Current limit and thermal protection
PFM Operation during light load currents (PFM pin tied high)