DESCRIPTION
The LTC®3458L is a high efficiency, current mode, fixed frequency, step up DC/DC converter with true output disconnect and inrush current limiting. The LTC3458L is rated for up to 6V output and includes a 0.2Ω N-channel MOSFET switch and a 0.3Ω P-channel MOSFET synchronous rectifier. The LTC3458L is well suited for battery powered applications and includes programmable output voltage, switching frequency and loop compensation. The oscillator frequency can be set up to 1.5MHz or synchronized to an external clock.

FEATURES
■ High Efficiency: Up to 95%
■ Inrush Current Limiting and Output Disconnect
■ Programmable Output Voltages up to 6V
■ 1.5V to 6V Input Range
■ Programmable/Synchronizable Fixed Frequency
   Operation up to 1.5MHz
■ Programmable Automatic Burst Mode® Operation
■ Current Mode Control with Programmable Soft-Start
   Period and Peak Current Limit
■ 0.2Ω N-Channel and 0.3Ω P-Channel Switches
■ Ultralow Quiescent Currents: 12µA Sleep, <1µA in
   Shutdown
■ 12-Pin 4mm × 3mm Thermally Enhanced DFN
   Package

APPLICATIONS
■ Point-of-Load Regulators
■ USB VBUS Power
■ Portable GPS
■ MP3 Players