DESCRIPTION
The LTC®3458 is a high efficiency, current mode, fixed frequency, step up DC/DC converter with true output disconnect and inrush current limiting. The LTC3458 is rated for a 7.5V output and includes a 0.3Ω N-channel MOSFET switch and a 0.4Ω P-channel MOSFET synchronous rectifier. The LTC3458 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 93%
■ Inrush Current Limiting and Output Disconnect
■ Programmable Output Voltages up to 7.5V
■ 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
■ 700mA at 7V from 5V Input
■ 0.3Ω N-Channel and 0.4Ω P-Channel 1.4A Switches
   at 5VOUT
■ Ultralow Quiescent Currents: 15µA Sleep, <1µA in
   Shutdown
■ 3mm × 4mm Thermally Enhanced DFN Package

APPLICATIONS
■ Point-of-Load Regulators
■ USB VBUS Power
■ LCD Bias
■ OLED Displays