LTC3408 LTC3408EDD WCDMA Power Amplifier Applications Voltage Regulator IC

Details

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FEATURES

Dynamically Adjustable Output from 0.3V to 3.5V

600mA Output Current

Internal 0.08Ω P-Channel MOSFET Bypass Transistor

High Efficiency: Up to 96%

1.5MHz Constant Frequency Operation

No Schottky Diode Required

Low Dropout Operation: 100% Duty Cycle

2.5V to 5V Input Voltage Range

Shutdown Mode Draws < 1µA Supply Current

Current Mode Operation for Excellent Line and Load Transient Response

Overtemperature Protected

Available in 8-Lead 3mm × 3mm DFN Package

The LTC3408 is a high efficiency monolithic synchronous buck regulator optimized for WCDMA power amplifier applications. The output voltage can be dynamically programmed from 0.3V to 3.5V. At VOUT > 3.6V an internal 0.08Ω bypass P-channel MOSFET connects VOUT directly to VIN, eliminating power loss through the inductor.