Features: ·High Efficiency: Up to 96%·Very Low Quiescent Current: Only 20mA During Operation·300mA Output Current at VIN = 3V·2.5V to 5.5V Input Voltage Range·1.5MHz Constant Frequency Operation·No Schottky Diode Required·Low Dropout Operation: 100% Duty Cycle·0.8V Reference Allows Low Output Volt...
LTC3405: Features: ·High Efficiency: Up to 96%·Very Low Quiescent Current: Only 20mA During Operation·300mA Output Current at VIN = 3V·2.5V to 5.5V Input Voltage Range·1.5MHz Constant Frequency Operation·No ...
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The LTC®3405 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20mA and drops to <1mA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3405 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.
Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.8V feedback reference voltage. The LTC3405 is available in a low profile (1mm) ThinSOT package.