Features: *High Efficiency Operation (No Sense Resistor Required)*Wide Input Voltage Range: 2.5V to 36V*Current Mode Control Provides Excellent Transient Response*High Maximum Duty Cycle (Typ 92%)*±1% Internal Voltage Reference*±2% RUN Pin Threshold with 100mV Hysteresis*Micropower Shutdown: IQ = ...
LTC3704: Features: *High Efficiency Operation (No Sense Resistor Required)*Wide Input Voltage Range: 2.5V to 36V*Current Mode Control Provides Excellent Transient Response*High Maximum Duty Cycle (Typ 92%)*±...
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The LTC®3704 is a wide input range, current mode,positive-to-negative DC/DC controller that drives an N-channel power MOSFET and requires very few external components. Intended for low to high power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET's on-resistance, thereby maximizing efficiency.
The IC's operating frequency can be set with an external resistor over a 50kHz to 1MHz range, and can be synchronized to an external clock using the MODE/SYNC pin. Burst Mode operation at light loads, a low minimum operating supply voltage of 2.5V and a low shutdown quiescent current of 10µA make the LTC3704 ideally suited for battery-operated systems.
For applications requiring constant frequency operation,the Burst Mode operation feature can be defeated using the MODE/SYNC pin. Higher than 36V switch voltage applications are possible with the LTC3704 by connecting the SENSE pin to a resistor in the source of the power MOSFET.