The LTC3701 is a 2-phase dual constant frequency current mode step-down DC/DC controller providing excellent load and line regulation. Power loss and noise due to ESR of the input capacitor are minimized by operating the two controller output stages out-of-phase. The LTC3701 provides a 0.8V ±2% voltage reference and consumes only 460µA of quiescent current. To further maximize the life of a battery source, the external P-channel MOSFET is turned on continuously in dropout (100% duty cycle). Switching frequency is internally set at 550kHz, allowing the use of small inductors and capacitors. For noise sensitive applications, the LTC3701 can be externally synchronized using its phase-locked loop. The frequency can also be externally set from 300kHz to 750kHz by applying a voltage to the PLLLPF pin. Burst Mode operation is inhibited during synchronization or when the EXTCLK/MODE pin is pulled low to reduce noise and RF interference. The LTC3701 contains independent internal soft-start circuitry for each controller. Other features include a power good output voltage monitor and output overvoltage and short-circuit protection. The LTC3701 is available in a small footprint 16-lead narrow SSOP package. Applications * One or Two Lithium-Ion Powered Applications * Notebook and Handheld Computers * Personal Digital Assistants * Portable Instruments * Distributed DC Power Systems * Out-of-Phase Controllers Reduce Required Input Capacitance * True PLL for Frequency Locking or Frequency Adjustment * Operating Frequency Range: 300kHz to 750kHz * Wide VIN Range: 2.5V to 10V * Constant Frequency Current Mode Architecture * Low Dropout: 100% Duty Cycle * Power Good Output Voltage Monitor * Internal Soft-Start Circuitry * Selectable Burst Mode®/Pulse Skipping Operation at Light Loads * Output Overvoltage Protection * Low Quiescent Current: 460µA * 0.8V ±2% Voltage Reference * Small 16-Lead Narrow SSOP Package https://elecena.pl/product/258755/2-phase-low-input-voltage-dual-step-down-dc-dc-controller 2007-03-04 https://elecena.pl/product/258755/2-phase-low-input-voltage-dual-step-down-dc-dc-controller 2014-04-02 https://elecena.pl/product/258755/2-phase-low-input-voltage-dual-step-down-dc-dc-controller 2025-01-19