LTC3409AEDD#PBF

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The LTC3409AEDD#PBF is a power management IC that can be classified as a DC-DC switching regulator in the PMIC (Power Management IC) voltage regulator family. It is a synchronous step-up switching converter that can generate an output voltage higher than the input voltage while maintaining a regulated output current. The LTC3409AEDD#PBF can be used in a wide range of applications, such as in battery chargers, smart phones, tablets, laptops, and embedded microcontrollers.The LTC3409AEDD#PBF is designed to accept a wide range of input voltages, ranges from 2.7V to 6.5V. It contains an internal high efficiency, pulse-width modulation (PWM) regulator and two high-side and low-side N-channel power MOSFET switches that can provide up to 3A of current to the output. The LTC3409AEDD#PBF can provide a regulated output voltage of 2.5V to 6V, making it the ideal choice for a wide variety of applications.The LTC3409AEDD#PBF includes several features that make it easy to use and configure. It has a current mode control circuit, voltage mode control circuit, power-good output pin, up to 3A output current, up to 92% efficiency, and precise output voltage regulation. The LTC3409AEDD#PBF also includes an internal compensation network, which eliminates the need for external compensation components. The LTC3409AEDD#PBF has two operating modes. The step-up mode is enabled when the SS/SHDN pin is held high. When the voltage at the EN/UVLO (enable/undervoltage lockout) pin is above the UVLO (undervoltage lockout) threshold, the part will start switching. The output voltage of the part can be set using an external resistor divider and the FB (feedback) pin. The current mode control loop will regulate the output voltage and can provide a very high loop response in the presence of output capacitance. The second mode is the skip-cycle mode. This mode allows the part to periodically skip cycles, thereby reducing the average input current. The frequency of the skip cycle mode is programmed using an external resistor and capacitor connected between the SS/SHDN pin and ground. The LTC3409AEDD#PBF has been designed to operate in harsh environments including high temperature, high humidity and extreme temperatures. It also provides the ability to survive very low input voltage conditions by latching off the power MOSFETs. A power reset output (RESET/SYNC IN) is also provided for signaling purposes.Overall, the LTC3409AEDD#PBF is an ideal choice for a wide range of applications requiring a maximum output current of up to 3A, as well as high efficiency, wide input voltage range, and precise output voltage regulation. It is reliable, easy to implement, and capable of operating over a wide temperature range. The internal features and built-in protection features provide a robust platform for many applications.

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