LT3970EDDB-3.42#TRPBF

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The LT3970EDDB-3. 42#TRPBF is a synchronous step down voltage regulator that belongs in the family of switched-mode power supplies known as DC DC Switching Regulators. A DC-DC switching regulator is a power source that converts a DC input voltage to a lower DC output voltage while maintaining a constant output voltage level. It is suitable for a wide range of applications in distributed power systems.

The LT3970EDDB-3.42#TRPBF is a load-sharing, current-mode-controlled, synchronous, 2-phase bipolar device operating at up to 2MHz. It provides a regulated output voltage from a nominal DC input voltage of 3.3V to 5.5V. The device is housed in a TSSOP-16 package which is suitable for mounting on a standard printed-circuit board (PCB).

The device is ideal for applications that require a high-efficiency, low-output ripple, current-mode-controlled, synchronous step down voltage regulator. It is capable of delivering up to 5A of continuous output current and controlling a wide range of output voltages with up to a 95% efficiency rating. It also has an adjustable output over-voltage protection, and a user-controlled over-current limit. The device is suitable for a variety of applications, including distributed power systems, portable EMIs, and communications equipment.

The LT3970EDDB-3.42#TRPBF regulator is designed to provide a regulated output voltage at the most favorable operating efficiency for the specific application. This is enabled by the internal topology which allows for the device to select the best operating frequency based on the input voltage, output voltage, and load conditions. The device can also be synchronized to an external clock up to 8MHz.

The device can be used in a number of different operating mode scenarios, including Burst Mode® operation, forced Continuous Current Mode (CCM) operation, and Pulse Frequency Modulation (PFM) operation. In Burst Mode® operation, the device is able to continuously vary the output voltage until it reaches a user defined threshold. This mode is suitable for applications that require a low output ripple voltage with no audible noise, or for applications that require very low quiescent current.

In forced Continuous Current Mode (CCM) operation, the device is able to regulate the output voltage with a constant pulsed current fed to the output. This mode is suitable for applications that require low to no output ripple, such as portable and USB power applications. In Pulse Frequency Modulation (PFM) operation, the output voltage is regulated by modulating the frequency of the output pulses for added efficiency at light loads. This mode is suitable for applications that require an efficient operation with no output ripple, such as battery powered devices.

The LT3970EDDB-3.42#TRPBF has a built-in loop compensation circuit to ensure stability and reduce the stress on the internal circuitry. The device also has an enable pin (EN) which allows for a soft start-up sequence and adjustable enable logic thresholds. It also has a power enable input (PE) which can be used to turn the device off when its input voltage exceeds a user-defined level.

The LT3970EDDB-3.42#TRPBF also has protection features such as input over-voltage protection, output over/under-voltage protection, and over-current protection, making it suitable for a wide range of applications. The device also has an adjustable constant current limit to regulate the peak current at which the switch MOSFET is turned off (current limit).

The LT3970EDDB-3.42#TRPBF synchronous step-down voltage regulator is a versatile device well-suited to a wide range of applications in distributed power systems. With its high efficiency, low output ripple, current-mode-control, and adjustable operating frequencies and parameters, it is able to provide superior performance in a number of applications. Additionally, it provides a range of safety and protection features, providing the user with reliable and worry-free operation.

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