LT3697IMSE#TRPBF

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LT3697IMSE#TRPBF is a complete DC/DC boost/inverting switching regulator from Linear Technology. It is specially designed for low output power and high loop bandwidth applications. It operates from input voltage of 2.6V to 35V and provides an output voltage of -5V to 32V with 2A of output current.

LT3697IMSE#TRPBF can be categorised under PMIC - Voltage Regulators - DC DC Switching Regulators. Its application fields include USB Type-C power delivery applications, battery-operated products, power-over-Ethernet applications and POE-switch regulators.

The main feature of the LT3697IMSE#TRPBF is the low output power and high loop bandwidth applications. It has an input current limit of 4A, adjustable output voltages and power levels of up to 2A. The LT3697IMSE#TRPBF also features a high efficiency of up to 95%, over-voltage, input under-voltage lockout, programmability and protection features.

The LT3697IMSE#TRPBF also offers high integration, with all the functions integrated into a single 6-pin SOT-23 or 10-pin MSOP package. It requires minimal external components, eliminating the need for bulky external components. Additionally, the LT3697IMSE#TRPBF has low harmonic distortion and allows for fast transient response.

The working principle of the LT3697IMSE#TRPBF is based on the Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM) switching mode power supply (SMPS). In these switching modes, the input voltage is first converted into an analog signal in the form of pulses through a voltage multiplier circuitry. The amplitude and frequency of these pulses can be adjusted to regulate the output and to keep the converter’s power level within the desired limits.

In the Pulse Width Modulation (PWM) mode, the duty cycle of the pulses is varied to regulate the output voltage. In the Pulse Frequency Modulation (PFM), the frequency of the pulses is varied to regulate the output voltage. The LT3697IMSE#TRPBF is also capable of automatically switching between PWM and PFM according to the load condition to maintain the output voltage within the desired limits.

The LT3697IMSE#TRPBF can be used in many different applications due to its small size, wide operating range, high integration and protection features. Its suitable applications include USB Type-C power delivery applications, battery-operated products, power-over-Ethernet applications and POE-switch regulators.

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