A8697ELJTR-T

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A8697ELJTR-T Application Field and Working Principle

A8697ELJTR-T is a DC DC switching regulator that is used for various applications. It is a Dual External-Field-Effect Transistor (DFET) Switching Regulator with a maximum output current of 3A, offering low-side-switch current limiting and high-frequency operation. It suits user applications within the automotive, telecommunications, industrial and consumer electronics markets.

Features of A8697ELJTR-T

• Input voltage range from 2.7V to 6.5V
• Integrated bootstrap diode for high-side switch
• Short circuit protection
• Current limit for both high and low side switches
• High-side-switch soft-start
• External PWM frequency and current limit setting
• Support for SIP packages

Applications of A8697ELJTR-T

A8697ELJTR-T is suitable for various applications including step-down DC/DC conversion, voltage converters, general-purpose regulator and DC/DC power supplies. As a switching regulator, it is used in high-side and low-side switches, and can be used in transformerless applications. Furthermore, it is capable of switching high loads with low EMI, and can be used for active clamping and pulsed applications.

Working Principle of A8697ELJTR-T

The A8697ELJTR-T DC/DC switching regulator works as a voltage converter by switching on and off the external MOSFETs. The voltage from the input source is converted to a desired output voltage level by oscillation at a certain frequency with a duty cycle controlled by an internal or external pulse width modulation (PWM) controller. The regulator then switches on the low-side switch and switches off the high-side switch to change the duty cycle, which produces a voltage at the output that is greater or less than the input voltage. The regulator is designed to perform a wide range of output voltages, thus allowing the user to adjust the output voltage according to their requirements.

As the current passes through a series of switches, the output signal is converted to the desired voltage. The switching frequency of the regulator is controlled by the PWM signal, which can be set externally to meet the user’s requirements. The output current of the regulator is controlled by the current limit feature, which limits the current flowing through the external MOSFETs. Furthermore, the A8697ELJTR-T DC/DC switching regulator includes overload protection to protect the circuit from any external faults.

Conclusion

In conclusion, the A8697ELJTR-T DC/DC switching regulator is designed for various applications such as conversion of a low-voltage input to a high-voltage output. It can be used for various applications including step-down DC/DC conversion, voltage converters, general-purpose regulator, and DC/DC power supplies. It is suitable for use in automotive, telecommunications, industrial, and consumer electronics markets due to its safety features, high-side-switch current limiting, and short circuit protection. Additionally, it includes a soft-start feature and current limit for both high and low-side switches, and supports a range of output voltages via an external PWM signal.

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