LTC1709EG#TRPBF

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LTC1709EG#TRPBF Application Field and Working Principle

The LTC1709EG#TRPBF voltage regulator is a DC to DC switching controller from the PMIC-Voltage Regulates-DC DC Switching Controllers category. It is designed and developed for compact, cost-effective and high-efficiency DC-DC solutions from on-chip supplies and battery sources. As a PWM controller, it has the capacity to control the output current and voltage of a step-down DC/DC switching converter.

Features

The LTC1709EG#TRPBF features the following:

• It is an optimized, cost-effective and space-saving switching controller.
• Two levels of output current programming.
• Integrated 3A switch and current sensing circuit.
• High efficiency and fast transient response.
• Low-cost Schottky diode and transformer solution.
• Wide input voltage range.
• Automatic switch-over from one supply to another.

Applications

Internally, the LTC1709EG#TRPBF consists of an oscillator, a processor, a feedback system and a power switch. Its primary applications are in cellphones and other handheld devices, as well as laptops, set-top boxes and digital TVs. In these devices, it can be used for step-down conversion from a high input voltage to a lower output voltage.

Working Principle

The LTC1709EG#TRPBF consists of an oscillator, a processor, a feedback system and a power switch. Its operation is based on the pulse-width modulation (PWM) technique. It works in such a way that it converts a high voltage voltage to a lower regulated voltage. When powered on, the oscillator starts generating a clock signal which is then sent to the processor. The processor uses the information in the signal to control the power switch and the feedback system. The power switch will then induce a frequency of on and off pulses in the converter depending on the input voltage, load and the feedback signal. This frequency is then used to adjust the amount of power transferred from the input to the output.

The feedback system measures the output voltage and it sends a signal back to the processor. The processor then continuously adjusts the pulse frequency generated by the power switch in order to maintain the desired output voltage. This enables the LTC1709EG#TRPBF to effectively regulate the output according to the input voltage and load.

In addition, the LTC1709EG#TRPBF features a two level output current programming system. This enables it to rapidly adjust the output voltage and current depending on the connected load and helps in providing a more consistent voltage and current output.

Overall, the LTC1709EG#TRPBF offers a great control of output voltage and current and provideshigh efficiency and fast transient response. This makes it an ideal choice for various handheld and laptop applications.

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