LTC1923EGN#PBF

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The LTC1923EGN#PBF is a bank of four buck switching regulators that combine a high efficiency, low operating current architecture with features that simplify power supply design. This device can be used in a variety of applications such as telecommunications, instrumentation, industrial equipment, and computing. Each regulator is capable of delivering up to 600mA of output current and includes an advanced current-limit circuit, adjustable soft-start and a shutdown feature that enables the regulator to be disabled without disconnecting the supply voltage.

The LTC1923EGN#PBF can be used in applications requiring one to four regulated outputs and the flexibility to set any output voltage between 1.2V and 6V. It comes with a full protection circuit, including over-voltage, under-voltage and thermal protection. The LTC1923EGN#PBF also offers an adjustable PWM frequency of up to 750KHz, allowing it to be used in designs where a low-noise, high-efficiency supply is needed.

The LTC1923EGN#PBF is ideal for applications where multiple, independently adjustable regulated outputs are needed, providing up to 600mA of output current with less than 40µA quiescent (no load) current. This device is offered in an 8-pin SOIC package and a 10-pin TSSOP and is designed for operation over an extended temperature range of -40°C to 125°C and can operate from supplies up to 8.5V.

The working principle of the LTC1923EGN#PBF device is based on a control architecture of linear regulators with the use of external components. This device uses a pulse-width modulation (PWM) control method for output regulation. The use of PWM allows for more efficient current control and dynamic response time. The device is also equipped with an input-undervoltage lockout, a soft start circuit and a threshold voltage detector that trips at 2.2V.

The common of source of the switches is connected to the regulator’s input voltage through a current sense resistor, which monitors the internal current flow. The selectable frequency of the PWM controller varies between 500KHz and 750KHz, allowing for greater versatility in the application. The device also includes analog outputs that allow the user to monitor its output voltage and current in order to optimize system performance.

In summary, the LTC1923EGN#PBF is a powerful and versatile device that is ideal for applications requiring high efficiency, low power operation and multiple, independently regulated outputs. With its wide operating temperature range and adjustable PWM frequency, this device provides the flexibility and performance needed to meet the requirements of a wide variety of applications.

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