LTC1698ES

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The introduction to the LTC1698ES is a multifunction device in the power supply design, implemented in a compact 16-lead SSOP package. This PMIC (Power Supply Controllers, Monitors) provides various functions that are required for a power supply such as voltage monitoring and voltage regulation. There is also the ability to interface with various external circuits such as the voltage supervisor, watchdog timer and power supply. With the included on-board oscillator, the LTC1698ES offers the most common features of a power supply controller, with the ability to provide effective interfacing with other associated components.

The LTC1698ES offers a wide array of features and applications. The main application fields can be mainly divided into three categories: DC-to-DC converter, Battery charger, and Step-Down converter. Another major field is the monitoring of temperature and voltage for controlling the power supply in Safe system conditions.

DC to DC converters use the LTC1698ES for its high accuracy, low power and ability to provide a regulated output voltage. Its low current operation offers the cost benefit of extended battery life. With the ability to provide asymmetrical output power, the LTC1698ES can be employed as a buck converter designed with two linear and two switched outputs. It also features an adjustable soft start and an adjustable current limit.

For charging applications, the LTC1698ES offers an internal temperature-compensated charge control with a short-circuit protection, plus the possibility of connecting up to four cells at a time. This combination will allow up to 8A charge current and up to 8V maximum output, thus making it a viable solution for mobile charging applications.

The LTC1698ES can also be implemented as a resolution programmed step-down converter. It is also available with an adjustable frequency and voltage control, allowing for precision and efficiency tuning. This makes it ideal for system applications demanding improvement in reliability or resolution.

The temperature monitoring capability of the LTC1698ES further improves the power supply reliability and system safety. Users can set the device so that when the temperature of the power supply rises to a certain threshold, the device will automatically drop the output voltage or shut the power supply down to protect it from extreme temperatures.

Lastly, the watchdog timer function of the LTC1698ES is important to ensure the system remains in a stable state and no glitches can cause system failure. This is especially critical for embedded applications; the LTC1698ES comes with an independent frequency control, adjustable time period (1ms to 4096ms), and independent output enable/disable control.

The LTC1698ES is a versatile one-chip PMIC (Power Supply Controllers, Monitors) that provides a variety of features that are essential for power supply controllers. With the included on-board oscillator, the device can provide the needed interface and control for the power supplies of various embedded and system applications. Its temperature monitoring feature and watchdog timer further add to the reliability of the system for a safer environment.

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