LT1683IG#TRPBF

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LT1683IG#TRPBF is a integration of a switching regulator controller with a high frequency power MOSFET. It implements current mode based switching power conversion architectures such as buck and boost. It is a high-performance controller intended for a wide range of DC to DC conversion applications. It is a monolithic switching regulator controller that includes cycle-by-cycle over current protection, adjustable frequency and synchronous rectification, and temperature compensated current regulation.

The application field of LT1683IG#TRPBF is varied and depends on a few fundamental parameters, such as input voltage, output power, efficiency, power supply type and switching frequency. Generally speaking, it can be used in mobile devices and computer peripherals, such as mobile handsets, cell phones and computers, as well as various kinds of lighting fixtures and charger/adapter. Its working principle is based on the current mode control. By sensing the inductor current with a current sense resistor, it accurately regulates the output voltage.

When the inductor current is near zero, the internal comparator starts to charge the internal loop compensation capacitor. When it reaches a certain threshold, the control switch will be turned on. The voltage across the inductor is regulated to maintain the output voltage in this state. In the decreasing stage of the inductor current, the control switch is turned off and the inductor current will be recycled to charge the output capacitor. This will prevent the discharge of the output capacitor.

LT1683IG#TRPBF has several features designed to enhance the current mode switching regulator, such as adjustable switching frequency, 3V to 42V operating range, 2.7A internal switch current limit, high efficiency operation, temperature compensated current regulation, synchronous rectifier control, fast response and cycle-by cycle current limit. It also has a thermally enhanced 8 pin TSSOP package, making it suitable for high-density applications.

LT1683IG#TRPBF is suitable for applications such as high-current point of load DC/DC conversion, line-powered to battery applications and LED lighting systems. It operates over a wide input voltage range and provides a better transient response compared to traditional linear regulators because of its fast on/off action.

In summary, LT1683IG#TRPBF belongs to PMIC - Voltage Regulators - DC DC Switching Controllers. Its application field is varied and it is suitable for mobile phones, computers and various kinds of lighting fixtures and chargers/adapters. Its working principle is based on current mode control. It is designed with several features such as adjustable switching frequency, 3V to 42V operating range and high efficiency operation. With its thermally enhanced 8 pin TSSOP package, the LT1683IG#TRPBF is excellent choice for high-current point of load DC/DC conversion applications.

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