TL3845DRE4-8

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The TL3845DRE4-8 is a DC-DC switch mode controller. Developed by Texas Instruments, it is designed to optimize the efficiency, output voltage accuracy and dynamic performance of a buck converter. It gives designers greater control of the power supply to ultimately extend battery life.

This versatile controller is designed to support numerous system configurations and a wide range of power specifications. It is capable of providing 2A peak output current, and a wide 8V to 36V input voltage range. Output voltage can be programmed over a range of 0.8V to 1.6V, with a reference accuracy of 0.3%.

Control of output voltage is achieved through a PMBus interface and internal MOSFET gate drivers. The TL3845DRE4-8 can be reconfigured to operate in either Buck or Boost mode and produces a noise-free output with a switching frequency of up to 500kHz.

The controller includes protection features such as current limit, thermal shutdown, under-voltage lockout, and over-voltage protection, enabling reliable operation in demanding environments. The TL3845DRE4-8 is ideal for powering low-power point-of-load supplies, battery charger applications, and synchronous buck converters.

In terms of features, the TL3845DRE4-8 provides a high level of integration and control. Its on-chip phase-locked loop (PLL) synchronizes the phase and frequency of a variety of external oscillators for improved stability and frequency compensation. The controller also includes digital and analog compensation, allowing designers to quickly fine-tune the output voltage using an external digital-to-analog converter.

The TL3845DRE4-8 works on the same principle as other switch-mode controllers. It employs the power of transformation and pulse-width modulation (PWM) to adjust the output voltage according to the line voltage and load current. This method of regulation consumes less energy and generates less heat than traditional linear voltage regulators.

The TL3845DRE4-8 can be used in a variety of applications, including motor drivers, battery chargers, LED lighting and industrial automation. Its wide range of features, coupled with high performance and flexibility, make it an ideal choice for designers who are looking for better control of their power systems.

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