LTC1929CG-PG#PBF

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The LTC1929CG-PG#PBF is a low-cost Buck Controller with extremely low Iq (78 µA without frequency synchronization) and high efficiency. It is part of the PMIC (Power Management ICs) Voltage Regulators DC DC Switching Controllers series.

This Buck Controller is specifically designed to convert from a 5V or 3.3V input voltage into a lower voltage output with a high efficiency and low ripple operation. It is capable of operating with very low input currents (<1mA) and is capable of handling large input voltage ranges. It uses a low-noise, constant-frequency control architecture with true differential inputs.

The LTC1929CG-PG#PBF features a range of features and functions such as adjustable output voltage range, soft-start, adjustable frequency, output voltage tracking, and external voltage loop compensation. It has a low-power start-up mode, internal soft-start, and low-power standby mode which allow for low power consumption and improved efficiency.

This Buck Controller is used in applications such as point-of-load (POL) regulators, motor control, and smart battery chargers. It is typically used for powering MCUs, DSPs, ASICs, memories, and other MCU-supported devices. It has an adjustable frequency from 200kHz to 2.5MHz and is capable of delivering a minimum of 1A of output current.

The working principle of the LTC1929CG-PG#PBF is that it uses a simple MOSFET-controlled voltage regulator to control the voltage output. The input voltage is divided by the switching MOSFET, giving a ‘Lifting’ action on the voltage output. The output voltage is then regulated by pulse-width modulating the MOSFET switch at a constant frequency.

The LTC1929CG-PG#PBF also has an internal voltage loop compensation circuit, which provides stability and is capable of maintaining a more precise output voltage. The operating temperature range is between -40˚C to 125˚C, and the device has excellent EMI (Electromagnetic Interference) suppression.

The LTC1929CG-PG#PBF Buck Controller is ideal for applications where low input current, efficient operation and low noise operation are desired. It is also an ideal solution for powering digital ICs and other low power devices. Its small size and efficient operation make it an ideal choice for many applications.

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