UC3526DWG4

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The UC3526DWG4 is a current mode pulse width modulator integrated circuit (IC) designed specifically to control DC/DC converters. It is considered a DC/DC switching controller and falls within the Power Management IC (PMIC) - Voltage Regulators - DC DC Switching Controller category. This IC is designed to efficiently switch an inductor and control a wide range of power supply topologies, including buck, boost, flyback, and forward converters, making it an ideal choice for switching power supplies.

The device consists of a Pulse Width Modulator (PWM), an error amplifier, a ramp generator, a sawtooth oscillator, and some control logic. It features a wide operating voltage range, ranging from 4.5V to 15V, with a maximum power output of 30V. Additionally, the UC3526DWG4 offers a wide operating temperature range from -40°C to 85°C, making it suitable for a variety of applications.

The UC3526DWG4 operates in current mode with a fast cycle lower than 200ns. The current mode control provides a fast transient response and cycle-to-cycle jitter. It incorporates a powerful high-frequency circuit and a peak current sensing circuit. The PWM pulse widths are duty cycled between 5% and 95min in accordance with an analog voltage input to the error amplifier and an externally fed ramp. The voltage-controlled oscillator on this IC allows both the frequency and duty cycle to be regulated simultaneously.

The UC3526DWG4 is designed to control and regulate DC/DC converters, and it can be used in a variety of applications. Some of the potential usage areas include industrial motion control applications, LED driver implementations, telecommunications, and other critical power supply applications. This device is also suited for power supplies used in various consumer and automotive applications and is available in a narrow 8-Pin SSOP package.

The UC3526DWG4 is an ideal choice for DC/DC converters due to its fast switching frequency and high efficiency with low power loss. With its current mode design and integrated control circuitry, it simplifies the control process and reduces the size and complexity of the overall design. This IC provides a versatile, cost-effective solution that is easy to integrate into various types of power supplies.

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