CHL8328-33CRT

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Power management integrated circuits (PMICs) are integrated circuits that are critical for any system design since they provide the necessary power supply and monitoring to support complex system requirements. Among PMICs, voltage regulators are extremely important, since they enable system designers to efficiently regulate and deliver power to their designs. Among the numerous types of voltage regulators, special purpose regulators offer unique features and characteristics that can enable more system flexibility, faster time-to-market, and more efficient designs. One such special purpose voltage regulator is the CHL8328-33CRT PMIC.

Overview of CHL8328-33CRT

The CHL8328-33CRT is an integrated circuit voltage regulator that provides up to a 33V output from a wide range of input voltages between 4.5V and 24V. It is fabricated using a high voltage bipolar technology, which enables it to handle voltages up to 48V without negative feedback. The CHL8328-33CRT offers fast transient response, low ripple, and thermal protection against overload or short-circuit conditions.

CHL8328-33CRT Application Fields

The CHL8328-33CRT is an ideal choice for a variety of applications, such as automotive, military, medical, industrial, and consumer electronic designs. The chip\'s high voltage rating and its ability to handle voltage spikes make it well-suited for automotive applications, such as in electric power steering, airbag deployment systems, and headlight dimming/charging circuits.

The chip is also suitable for controlling and monitoring motors, transformers, and converters in industrial and consumer electronic applications. They are also widely used in medical applications such as patient monitoring systems and smart infusion pumps. Finally, the chip\'s ability to withstand high temperature variations, combined with its low operating current and fast transient response, make it well-suited for military applications.

CHL8328-33CRT Working Principle

The CHL8328-33CRT is a switching regulator with an internal voltage reference, a control circuit, and a switch to regulate the output voltage. The voltage reference is set to the desired output voltage. The control circuit compares the output voltage with the reference voltage and adjusts the duty cycle of the switch (on time vs. off time) to control the output voltage.

The CHL8328-33CRT also features a wide range of protections, such as under-voltage lockout (UVLO), over-voltage protection (OVP), and thermal protection. The UVLO ensures that the output voltage is within a safe range and detects when the input voltage falls below its preset threshold. The OVP prevents the output from exceeding its rated voltage and protects the device from damage due to excess voltage. Finally, the thermal protection prevents damage due to heat dissipated by the device.

Advantages of CHL8328-33CRT

The CHL8328-33CRT offers advantages over traditional linear regulators at higher current levels, such as increased power losses in the output stage and increased sensitivity to temperature fluctuations. The chip also has a lower operating current than most linear regulators, which improves system efficiency and reduces thermal stress on components. Additionally, the chip\'s fast transient response enables system designers to respond quickly to input and output voltage fluctuations, resulting in higher system reliability.

The CHL8328-33CRT is an example of an advanced special purpose regulator that offers unique features and characteristics to help system designers create more efficient, reliable, and flexible designs. With its high voltage rating and wide range of protection features and settings, the chip is suitable for a variety of applications, such as automotive, medical, and military designs. Additionally, the chip\'s high efficiency, low operating current, and fast transient response make it an attractive choice for system designers looking for an economical and reliable voltage regulator.

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