CHL8325A-00CRT

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CHL8325A-00CRT Application Field and Working Principle

CHL8325A-00CRT, a special purpose voltage regulator produced by STMicroelectronics, is a power management IC that can manage both voltage regulation and clock regulation. It is specially designed for use in mobile phones, digital cameras and digital video cameras. This article will provide a general overview of its applications and working principle.

Application

The CHL8325A-00CRT is mainly used in digital media and telecommunication applications, such as digital cameras, digital video cameras, and mobile phones. It can provide voltage and clock regulation for these devices, and helps improve their performance. The CHL8325A-00CRT can also be used in other applications, such as industrial control systems, medical electronics, automotive, and aerospace.

Working Principle

The CHL8325A-00CRT is a highly integrated voltage regulator that uses a switched-mode power supply principle. It has a buck topology and can provide output voltage regulation up to 2.8V. The switching frequency range is between 600 kHz and 1.2 MHz. It also features a temperature-compensated current-mode control with spread spectrum effect. It provides a high level of precision and good light load efficiency.

The device has an integrated linear regulator and includes various protection features, such as low voltage dropout, overcurrent, overtemperature and overvoltage. The device is internally protected by a thermal shutdown circuit and a 4V pre-regulator. An external capacitor and resistor are used to set the inductor current limit.

The CHL8325A-00CRT uses a PFM/PWM hysteresis control technique, which is implemented via the CLKOSC. The clock oscillator provides a clock signal that is used to synchronize the device\'s switching operation. The output voltage and the switching frequency of the device can be adjusted with an external resistor or a voltage control pin (VCRT).

Conclusion

The CHL8325A-00CRT is an integrated voltage regulator designed for use in digital media and telecommunication applications. It has a buck topology and provides output voltage regulation up to 2.8V. The device also features protection features, such as low voltage dropout, overcurrent, overtemperature and overvoltage. The CHL8325A-00CRT uses a PFM/PWM hysteresis control technique, and the output voltage and the switching frequency of the device can be adjusted with an external resistor or a voltage control pin (VCRT).

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