CHL8214-08CRT

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CHL8214-08CRT controller is a buck regulator with an integrated power MOSFET for high-efficiency step-down DC/DC converter applications. It is used in products ranging from cameras, mobile phones and servers to exterior lighting systems. This integrated device provides high efficiency and fast transient response, with a relatively small size, while addressing noise issues. Its applications are versatile and it can be used in a variety of systems, including boot voltage and power. It boasts a low quiescent current standby mode, enabling improved system performance and battery life. It can also be used in applications which require high accuracy, low noise or a wide input voltage condition.

CHL8214-08CRT is an advanced control-ic for DC/DC step-down converter in the PWM (pulse width modulation) mode. It can obtain the characteristics of a very fast transient response, low output voltage ripple, and Pulse-by-Pulse current limit protection. It includes an integrated 720 mΩ power MOSFET, sense resistor, and clock oscillator, requiring only a few external components for the complete regulator. The controller IC\'s internal reference voltage circuit provides very precise voltage output regulation. The power MOSFET gate driver provides a well-controlled rise time, reducing the stress on the external gate drive circuit to both external power MOSFETs, resulting in improved system reliability.

The CHL8214-08CRT can operate in a fixed frequency mode or in discontinuous-conduction mode (DCM) that improves efficiency at light load current. The switching frequency is internally adjustable via an external resistor. The dead time is also adjustable via an external resistor. The PWM output signal can be directly used to generate mixed-signal frequency and duty cycle of PWM signal.

The operating temperature range of the CHL8214-08CRT is from -40 °C to 105 °C, allowing for a wide range of applications. It also offers protection features, providing a safe operation for the system by limiting overvoltage, undervoltage, overcurrent and short-circuit protection. The CHL8214-08CRT is available in a compact 3 mm x 3 mm LQFP package, making it suitable for space-saving board designs.

In summary, the CHL8214-08CRT is a power-saving, high efficiency, and feature-rich DC/DC step-down controller that is suitable for a variety of applications. Its integrated circuitry simplifies design and saves board space and system cost, while delivering great performance.

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