CHL8266-01CRT

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The CHL8266-01CRT is a monolithic integrated circuit voltage regulator from Texas Instruments specifically designed for use in synchronous DC-DC converters. It provides fully regulated output voltages with minimal external components, and has integrated under-voltage, over-voltage and over-temperature protection. Designed to meet the requirements of automotive, industrial and power-over-Ethernet (PoE) applications, the CHL8266-01CRT has a full featured, fully programmable Buck power stage and protection feature set. This Voltage Regulator is ideal for applications operating from a wide input range and providing a regulated output from 0.8V to 2V.

The CHL8266-01CRT DC-DC buck controller is a high-performing, high-efficiency, synchronous step-down regulator. It can convert a wide range of input voltage to a regulated output voltage with little or no external components. This voltage regulator can operate without an external driver MOSFET on the power stage, thanks to its integrated low RDSon NMOSFET. It features a power stage current sensing and dynamic voltage scaling, while also providing an adjustable soft-start and programmable over-temperature protection.

The Synchronous Buck Regulator is suitable for applications where high accuracy and efficiency are required. It is ideal for applications that need to deliver a constant output voltage over a wide input range, such as automotive, industrial and PoE applications. The buck controller has built-in over-current protection and operates with a wide input voltage range (4.5V to 60V). The voltage regulator is also capable of delivering up to 3A of output current in a voltage range of 0.8V to 2V including an adjustable soft-start.

The DC-DC buck controller utilizes an advanced voltage modulator, which is a digitally controlled, closed loop system that measures the output current and adjusts the output voltage to maintain a constant output. This system also allows for dynamic voltage scaling, enabling the output voltage to be adjusted without the need to adjust the switching frequency. Additionally, the voltage regulator incorporates a synchronous compensation method that provides accurate control of the duty cycle without the use of an external ramp generator or oscillator.

The output of the controller can be monitored using a built-in power stage current sensing and monitoring circuit. The voltage regulator also provides a programmable Under-voltage Lockout (UVLO) and Over-voltage Protection (OVP), as well as an adjustable soft start feature that prevents inrush currents when the supply voltage is first applied. The voltage regulator is available in an 8-pin DIP package and is RoHS compliant.

Overall, the CHL8266-01CRT is an integrated monolithic synchronous DC-DC buck controller from Texas Instruments specifically designed for automotive, industrial, and PoE applications. With its integrated under-voltage, over-voltage, and over-temperature protection, it provides a full featured, fully programmable power stage and protection feature set. The advanced voltage modulator and synchronous compensation method, along with its wide input voltage range, provide accurate control and efficient power conversion.

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