RT8237CZQW(2)

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RT8237CZQW(2) Application Field and Working Principle

The RT8237CZQW(2) is a low cost and highly efficient controller IC for regulating voltage in DC-to-DC power converters in Power Management ICs (PMICs) applications. It is a high-speed, switching regulator designed for switching mode power supplies that require tight digital control of the output voltage. It has an input voltage range from 500mV to 4.5V and an output voltage range from 2.5V to 5.0V. It is suitable for use in high-efficiency dc-to-dc converters with low output ripple and standby current requirements. The RT8237CZQW(2) is also suitable for multiple output step-down converters that require tight regulation over the operating temperature range.

The RT8237CZQW(2) has an integrated Voltage Regulator (VR) with an adjustable output voltage setting. The output voltage is set using an external resistor divider. The RT8237CZQW(2) also has an on-board voltage reference to maintain constant output regulation. Additionally, an enable pin can be used to enable and disable the output voltage when current is not needed.

The RT8237CZQW(2) is a highly efficient, step-down DC-to-DC controller with a synchronous rectifier, switched capacitor, and a voltage feedback operation. It has a high peak current rating of up to 1.8A, a low on-resistance of 6.4mΩ, and superior control features including current limit, over-voltage protection, adjustable over-current protection, and thermal shutdown. Additionally, the RT8237CZQW(2) features an integrated pulse-by-pulse current limit to limit the input current and reduce the ripple current on the input side.

In terms of protection features, the RT8237CZQW(2) has an over-voltage protection (OVP) of up to 20V and over-current protection (OCP) of up to 0.45A. It also has a thermal shutdown that will reduce the output voltage if the output is overloaded or shorts. Additionally, it has a soft-start feature that will gradually increase the output voltage over a determined time period.

The RT8237CZQW(2) is designed for a wide range of systems. It can be used in data communications, industrial control, consumer, office automation, and automotive electronics, as well as in any application requiring DC-to-DC conversion of low voltage and high current. The RT8237CZQW(2) is ideal for power supplies, wireless base station transmitters, and PLCs.

The RT8237CZQW(2) is an excellent choice for designers requiring low cost and high efficiency in a step-down, DC-to-DC converter. With its fast response time, robust protection features, and wide operating temperature range, it is an excellent solution for a wide range of PMIC applications.

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