CS5203A-1GDPR3

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The CS5203A-1GDPR3 is a low-dropout (LDO) linear regulator designed to provide three identical output voltages with an accuracy of 1% from a 2.9 V to 5.5 V input and two packages, fixed (1.0 V, 1.2 V, 1.5 V) and adjustable output voltages. This regulator can supply up to 180mA current for the 1.2V output and up to 100mA for the other two outputs. The CS5203A-1GDPR3 also features adjustable over-current protection, short-circuit protection, enableshutdown, and thermal protection.

Using a two-pin on/off enable control feature of the CS5203A-1GDPR3 allows customers to reduce power consumption. Once enabled, the output voltage is maintained in a precise voltage level. By controlling the enable pin, the user can easily reduce the power consumption when the device is not in use, providing enhanced power saving and thermal management benefits.

The CS5203A-1GDPR3 is designed with a low noise and line regulation, offering a low power-noise density that meets the requirements of high-end digital applications such as data switches/routers, set-top boxes, DSL, and VoIP end-user applications. This part delivers clean, precise power throughout a low-input to output differential and is suitable for powering micro-controller cores or other high-performance logic Integrated Circuits.

The CS5203A-1GDPR3 features a 2.9V to 5.5V Op-amp input range which generates three identical regulated output voltages with an accuracy of +/-1%. The output voltage range of this part starts from 0.8V and is adjustable from 0.925 to 1.7V, 1.0 to 2.1V, or 1.2 to 2.4V.

The working principle of the CS5203A-1GDPR3 is straightforward. The device uses a high-performance Op-amp to provide precise regulation, low noise, and fast transient response. The regulator incorporates an output transistor to generate the desired output voltage. The regulator is connected to the input voltage via a series resistor. This resistor is adjusted to provide a voltage drop across it which is close to the desired output voltage. This design is capable of providing extremely low quiescent current, making it suitable for powering low-power applications.

The CS5203A-1GDPR3 is used in a wide range of applications, such as providing regulated power supplies to DSL modems and VoIP end-user applications, set-top boxes and other multimedia applications, and data switches/routers. It is a drop-in replacement for existing linear regulators and provides an improved solution for controlling power consumption of digital circuits when not in use. The improved efficiency and low noise make it an ideal choice for high-end applications.

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