LD1117D33CTR

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The LD1117D33CTR is a linear voltage regulator designed and manufactured by STMicroelectronics. It is designed to provide the regulated voltage output of 3.3V and is capable of delivering up to 1.5A of current. It has a maximum dropout voltage of 1.0V and a temperature range of -40° to 85°C. It is available as a TO-220 package. The LD1117D33CTR is an ideal solution for applications that require a 3.3V output voltage from a 5V or 12V input voltage.

The LD1117D33CTR is a three-terminal adjustable positive voltage regulator. It is suitable for applications such as motor and power supplies, computer peripherals, laptop systems, and other portable electronic devices that require an accurate 3.3V regulated supply. The LD1117D33CTR features an internal circuit that senses the output voltage, compensates for variations in the input voltage, and adjusts the current in the pass transistor to maintain a stable output voltage. It also features a current-limited protection circuit, which prevents damage caused by excessive current flow. Moreover, it has an internal thermal shutdown circuit, which protects the device from thermal damage.

To ensure a stable operation of the LD1117D33CTR, it is important to carefully select and specify the components used for the power supply. The input voltage should be within the range of 4.5V to 18V and the output load, as well as the external components should be within the specified limits. The external components should also be of the same quality as the integrated circuit. To achieve a low output voltage ripple, a solid-state electrolytic capacitor of at least 10µF should be connected to the output. The bypass capacitor of 0.1µF should also be connected across the input terminals.

In summary, the LD1117D33CTR is a linear voltage regulator offering a regulated 3.3V output and up to 1.5A of current. It has a low dropout voltage, temperature and current-limiting protection features and can operate between 4.5 to 18V input voltage range. It is ideal for applications such as motor and power supplies, computer peripherals, laptop systems, and other portable electronic devices that require a regulated supply.

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