LT3048EDC-3.3

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The LT3048EDC-3.3 is a voltage regulator that is part of a family of linear and switching PMIC products. It is designed to provide a stable 3.3V output voltage over a wide range of input supplies. It is ideal for use in a variety of applications, including communications, general industrial, medical, automotive, and mobile battery-powered applications. The LT3048EDC-3.3 is designed to be drop-in compatible with many existing 3.3V linear regulator ICs and switches.

The LT3048EDC-3.3 is capable of delivering up to 150mA of continuous load current. The input voltage range is 4.1V to 18V, and an internal compensation network ensures stable performance over variations in load and temperature. The LT3048EDC-3.3 has a low output voltage noise of 30µV PP (peak to peak) and a high PSRR (power supply rejection ratio) of 65 dB at 10 kHz.

The switching operation of the LT3048EDC-3.3 is synchronized to a 10kHz internal clock. The switching frequency is at a fixed oscillator frequency, which is largely unaffected by temperature changes. The output regulation is thereby immune to changes in the load. The internal power switch can quickly supply the output voltage as the device is not limited by the usual Start-Up threshold voltage.

The LT3048EDC-3.3 is available in a small SOT23-6 package and is designed to achieve a high power efficiency. The device incorporates a shutdown pin which can be used to quickly reduce the supply current to a tiny fraction of the active mode current. The shutdown pin can also be used to quickly cycle power to the load.

The regulated output voltage of the LT3048EDC-3.3 is maintained regardless of input voltage or load variations by operating in burst modes. The device regulates the output voltage by switching the supply voltage at a fixed frequency. The switching frequency is maintained constant by an internal oscillator, and the duty cycle of the switching is automatically adjusted to maintain the output voltage.

The switching design of the LT3048EDC-3.3 also allows for a very low quiescent current of only 1µA and a high transient response. The device is capable of handling large switch transients of over 10A and is designed to be highly efficient. The device also has over-voltage and over-temperature protection, current and thermal limiting, and soft-start capability.

In summary, the LT3048EDC-3.3 is an ideal choice for a wide range of 3.3V linear and switching PMIC applications. It offers a stable output voltage over a wide range of input supplies, low output voltage noise, high PSRR, low quiescent current, and fast transient response. The device is available in a compact SOT23-6 package, and the switching operation of the device is synchronized to an internal 10kHz clock.

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