LD1117V-DG

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LD1117V-DG is an Integrated Voltage Regulator from the Linear category of Power Management and Integrated Circuits (PMIC). It is an efficient, cost-effective solution for plate-powered ITE and other small-scale applications. LD1117V-DG integrates the power regulation, EMI filtering and transient protection on a single silicon die, reducing system component count and expediting time-to-market.

The LD1117V-DG is a high-performance, low-dropout (LDO) voltage regulator featuring a wide input voltage range of 1.2V to 5.5V and adjustable output voltage from 0.9V to 3.3V. It is an ideal choice for low-power or battery-powered applications. The LD1117V-DG features a low quiescent current (Iq) of 40µA at 0.84V output voltage and 35µA at 3.3V output voltage, reducing system power consumption and extending battery life. In addition, the LD1117V-DG provides fast transient response and low output noise.

The LD1117V-DG is widely used in power supply applications such as PC server and ITE Adaptors, Mobile phones, PDAs, TV appliances and sub-notebooks. The wide input voltage range, fast transient response, low noise and low quiescent current make the LD1117V-DG an excellent choice for these applications.

The LD1117V-DG features an internal compensation network that stabilizes the output current and reduces output ripple. The LD1117V-DG also features a built-in thermal shut-down protection that limits the junction temperature of the LDO to protect itself and the powered system. In addition, the LD1117V-DG features line, load and current limit protections that protect the device from over-voltage, over-current and over-temperature.

The LD1117V-DG works by regulating the input voltage to provide a constant output voltage. It senses the load current and adjusts the output voltage as needed to maintain the desired output voltage. The output voltage is adjustable through a single external resistor and the error amplifier is unity-gain compensated. The LD1117V-DG has an operating frequency of 250kHz and is available in the TO-220-5 and SMD 3x2 packages.

In summary, the LD1117V-DG is a versatile, cost-effective voltage regulator designed to provide reliable power in a variety of voltage applications such as PC servers and ITE Adaptors, mobile phones, PDAs, TV appliances and sub-notebooks. It features a wide input voltage range, fast transient response, low noise, low quiescent current and line, load and current-limit protections. The LD1117V-DG is an ideal choice for low-power or battery-powered applications.

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