AN79L09ME1

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AN79L09ME1 is a high performance low drop positive voltage regulator with an adjustable output current up to 1A. It is a part of a group of Linear Voltage Regulators (LVRs) designed to act as power supplies in many applications.

The device contains a voltage reference, voltage control circuitry, and an internal pass transistor, which is designed to operate as a low dropout (LDO) regulator over a wide input voltage range. The output current is determined by an embedded preset current limit feature or externally by an adjustable RSI (Ramp Slope Intercept) pin.

Convenient features like enable and power good signals enable for easy ON/OFF control and monitoring of operating parameters. Its high-current limit, low current limit, compact size, and low quiescent current make it an excellent choice for low-cost, low to medium current applications.

Applications of AN79L09ME1 include voltage regulation in computers, automotive, telecommunications, and medical equipment. In addition, the device can be used in battery-powered systems, portable electronics, and many other applications.

The AN79L09ME1 operates by setting the output voltage at a preset value, and then controlling its output in response to changes in input voltage or load. The output voltage is set by the combination of an internal Voltage Reference, Low Drop Out (LDO) pass transistor, and RSI (Ramp Slope Intercept) pin.

The internal voltage reference used in AN79L09ME1 has an on-chip temperature tolerance of ±0.1%/°C and operates over a wide temperature range of -40°C to +125°C. The low-dropout (LDO) pass transistor increases provide a stable output voltage even with low input voltages. The RSI pin can be used to program the output current limit of the device, making it suitable for a wide range of loads.

The power good signal of the device can be monitored by the user to prevent damage to the system due to a sudden drop in output current or incorrect operation due to temperature change or fault conditions. The enable input allows for easy ON/OFF control, where the device can be turned off and on with a single pin. This feature makes the device suitable for applications such as sleep mode or other time-critical operations.

AN79L09ME1 is a versatile, high performance regulator for many applications requiring low voltage and current regulation. Its combination of features, compact size and wide operating temperature range make it an ideal choice for a variety of applications.

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