LM309H

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The LM309H is a linear voltage regulator (LVR) that belongs to a range of Polymorphic Microelectronics Corporation (PMIC) Voltage Regulators. LVRs are used to produce a constant voltage output in the presence of a voltage input that may vary momentarily or over time. The LM309H provides adjustable outputs of up to 30 volts and up to 1A of current, and features an integrated heat sink to help dissipate large amounts of thermal energy. Moreover, the device has various features to ensure an accurate output, as well as over-temperature protection and a power reduction mode, making it suitable for a variety of applications.

Linear voltage regulators are very common in the power management industry due to their high performance, reliability, and cost-effectiveness. They are commonly used to convert a DC input (such as from a battery or power supply) to a continuous, low noise DC output voltage that is suitable for a variety of applications. When a voltage input is higher than the target voltage, the LVR draws current from the input and drops the excess voltage off as heat, using a pass element. The LM309H utilizes two of these devices in a high power voltage regulator configuration, enabling it to generate a stable output with fast response and low dropout characteristics.

The LM309H features a wide input range of 5V to 45V and a wide adjustable output range of 1V to 30V. It is capable of delivering up to 1A of output current, with a dropout voltage of less than 0.5V. This device also features short-circuit protection and current limiting, and boosts its thermal performance with an integrated heatsink. Moreover, it offers input-based temperature sensing and optional current limiting, as well as automatic thermal shutdown, setting it apart from other LVRs. Additionally, it is available in an 8-pin MSOP package.

The LM309H is widely used in mobile devices, providing low noise and better protection for sensitive electronic components. It is also used in a wide range of industrial and consumer applications, including power supplies, battery chargers, and medical or avionic systems. The device is one of the most efficient and highest performance LVRs on the market, making it a popular choice for systems that require a stable voltage input but need to operate in noisy environments.

The LM309H uses a single output state control circuit to adjust the output voltage of the device. When the voltage input is greater than the reference voltage, a voltage divider begins to charge the output capacitor. Once the output capacitor is full, the control circuit will adjust the current flow to keep the output voltage constant, regardless of input voltage changes. This feature makes the LM309H useful for creating oscillators, maintaining constant voltage during abrupt load changes, and for a wide variety of power management applications.

In conclusion, the LM309H is an efficient and adjustable linear voltage regulator from PMIC\'s Voltage Regulators family. It features a wide input voltage range, up to 1A of output current, and an integrated passive heatsink to dissipate any excess thermal energy generated by the device. Moreover, it provides short-circuit protection, current limiting and temperature sensing, making it suitable for a variety of industrial and consumer power management applications. Additionally, its single-output state control circuit ensures stable output regulation regardless of changes in the input voltage.

The specific data is subject to PDF, and the above content is for reference