L4995RK

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L4995RK is a linear voltage regulator, which is a type of PMIC (Power Management Integrated Circuit) voltage regulator. It is designed for applications such as battery-powered systems, microprocessor or microcontroller-powered systems, telecommunications systems, and AC-DC and DC-DC power supplies. The L4995RK regulator functions by providing low-output voltage stabilization on a single-output microprocessor- and microcontroller-based systems.

The L4995RK has a wide input voltage range of 3.6 V to 40 V, and an output voltage range of 0.8 V to 28 V. It can handle up to 1.5 A of current and has a maximum power dissipation of 5 W. The device is available in a variety of packages, including Operational Amplifier (OPAMP) Packages, Standard Small Outline (SSOP) Packages, and Thermal Expansion Modules (TEMs). The device can also be customized to meet customer requirements.

Internally, the L4995RK uses a special circuit design that actually functions as two independent voltage regulators. In this circuit, an internal voltage feedback (NFBDA) uses the output voltage of one regulator to power the other. This allows the device to maintain an accurate and stable output voltage, even with input voltage variations. The NFBDA circuit ensures stability at an output voltage of 1.5V or less, and can also be used for multi-voltage systems or as a multi-output voltage regulator.

The L4995RK contains an internal short-circuit protection circuit (SCPC) that can be enabled and disabled via the device’s enable/disable input (EN_EN). The SCPC prevents the device from overheating and avoiding violating the maximum power dissipation of the device. The SCPC can be disabled if the output current is below 1A. If the output current is above 1A, the SCPC should be enabled.

The L4995RK also has an Automatic Shutdown feature (ASD) in which the device will automatically disable itself under certain conditions for Thermal or Overcurrent protection. This feature helps protect the device from damage due to excessive current or temperature. The logic levels of the ASD pin can be programmed as either active high or active low, depending on the application.

The L4995RK is an excellent choice for development of a wide range of AC-DC and DC-DC power supplies. Its wide input voltage range and internal feedback circuit makes it an ideal choice for development of battery-powered systems, telecommunications systems, and AC-DC and DC-DC power supplies requiring linear regulation. Its internal short-circuit protection and Automatic Shutdown features protect the device from damage in various applications.

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