BD15GC0MEFJ-LBH2

The BD15GC0MEFJ-LBH2 is a linear voltage regulator device used to provide a regulated DC output voltage from an unregulated DC input voltage. It is typically used in DC power supplies, as a part of a power converter design, for example in telecom applications, or in a Voltage Controlled Oscillator (VCXO).

Input and Output Voltage Ranges

The BD15GC0MEFJ-LBH2 provides a regulated output voltage from the input voltage range of 3.3V up to a maximum of 20V. The output voltage can be adjusted by setting a resistor divider at the adjust pin to the desired output voltage.The maximum output current capability is 200mA, and the device provides protections against overcurrent, short circuit, and thermal shut down.

Features and Benefits

The BD15GC0MEFJ-LBH2 features high slew rate, low drop-out voltage, overcurrent protection and thermal protection. The low drop-out voltage ensures that the output voltage remains within a few percent of the desired voltage even when the input voltage is heavily loaded. The device also features low noise levels and is designed to achieve a high power efficiency. The device has a fault input protection, which disables the device in the event of an over-temperature or over-current event.

Application of the BD15GC0MEFJ-LBH2

The BD15GC0MEFJ-LBH2 is an ideal device for use in voltage regulation applications, including switching DC/DC and linear DC/DC converters, as well as for pulse controlled oscillators. It is also suitable for use in battery powered, industrial, telecom and automotive applications, providing a regulated voltage from the battery source. The device is also used in audio and video signal conditioning, such as in signal amplifiers, as well as in AC to DC and DC to DC power converters.

Working Principle

The BD15GC0MEFJ-LBH2 is a three-terminal linear voltage regulator device. The ground terminal is connected to the common ground of the system and a regulated DC output voltage is obtained at the output terminal. The third terminal, the adjust pin, is used to adjust the output voltage by using a resistor divider. The output voltage of the device is additionally clamped by the overvoltage protection circuit and a surge protection circuit.

The device features an onboard current limiting scheme. When the device is over-loaded, the current increases and a sense resistor, connected in series with the chip, senses the increase in the current. When the sensed voltage exceeds a certain level, the integrated current limit circuit turns off the output, reducing the current to a safe level and protecting the device against over-current.

The device also features a thermal protection circuit, which is designed to shut off the output when it detects an excessive junction temperature. This mechanism helps to prevent damages to the device due to heat accumulation.

The BD15GC0MEFJ-LBH2 is a robust device with a wide input voltage range and low quiescent current, making it an ideal linear voltage regulator for a wide range of applications.