BD15HA3WEFJ-E2

The BD15HA3WEFJ-E2 is a linear voltage regulator integrated circuit (IC) manufactured by Rohm Semiconductor. It is one of Rohm’s latest high-accuracy and low-power linear regulators, making it suitable for a wide range of applications.

Overview

The BD15HA3WEFJ-E2, a member of the Rohm Semiconductor family of linear voltage regulators, is designed for low-power and accurate voltage regulation. With its high-accuracy, low-output resistance, and low-dropout voltage, the device provides a highly stable output under significant load changes.

The BD15HA3WEFJ-E2 is capable of regulating output voltage from 0V to 15V with a maximum load current of 3A. To ensure lowest power consumption, the device features low-average current consumption. The device’s quiescent current is only 1.2A, which is significantly lower than that of other linear regulators.

Features

• Input voltage range: 4.5V to 25V
• Output voltage range: 0V to 15V
• Output current: 3A
• Ripple rejection: -70dB
• Low-average current consumption: 1.2A
• Low-dropout voltage: 1.8V
• Built-in thermal protection
• Temperature range: -40°C to +150°C

Applications

The BD15HA3WEFJ-E2 is suitable for a wide range of applications, such as laptop and notebook PCs, digital cameras, cell phones, PDAs, portable music players, and other kinds of low-power, high-accuracy circuit applications that require highly regulated output voltage.

Working Principle

The BD15HA3WEFJ-E2 is a linear voltage regulator IC. It works by controlling the output voltage so that it is always equal to a reference voltage, Vref. The basic process is as follows:

The reference voltage is compared to the input voltage and the difference between them is amplified and used to control the output voltage. In this way, the output is always maintained at the desired voltage level. This is known as the voltage regulation principle.

The BD15HA3WEFJ-E2 is designed to guarantee a very tight regulation of output voltage, which means that there is very little variation in output voltage from the reference voltage. This is achieved by using low-dropout voltage and low-impedance regulation.

The BD15HA3WEFJ-E2 also features built-in thermal protection, which ensures that the device does not overheat even when operating in high temperatures. The temperature range is -40 to +150 degrees Celsius.

Conclusion

The BD15HA3WEFJ-E2 is a linear voltage regulator IC manufactured by Rohm Semiconductor. It is capable of regulating output voltage from 0V to 15V with a maximum load current of 3A. It features low-average current consumption, low-dropout voltage, and built-in thermal protection. It is suitable for a wide range of low-power and high-accuracy circuit applications.