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PMIC - Voltage Regulators - Linear

The BD7003NUX-E2 is a linear voltage regulator from ROHM, designed for cost-effective battery-operated applications. It offers industry-leading low noise and low quiescent current for longer battery life. Its low power applications allow for output current accuracy over a wide range of operational conditions, eliminating the need for external resistors. The LDOs are designed for I/O voltage range from 2.4V to 12V and a wide output voltage range from 0.8V to 10V. This enables the output voltage accuracy of ±1.0% and maximum output current of 1.2A.

The BD7003NUX-E2 is an ideal choice for many battery-operated device applications, such as unused digital cameras, wireless base stations, wireless gateways, and remote controls. Its robust design allows it to operate in a harsh battery environment. Moreover, the higher efficiency and lower quiescent current of the BD7003NUX-E2 enable devices to be powered for longer duration and enable higher battery utilization.

Application Field

The BD7003NUX-E2 is a versatile LDO that is suitable for many applications with low power requirements. These include power supply systems for unused digital cameras, wireless base stations, wireless gateways, remote controllers, medical diagnostic equipment, and portable medical systems. It is also an ideal power solution for mobile phones, MP3 players, and other low power devices.

The BD7003NUX-E2 offers high accuracy and full protection against over-current, over-voltage, and thermal shutdown. These features make it ideal for use in a wide range of applications such as PC peripherals, audio amplifiers, and industrial control systems. Additionally, the rugged construction of the BD7003NUX-E2 allows it to operate in harsh environments such as in a vehicle or on a noisy ship.

Working Principle

At its core, the BD7003NUX-E2 is a linear voltage regulator with a single operational amplifier and an N-channel MOSFET as its load. A single operational amplifier is used to control the voltage drop across the MOSFET, which in turn regulates the output voltage. The operational amplifier compares the output voltage of the LDO with a reference voltage and adjusts the gain of the MOSFET so that the output voltage is regulated to the reference voltage.

The BD7003NUX-E2 employs an internal N-channel MOSFET with a low on-resistance to minimize the voltage drop across it. This allows the BD7003NUX-E2 to provide accurate output voltage regulation, while maintaining a low quiescent current.

The BD7003NUX-E2 includes built-in protection features to protect against over-current, over-voltage and thermal shutdown. These protection features ensure reliable system operation even in harsh conditions.

In summary, the BD7003NUX-E2 is an ideal choice for low power applications. It provides a low noise, low quiescent current, and low output voltage accuracy with maximum output current of 1.2A. The built-in protection features make it suitable for use in a wide range of applications. With its rugged construction, it can operate reliably in harsh environments.

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