BD18HA5WEFJ-E2

Introduction

The BD18HA5WEFJ-E2 is a voltage regulator IC designed for a variety of linear applications such as voltage stepping, voltage clamping, voltage threshold adjustment, and voltage stabilizing. It is a monolithic regulator IC specifically designed for low-density and low-power applications such as those found in consumer electronics, automotive systems, and power management systems.

Application Field

The BD18HA5WEFJ-E2 is a three-pin voltage regulator with a maximum input voltage of 40V and an output voltage range of 1.5V to 24V. It has a power output of 500mW and a quiescent current of 1mA. It is designed for high-efficiency operation and has a typical line regulation of 0.01% and a typical load regulation of 0.1%. It is also designed for low noise operation with a typical input-to-output noise of 1µVrms. This makes it ideal for use in applications requiring high voltage precision, such as data conversion, power supply sequencing, and other low power applications. It is also suitable for operating loads with steep rise or fall times, such as those in redundant power systems.

The BD18HA5WEFJ-E2 is also suitable for use in automotive systems where its low quiescent current, high efficiency, and low noise can reduce power losses during braking and acceleration. It is also suitable for applications requiring high reliability such as those found in aerospace and aeronautic systems. In addition, its small size and light weight make it suitable for use in portable systems.

Working Principle

The BD18HA5WEFJ-E2 is a linear voltage regulator that converts the input voltage to an output voltage that is precisely regulated. The IC has an internal comparator that continuously monitors the input voltage, and switches a voltage control element (MOSFET) in order to keep the output voltage precisely regulated. The required input voltage for a given output voltage is determined by the internal feedback network.

The BD18HA5WEFJ-E2 regulator IC also features an adaptive on-time control circuit that ensures fast transient response and closely follows the input voltage. This allows the output voltage to remain precisely regulated even during load transients. The IC also has low voltage, current limit, and overtemperature protection circuits to protect the IC and the connected application.

Conclusion

The BD18HA5WEFJ-E2 is a three-pin voltage regulator IC designed for a variety of linear applications. It has a wide input voltage range, and a low quiescent current and high efficiency that make it ideal for low-power, low-density applications. It is also suitable for automotive and aerospace system, and its small size makes it suitable for use in portable systems. The BD18HA5WEFJ-E2 has an internal comparator and voltage control element that keep the output voltage precisely regulated, and an adaptive on-time control circuit that allows for fast transient response. The IC also has protection circuits for current limiting, overtemperature, and low voltage conditions.