BU90003GWZ-E2 Integrated Circuits (ICs)

PMIC - Voltage Regulators - DC DC Switching Regulators

BU90003GWZ-E2 is a part of DC DC switching regulators which is suitable for all kinds of applications. It is an integrated package of an integrated low dropout (LDO) voltage regulator (VR), a high efficiency Linear Power Booster (LPB) and one or two power supply switches. The set of circuits can increase the output voltage of the input source to generate a more optimized output.

Application Field

The BU90003GWZ-E2 is an ideal part for applications such as automotive, consumer electronics, and portable devices. Automotive applications for this part include voice/data communication systems, GPS, head- unit/audio systems, and automotive monitoring systems. In consumer electronics, the part is used for portable battery powered devices such as smartphones and digital cameras. The portable powered devices can include a wide range of products from feature number to traditional mobile devices.

Working Principle

The BU90003GWZ-E2 converter works based on the Buck-boost topology. This topology allows the output voltage to increase or decrease based on the input voltage. The buck-boost converter contains transistors and diodes which are connected in a way that it is able to maintain a steady output voltage even as the input voltage is varying.

The integrated low dropout (LDO) voltage regulator (VR) is responsible for controlling and regulating input and output voltages. It reduces line fluctuations caused by switching in the buck-boost loop and also makes sure that there is a steady output voltage regardless of the fluctuations in the input voltage. The LDO voltage regulator is adjustable which means the user can adjust the output voltage to the required level with the help of external resistors.

The Linear Power Booster (LPB) is used to increase the output voltage when the input voltage is low. The LPB is integrated in the BU90003GWZ-E2 and its job is to boost the input voltage by a certain amount to raise the output voltage. This LPB also acts as a voltage regulator, ensuring the output voltage is steady even when there are fluctuations in the input voltage.

The BU90003GWZ-E2 uses one or two power supply switches to control the voltage. These switches are connected in series and the on/off status of the switches determines the output voltage. To reduce the power consumption and minimize the heat, the operation frequency of the switches can be adjusted. The power supply switches are adjusted using external resistors to set the desired frequency.

The BU90003GWZ-E2 is suitable for a wide range of applications and can provide great performance and power saving features. With its topology and advanced features, it will provide reliable power and improved efficiency for your device.