BU33UV7NUX-E2 Integrated Circuits (ICs)

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BU33UV7NUX-E2 Application Field and Working Principle

The BU33UV7NUX-E2 DC-DC switching regulator is a voltage regulator manufactured by ON Semiconductor. This particular series of regulators is part of the ON Semiconductor PMIC – Voltage Regulators – DC-DC Switching Regulators collection, and is capable of regulating voltage output between 0.88V to 5.50V. These are known as Step Down converters and offer power efficiency up to 92%.

Features and Benefits

• Small package size - TSDSO8-EP, allowing for increased space savings on customer PCBs
• Built-in soft-start/pre-charge circuit
• High efficiency - up to 92%
• Low input current ripple
• Programmable frequency up to 1MHz
• Lower output voltage ripple
• External softstart ramp input
• 3-mode analog control (current limit, voltage limit, and frequency limit)
• Fault protection (input undervoltage lock-out, overload, and overtemperature)

Applications and Uses

This BU33UV7NUX-E2 series is ideal for applications where space conservation is of particular importance and a high-performance regulator is needed. Examples of such applications include but are not limited to portable electronics, server and storage power racks, industrial, and telecom equipment.

This regulator is also well-suited for use in the automotive industry, helping to power intelligent transportation system (ITS) applications such as automotive infotainment systems and driver assistance systems. The regulator offers a rugged design, built-in protections, and excellent thermal performance, making it a great product for automotive usage.

Working Principle

The BU33UV7NUX-E2 DC-DC switching regulator utilizes one or more switches in order to step down an input voltage (Vin) to a regulated output (Vout) voltage. The motor controls the switches, and depending on the voltage values current flow is either enabled or disabled. In essence, the switch acts as if it is a resistor and will translate a certain voltage level to a lower voltage level. The switch is then used to turn the power on and off over a wide range of input and output voltages, resulting in very efficient operation.

The regulator offers an input voltage range of 6V- 36V, with a maximum output current of 1.0A. This regulator also features programmable frequency, allowing users to adjust frequency up to 1MHz to improve efficiency. The regulator also offers built-in soft-start/pre-charge circuit and 3-mode analog control which helps to ensure smooth start-up and minimum output voltage ripple.

Conclusion

The BU33UV7NUX-E2 DC-DC switching regulator is a high-performance voltage regulator manufactured by ON Semiconductor. This regulator is part of the ON Semiconductor PMIC – Voltage Regulators – DC-DC Switching Regulators collection and is capable of regulating voltage output between 0.88V to 5.50V with an efficiency up to 92%. The regulator is an ideal choice for applications where space conservation is of particular importance and a high-performance regulator is needed due to its small package size, programmable frequency, its 3-mode analog control, as well as its built-in soft-start/pre-charge circuit and fault protection features.

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