BU18SD5WG-TL Integrated Circuits (ICs) |
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Allicdata Part #: | BU18SD5WG-TLTR-ND |
Manufacturer Part#: |
BU18SD5WG-TL |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ROHM Semiconductor |
Short Description: | IC REG LINEAR 500MA 5SSOP |
More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
DataSheet: | BU18SD5WG-TL Datasheet/PDF |
Quantity: | 1000 |
Series: | * |
Packaging: | Tape & Reel (TR) |
Part Status: | Active |
Number of Regulators: | 1 |
Current - Output: | 500mA |
Operating Temperature: | -40°C ~ 105°C |
Mounting Type: | Surface Mount |
Package / Case: | SC-74A, SOT-753 |
Supplier Device Package: | 5-SSOP |
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BU18SD5WG-TL is a type of low dropout (LDO) linear voltage regulator, which belongs to the category of linear voltage regulators. Its application field is widely in power management integrated circuits (PMIC). It functions as an anti-noise filter to suppress EMI, and switch between power sources by responding to voltage fluctuation quickly during the process of power on/off.
BU18SD5WG-TL is suitable for a range of DC input voltage from 1.5V to 6V and supports a wide output voltage range from 0.8V to 5V. The device is capable of supplying a maximum output current of 600mA, which is suitable for high-current applications. The minimum quiescent current of the device is around 1.5μA and it provides over temperature protection, output short-circuit protection, over voltage protection (OVP) and reverse current protection (RCP). It is provided in a small SOT-89 package and the maximum junction temperature is 125°C, making it an excellent choice for hot and humid environments.
Working Principle
BU18SD5WG-TL is an advanced version of LDO Linear voltage regulator, which features a feedback voltage array combined with both a current booster and a regulating element, making it the ideal choice for all types of low-voltage applications. The linear regulator device consists of a control circuit and an output stage. The control circuit is basically responsible for monitoring and controlling the output voltage of the regulator.
The output stage of the regulator is basically a pass-transistor, which allows current to flow through it, depending on the voltage at the base of the transistor. When the output voltage drops below the desired level, the control circuit senses the drop and causes the base voltage of the pass-transistor to increase, thus increasing the flow of the current and resulting in the rise of the output voltage.
The feedback voltage array employed in the BU18SD5WG-TL is mainly responsible for ensuring a precise output voltage of the regulator. The feedback voltage array consists of a voltage-error amplifier, a bunch of resistors, and a reference voltage source which provides the reference voltage for the amplifier. The voltage-error amplifier compares the preset reference voltage with the output voltage and gives signal to the control circuit accordingly, resulting in a precise and stable output voltage.
In addition to its reliable performance, BU18SD5WG-TL also ensures a low quiescent current and high efficiency by using a special low-noise bipolar power transistor and various integrated circuits. The device is also capable of providing protection against over-temperature, over-voltage, reverse-current and short-circuit conditions.
In summary, BU18SD5WG-TL is a low dropout (LDO) Linear voltage regulator which is designed for portable devices that require low quiescent current and high efficiency. Its application field is widely in power management integrated circuits (PMIC) such as in the field of battery-powered applications, smart phones, tablets and other portable devices. It functions as an anti-noise filter to suppress EMI, and switch between power sources by responding to voltage fluctuation quickly during power on/off.
The specific data is subject to PDF, and the above content is for reference
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