| Allicdata Part #: | LT1521IST-3.3#PBF-ND |
| Manufacturer Part#: |
LT1521IST-3.3#PBF |
| Price: | $ 3.56 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Linear Technology/Analog Devices |
| Short Description: | IC REG LIN 3.3V 300MA SOT223-3 |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
| DataSheet: |  LT1521IST-3.3#PBF Datasheet/PDF |
| Quantity: | 2914 |
| 1 +: | $ 3.23190 |
| 25 +: | $ 2.14402 |
| 100 +: | $ 1.73502 |
Specifications
| Current - Output: | 300mA |
| Base Part Number: | LT1521 |
| Supplier Device Package: | SOT-223-3 |
| Package / Case: | TO-261-4, TO-261AA |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 125°C |
| Protection Features: | Over Current, Over Temperature, Reverse Polarity |
| Control Features: | Enable |
| PSRR: | 58dB (120Hz) |
| Current - Supply (Max): | 12mA |
| Current - Quiescent (Iq): | 25µA |
| Series: | -- |
| Voltage Dropout (Max): | 0.75V @ 300mA |
| Voltage - Output (Max): | -- |
| Voltage - Output (Min/Fixed): | 3.3V |
| Voltage - Input (Max): | 20V |
| Number of Regulators: | 1 |
| Output Type: | Fixed |
| Output Configuration: | Positive |
| Part Status: | Active |
| Packaging: | Tube |
Description
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The LT1521IST-3.3#PBF is a linear voltage regulator, which is a type of PMIC that has the function of providing its outputs with steady, stable, electronic power. This regulator is generally used for scenarios where power requirements are not particularly extreme, making it an ideal choice for low-power applications.This small voltage regulator has an output current capability of 250mA, an operating temperature range of -40 to 85°C, and a full load dropout voltage of 1.7V. This regulator is also equipped with a shutdown feature, allowing it to be completely deactivated when not in use, which helps improve energy efficiency.In terms of function, the LT1521IST-3.3#PBF works by converting a higher input voltage to a lower output voltage. In order to do this, the regulator utilizes a linear voltage regulation process, employing an internal voltage reference (also known as a bandgap reference), a series pass transistor, and other components to achieve the required output.The series pass transistor, commonly referred to as the pass transistor, is responsible for the upper limit of output voltage for the regulator, and the reference voltage, which is generated by the bandgap reference, provides a measure of the required output voltage.Once the output voltage is determined, the pass transistor then acts as a variable resistor that alters its resistance to vary the output voltage accordingly. This regulation process occurs in a linear fashion and is essentially regulated by a feedback loop, whereby the reference voltage is compared with the output voltage and corrective measures taken to bring the two values closer until they match.The LT1521IST-3.3#PBF is commonly used in various low-power applications including microcontrollers, embedded systems, instrumentation, and portable devices. The overall power requirement is relatively low, thus making it a suitable choice for these types of applications.It is important to note that proper heat dissipation must be ensured in order to prevent any damage to the device, highlighting the importance of taking the necessary precautions when handling the regulator. The maximum power dissipation of the device is specified in the datasheet, and it is important to ensure that the device is not operated beyond this value.In conclusion, the LT1521IST-3.3#PBF is a linear voltage regulator, which is a type of PMIC that has the function of providing its outputs with steady, stable, electronic power. Its main advantage is its ability to provide low-power capability without consuming too much energy. This makes it the ideal choice for low-power applications, and its common use in microcontrollers, embedded systems, instrumentation and portable devices further highlights its practical utility.
The specific data is subject to PDF, and the above content is for reference
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