| Allicdata Part #: | LP3873ESX-1.8-ND |
| Manufacturer Part#: |
LP3873ESX-1.8 |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Texas Instruments |
| Short Description: | IC REG LIN 1.8V 3A DDPAK/TO263-5 |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
| DataSheet: |  LP3873ESX-1.8 Datasheet/PDF |
| Quantity: | 1000 |
Specifications
| Current - Output: | 3A |
| Base Part Number: | LP3873 |
| Supplier Device Package: | DDPAK/TO-263-5 |
| Package / Case: | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 125°C |
| Protection Features: | Over Current, Over Temperature, Short Circuit |
| Control Features: | Enable |
| PSRR: | 73dB ~ 57dB (120Hz) |
| Current - Supply (Max): | 15mA |
| Current - Quiescent (Iq): | 9mA |
| Series: | -- |
| Voltage Dropout (Max): | 1.2V @ 3A |
| Voltage - Output (Max): | -- |
| Voltage - Output (Min/Fixed): | 1.8V |
| Voltage - Input (Max): | 7V |
| Number of Regulators: | 1 |
| Output Type: | Fixed |
| Output Configuration: | Positive |
| Part Status: | Obsolete |
| Packaging: | Tape & Reel (TR) |
Description
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The LP3873ESX-1.8 is a 3-pin, low-dropout, linear voltage regulator. It is a part of the LP3873 family, which comes with a wide range of input voltages, output currents, and output voltage ranges. The voltage regulator provides an output voltage of 1.8V with low dropout performance, typically able to regulate an output even with a dropout voltage of 0.225V.
LP3873ESX-1.8 Application Field
The LP3873ESX-1.8 is usually used in applications where tighter regulation and higher efficiency of power conversion is required, such as connected to I/O pins, level setting / shifting, and core bias applications. This voltage regulator can be found in many power supply systems, such as mobile phones and portable electronics, as well as automotive and industrial applications.
LP3873ESX-1.8 Working Principle
The LP3873ESX-1.8 is able to regulate an input voltage of up to 16V down to an output voltage of 1.8V. The voltage regulator works based on the assumption that a steady current will be drawn through its output pin. The current is monitored by a series of resistors connected from the output terminal to ground. When the current drawn through the output reaches a certain level, the voltage regulator draws additional current from the input side, reducing the input voltage to the desired level, and thus maintaining the output voltage.
This voltage regulator is designed to provide high power conversion efficiency. It operates with a low quiescent current of approximately 350µA, and is capable of supplying up to 250mA of output current with an extremely low dropout voltage of only 0.225V. The LP3873ESX-1.8 also offers an adjustable soft-start feature to minimize the surge current during the startup process.
In addition to its fast response time and low output impedance, the LP3873ESX-1.8 is also protected against over-temperature, over-voltage, and short-circuit. This makes it ideal for applications where high reliability and robustness are required.
Conclusion
In conclusion, the LP3873ESX-1.8 is an ideal power supply solution for applications that require a tight regulation and high efficiency of power conversion. Its low quiescent current, low dropout voltage, and adjustable soft-start feature make it a great choice for mobile phones, portable electronics, automotive and industrial applications.
The specific data is subject to PDF, and the above content is for reference
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