| Allicdata Part #: | LP3872ES-2.5-ND |
| Manufacturer Part#: |
LP3872ES-2.5 |
| Price: | $ 2.92 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Texas Instruments |
| Short Description: | IC REG LIN 2.5V 1.5A DDPAK/TO263 |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
| DataSheet: |  LP3872ES-2.5 Datasheet/PDF |
| Quantity: | 1000 |
| 135 +: | $ 2.65108 |
Specifications
| Current - Output: | 1.5A |
| Base Part Number: | LP3872 |
| 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): | 5mA |
| Series: | -- |
| Voltage Dropout (Max): | 0.55V @ 1.5A |
| Voltage - Output (Max): | -- |
| Voltage - Output (Min/Fixed): | 2.5V |
| Voltage - Input (Max): | 7V |
| Number of Regulators: | 1 |
| Output Type: | Fixed |
| Output Configuration: | Positive |
| Part Status: | Not For New Designs |
| Packaging: | Tube |
Description
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Figure 1: LP3872ES-2.5 Voltage RegulatorFeatures
The LP3872ES-2.5 is an ideal voltage regulator for low power, noise-sensitive devices. Offering excellent output accuracy (typically up to ±1% over a broad range of input and output voltages), low ripple and noise, and wide input and output voltage range from 2.8V to 6V, it is ideally suited for design of complex, reliable, and efficient power supply solutions. The LP3872ES-2.5 also features over-temperature protection, over-current protection, and short-circuit protection. Its output voltage is adjustable by changing the external resistor which allows varying output voltage between 0.5V to 3.2V. In applications where the output voltage is changed frequently, it supports dynamic program mode, allowing fast and accurate output voltage changes.Applications
The LP3872ES-2.5 is designed for a wide range of applications including touchscreens, mobile phones, GPS systems, PDAs, and digital cameras. It is optimized for ultra low-power applications, such as low-power LCDs and backlighting, OLEDs, digital cameras, and animation displays. It is also suitable for applications which require simple, efficient, and low noise power supply solutions.Working Principle
The LP3872ES-2.5 is a high performance, low-dropout Linear voltage regulator. It consists of two stages, the linear regulator, and the voltage reference, which allow for low dropout and good performance even at low output currents. The linear regulator is divided into three sections: an error amplifier, the pass element (MOSFET), and the bias circuitry. The error amplifier compares the output voltage to a reference voltage, VREF, and corrects the output voltage accordingly, while the pass element sets the output voltage. The voltage reference is a bandgap reference generator which is used to set the output voltage to the desired level.The error amplifier also monitors the pass element and adjusts the bias, or gate voltage, as necessary to maintain a stable output voltage. The pass element is typically a MOSFET, which acts as a resistance in series with the output voltage. The gate voltage, or bias, of the MOSFET is adjustable and is typically adjusted by the error amplifier, to optimize the output voltage.Conclusion
The LP3872ES-2.5 is a high performance, low-dropout linear voltage regulator designed for use in mobile and handheld electronic applications, such as touchscreens, digital cameras, and portable devices. It offers excellent output accuracy and very low output voltage noise. The LP3872ES-2.5 features temperature protection, over-current protection and short-circuit protection, and supports dynamic programming mode, enabling fast and accurate output voltage changes. With its low dropout voltage, high output accuracy, and low ripple and noise, it is ideal for design of reliable, efficient power supply solutions.The specific data is subject to PDF, and the above content is for reference
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