LP3981ILDX-2.8

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LP3981ILDX-2.8

IC REG LINEAR 2.8V 300MA 6-WSON

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Specifications

Part Status Obsolete
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 6V
Voltage - Output (Min/Fixed) 2.8V
Voltage Dropout (Max) 0.2V @ 300mA
Current - Output 300mA
Current - Quiescent (Iq) 120 µA
PSRR 50dB ~ 55dB (1kHz ~ 10kHz)
Control Features Enable
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package / Case 6-WDFN Exposed Pad
Supplier Device Package 6-WSON (3x4)
Base Product Number LP3981
Current - Supply (Max) 210 µA

Overview

Description

The LP3981ILDX-2.8 is a low-dropout (LDO) voltage regulator from Texas Instruments designed to provide a stable output voltage of 2.8V. It features a high power supply rejection ratio (PSRR) and low output noise, making it suitable for sensitive analog and RF applications. With a maximum output current of 150 mA, it is ideal for powering low-power devices such as microcontrollers, sensors, and other electronic components.
Key specifications include an input voltage range of 2.5V to 16V, low dropout voltage (typically around 200 mV at full load), and an operating temperature range of -40°C to 125°C, ensuring reliability in various environments. The device also includes features like thermal shutdown and current limiting for protection against overload conditions.
The LP3981ILDX-2.8 is available in a small SOT-23 package, making it suitable for space-constrained applications. Its combination of efficiency, low noise, and compact design makes it a popular choice for designers looking for a robust power supply solution.

Features

The LP3981ILDX-2.8 is a low-dropout (LDO) voltage regulator designed to deliver a stable output voltage of 2.8V. Key features include:
1. Input Voltage Range: Accepts input voltages from 2.5V to 16V.
2. High Output Current: Capable of providing up to 1A of output current.
3. Low Dropout Voltage: Typical dropout voltage of around 300mV at 1A load, allowing for efficient operation with minimal voltage overhead.
4. Fast Transient Response: Ensures stable output during sudden load changes, making it suitable for sensitive applications.
5. Built-in Protection: Features include thermal shutdown and current limiting to protect against overload conditions.
6. Low Quiescent Current: Designed for low power consumption, ideal for battery-operated devices.
7. Compact Package: Available in a small footprint package, facilitating easy integration into space-constrained designs.
These features make the LP3981ILDX-2.8 suitable for various applications, including portable electronics, communication devices, and automotive systems.

Package

The LP3981ILDX-2.8 is packaged in a 5-pin SOT-23 (SOT-23-5) format. This compact surface-mount package is suitable for space-constrained applications.

Pinout

The LP3981ILDX-2.8 is a low-dropout (LDO) voltage regulator with a pin count of 5. The functions of the pins are as follows:
1. Pin 1 (Input): This is the supply voltage input pin, where the input voltage is applied.
2. Pin 2 (Ground): This pin is connected to the ground reference of the circuit.
3. Pin 3 (Output): The regulated output voltage (2.8V in this case) is available at this pin.
4. Pin 4 (Enable): This pin is used to enable or disable the regulator. A logic high on this pin activates the output.
5. Pin 5 (Bypass): This pin can be used to connect a bypass capacitor to improve transient response and noise performance.
The LP3981ILDX-2.8 is designed to deliver a stable output with low dropout voltage, making it suitable for battery-powered applications.

Manufacturer

The LP3981ILDX-2.8 is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components, including analog, embedded processing, and digital signal processing products. Founded in 1930 and headquartered in Dallas, Texas, TI serves various markets, including automotive, industrial, communications, and consumer electronics. The company is known for its innovation and leadership in the semiconductor industry, providing solutions that enhance performance and efficiency in electronic devices.

Application

The LP3981ILDX-2.8 is a low-dropout linear voltage regulator commonly used in portable devices, battery-powered applications, and consumer electronics. It provides a stable 2.8V output for powering microcontrollers, sensors, and RF modules. Other application areas include automotive electronics, telecommunications equipment, and industrial control systems, where low quiescent current and compact size are essential.

Equivalent

Equivalent products to the LP3981ILDX-2.8 include the LM1117-2.8, TPS78328, and TLV1117-2.8. These voltage regulators provide similar performance characteristics and output voltage of 2.8V, suitable for applications requiring low dropout voltage. Always verify specifications to ensure compatibility with your design.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

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