LP2981A-33DBVR

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LP2981A-33DBVR

IC REG LINEAR 3.3V 100MA SOT23-5

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사양

Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
OutputConfiguration Positive
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) 16V
Voltage-Output(Min/Fixed) 3.3V
VoltageDropout(Max) 0.37V @ 100mA
Current-Output 100mA
Current-Quiescent(Iq) 95 µA
Current-Supply(Max) 1.7 mA
PSRR 63dB (1kHz)
ControlFeatures Enable
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case SC-74A, SOT-753

개요

Description

The LP2981A-33DBVR is a low-dropout (LDO) linear voltage regulator from Texas Instruments. It is designed to provide a stable 3.3V output voltage for various electronic applications, particularly where space efficiency and low power consumption are critical. It supports an input voltage range from 2.1V to 16V and can deliver up to 100 mA of output current. The regulator features low dropout voltage, typically around 200 mV at 100 mA load, which allows it to be used efficiently with battery-operated devices.
Key features of the LP2981A-33DBVR include low quiescent current (typically 30 µA), high accuracy output voltage (within ±1.5% across load, line, and temperature), and a thermal shutdown feature for over-temperature protection. The device also offers a fast transient response for load changes, enhancing its reliability in dynamic environments. It comes in a SOT-23-5 package, making it suitable for compact circuit boards. This regulator is ideal for applications like portable electronics, wireless communication devices, and any system requiring efficient voltage regulation.

Features

The LP2981A-33DBVR is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage with low input voltage differential. Key features include:
1. Output Voltage: Fixed at 3.3V with high accuracy.
2. Dropout Voltage: Very low, typically around 200 mV at 100 mA load, making it efficient for battery-powered applications.
3. Output Current: Capable of delivering up to 100 mA.
4. Quiescent Current: Extremely low, typically 30 μA, conserving battery life in portable devices.
5. Input Voltage Range: From 2.1V to 16V, offering flexibility for various input conditions.
6. Stability: Requires only a small ceramic capacitor on the output for stability.
7. Protection: Built-in current limiting and thermal overload protection enhance reliability and safety.
8. Package: Available in a compact SOT-23-5 package, ideal for space-constrained applications.
9. Temperature Range: Operates over a wide temperature range from -40°C to +125°C, suitable for industrial environments.
10. Applications: Perfect for battery-powered devices, handheld electronics, and any application requiring efficient voltage regulation.
These features make the LP2981A-33DBVR a robust choice for efficiently regulating voltage in compact and power-sensitive applications.

Package

The LP2981A-33DBVR is a low-dropout (LDO) linear voltage regulator packaged in a SOT-23-5 (Small Outline Transistor) package. This package type is compact, making it suitable for space-constrained applications, providing easy integration into circuit boards with its small footprint and leads for surface-mount technology (SMT).

Pinout

The LP2981A-33DBVR is a low-dropout (LDO) voltage regulator. It is housed in a small SOT-23-5 package, which means it has 5 pins. Here is a brief overview of its pin functions:
1. Pin 1 (IN): The input voltage pin where the unregulated voltage is supplied.
2. Pin 2 (GND): Ground pin, used for the return path of the current.
3. Pin 3 (EN): Enable pin, which allows the LDO to be turned on or off. A high voltage enables the regulator, while a low voltage disables it.
4. Pin 4 (BYPASS): This pin is used to connect an external capacitor for noise reduction, which helps in achieving a lower output noise.
5. Pin 5 (OUT): The output pin where the regulated voltage is provided. The "33" in LP2981A-33DBVR indicates a fixed output voltage of 3.3 volts.
This LDO regulator is particularly useful for battery-powered devices due to its low quiescent current and low dropout voltage, ensuring efficient power management.

Manufacturer

The LP2981A-33DBVR is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and integrated circuits. It is well-known for its analog chips and embedded processors, which are used in various industries including automotive, industrial, personal electronics, and communications equipment.

Application

The LP2981A-33DBVR is a low-dropout (LDO) voltage regulator commonly used in applications requiring low noise and stable voltage outputs. Key application areas include portable devices, battery-powered equipment, and consumer electronics. It's ideal for supplying power to microcontrollers, sensors, and RF modules due to its efficiency and low quiescent current.

Equivalent

The LP2981A-33DBVR is a low-dropout linear voltage regulator. Equivalent products include:
1. MIC5205-3.3YM5 from Microchip Technology
2. MCP1700T-3302E/TT from Microchip Technology
3. TLV70433DBVR from Texas Instruments
4. NCP5500-D from ON Semiconductor
5. LD1117S33TR from STMicroelectronics
These alternatives match similar specifications in terms of output voltage, dropout voltage, and package type. Always verify the full datasheet specifications to ensure compatibility.

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