LP2981-33DBVR

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LP2981-33DBVR

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 LP2981-33DBVR is a low-dropout (LDO) linear voltage regulator from Texas Instruments. It is designed to provide a stable output voltage of 3.3V from a higher input voltage, making it ideal for battery-powered applications. The device features a low quiescent current and a dropout voltage of typically around 280mV at 100mA, enhancing efficiency in power-sensitive designs.
The LP2981-33DBVR comes in a small SOT-23-5 package, making it suitable for space-constrained applications. The regulator includes various protection features such as thermal shutdown and current limiting to enhance reliability. Additionally, it offers a shutdown mode, which reduces the current consumption to nearly zero, thereby extending battery life.
The device's low noise performance and high accuracy, with an output tolerance typically within ±1.5%, make it suitable for powering sensitive analog and digital circuits. With its compact size, efficient performance, and added protection features, the LP2981-33DBVR is widely used in portable electronics, sensors, and other low-power applications.

Features

The LP2981-33DBVR is a fixed-output voltage regulator designed for applications requiring low dropout and precise output voltage. Key features include:
1. Low Dropout Voltage: The regulator offers a low dropout voltage, typically around 280 mV at 100 mA load current, making it efficient for battery-powered devices.
2. Output Voltage: It provides a fixed output voltage of 3.3V with high accuracy.
3. Current Capability: It supports an output current of up to 100 mA.
4. Thermal Protection: Built-in thermal shutdown protection.
5. Short-Circuit Protection: Ensures device safety by preventing excessive current flow.
6. Low Quiescent Current: The device features low quiescent current, which is advantageous for battery-powered applications.
7. Package: Available in a small SOT-23-5 package, making it suitable for compact design requirements.
8. Applications: Ideal for use in portable and battery-powered electronics, sensor modules, and other low-power applications requiring reliable voltage regulation.
These attributes make the LP2981-33DBVR an optimal choice for applications needing stable voltage regulation with minimal power loss.

Package

The LP2981-33DBVR is a low-dropout (LDO) voltage regulator from Texas Instruments. It comes in a SOT-23-5 package, which is a small-outline transistor package suitable for applications requiring space-efficient solutions.

Pinout

The LP2981-33DBVR is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It is housed in a 5-pin SOT-23 package. The primary function of this device is to regulate input voltages to a stable 3.3V output, providing up to 100 mA of output current. Here is a concise description of its pin configuration:
1. VIN (Pin 1): Input voltage supply pin. It receives the voltage that needs to be regulated.
2. GND (Pin 2): Ground pin. It is connected to the system ground.
3. EN (Pin 3): Enable pin. This pin is used to enable or disable the voltage regulator. When it is driven high, the regulator is enabled, and when low, it places the regulator in a low-power shutdown mode.
4. NC (Pin 4): No connection. This pin may be used for mechanical support or may not be connected internally.
5. VOUT (Pin 5): Output voltage pin. This delivers the regulated 3.3V output to the load.
The LP2981-33DBVR features low quiescent current, excellent line and load transient response, and is designed for battery-operated devices.

Manufacturer

The LP2981-33DBVR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components. The company is well-known for its development of analog and embedded processing chips, which are used in various electronic applications, including consumer electronics, automotive systems, industrial equipment, and communications technology. Texas Instruments is recognized for its innovation and has a significant presence in the electronics industry.

Application

The LP2981-33DBVR is a low-dropout (LDO) voltage regulator used in applications requiring efficient power management. Key areas include battery-powered devices, portable electronics, and embedded systems, where stable voltage output is critical. It's also suitable for RF applications, microprocessor power supplies, and precision analog circuits due to its low noise and high accuracy. Its small footprint makes it ideal for space-constrained designs.

Equivalent

Equivalent products for the LP2981-33DBVR, which is a low dropout voltage regulator fixed at 3.3V, include:
1. AMS1117-3.3 by Advanced Monolithic Systems
2. LM1117-3.3 by Texas Instruments
3. MIC5205-3.3 by Microchip Technology
4. MCP1700-3302E by Microchip Technology
5. LD1117-3.3 by STMicroelectronics
These alternatives offer similar voltage regulation and output specifications, but always verify compatibility with your specific requirements.

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