LP2951-33DR

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LP2951-33DR

IC REG LIN POS ADJ 100MA 8SOIC

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputConfiguration Positive
OutputType Adjustable (Fixed)
NumberofRegulators 1
Voltage-Input(Max) 30V
Voltage-Output(Min/Fixed) 1.235V (3.3V)
Voltage-Output(Max) 30V
VoltageDropout(Max) 0.6V @ 100mA
Current-Output 100mA
Current-Quiescent(Iq) 120 µA
Current-Supply(Max) 14 mA
ControlFeatures Enable
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

概述

Description

The LP2951-33DR is a low-dropout (LDO) voltage regulator designed to provide a stable 3.3V output from a higher input voltage source. It is part of the LP2951 series, known for its precision and low power consumption. The "33" in the part number indicates the 3.3V output, while "DR" refers to the package type, typically a SOIC (Small Outline Integrated Circuit) package.
Key features include a low dropout voltage of around 310 mV at full load, making it efficient in battery-powered applications. It also has a high accuracy output, typically within ±1.5%, and a low quiescent current, which helps conserve battery life. Additional capabilities include short-circuit protection, thermal shutdown, and adjustable output voltage (via external resistors) for more versatile applications.
The LP2951-33DR is commonly used in applications requiring a regulated 3.3V output, such as microcontrollers, sensors, and communication devices, due to its reliability and efficiency. Its versatility and robust feature set make it suitable for various portable and fixed electronics.

Features

The LP2951-33DR is a low-dropout voltage regulator designed for applications requiring efficient power regulation with a fixed output voltage of 3.3V. Key features include:
1. Low Dropout Voltage: Typically around 0.5V at full load, which allows for efficient operation close to the output voltage.
2. Output Current: Capable of delivering up to 100mA, making it suitable for a variety of low-power applications.
3. Precision Output: Offers high accuracy with output voltage tolerance typically within ±0.5%.
4. Low Quiescent Current: Consumes minimal current during operation, approximately 75µA, which is ideal for battery-powered devices.
5. Thermal and Short-Circuit Protection: Features built-in mechanisms to protect against overheating and short circuits, enhancing reliability.
6. Adjustable Output Option: Provides flexibility with a voltage range that can be adjusted as needed.
7. Error Flag: Includes an error flag to indicate when the output voltage is out of regulation, providing diagnostic capabilities.
8. Small Package Size: Available in surface-mount packages which facilitate compact PCB designs.
These features make the LP2951-33DR suitable for a variety of applications, particularly where space and power efficiency are critical.

Package

The LP2951-33DR is a low-dropout voltage regulator available in a SOIC-8 (Small Outline Integrated Circuit) package.

Pinout

The LP2951-33DR is a low-dropout voltage regulator from Texas Instruments. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. The primary function of the LP2951-33DR is to provide a regulated 3.3V output voltage from a higher input voltage, with a low dropout voltage, making it suitable for applications requiring efficient power management.
Here is a brief description of its pins:
1. VOUT (Pin 1): Output voltage.
2. GND (Pin 2): Ground connection.
3. Feedback (Pin 3): Used for adjusting output voltage; tied to VOUT for fixed 3.3V output.
4. Shutdown (Pin 4): Disables the regulator to reduce power consumption.
5. VIN (Pin 5): Input voltage.
6. Error Output (Pin 6): Indicates output is out of regulation.
7. N/C (Pin 7): No connection; may be used for additional features in other versions.
8. Sense (Pin 8): Improves load regulation by sensing output voltage directly at the load.
The LP2951-33DR is suitable for battery-powered applications where space is limited, offering features like low quiescent current and thermal shutdown protection.

Manufacturer

The LP2951-33DR is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and manufactures analog and embedded processing chips. They provide a wide range of electronic components used in various applications, including consumer electronics, automotive, industrial, and communications equipment. Texas Instruments is known for its innovation and extensive product portfolio in the semiconductor industry.

Application

The LP2951-33DR is a low-dropout voltage regulator commonly used in applications requiring efficient power management. Key application areas include battery-powered devices, portable electronics, microcontroller power supplies, sensor modules, and any systems needing precise voltage regulation with low quiescent current. Its features make it suitable for use in consumer electronics, communication equipment, and industrial automation systems.

Equivalent

The LP2951-33DR is a low-dropout (LDO) voltage regulator. Equivalent products include:
1. LM2936 series (National Semiconductor/Texas Instruments)
2. MIC5205 (Microchip Technology)
3. MCP1703 series (Microchip Technology)
4. LT1121 series (Analog Devices)
5. XC6206 series (Torex Semiconductor)
6. TS2951 (Taiwan Semiconductor)
These alternatives offer similar functionality and voltage regulation capabilities. Always check the datasheets to ensure compatibility with your specific application requirements.

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