LP2951CN

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LP2951CN

IC REG LIN POS ADJ 100MA 8-PDIP

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規格

Part Status Obsolete
Output Configuration Positive
Output Type Adjustable (Fixed)
Number of Regulators 1
Voltage - Input (Max) 30V
Voltage - Output (Min/Fixed) 1.235V (5V)
Voltage - Output (Max) 29V
Voltage Dropout (Max) 0.6V @ 100mA
Current - Output 100mA
Current - Quiescent (Iq) 120 µA
Current - Supply (Max) 14 mA
Control Features Enable
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Supplier Device Package 8-PDIP
Base Product Number LP2951

概述

Description

The LP2951CN is a low-dropout (LDO) linear voltage regulator designed to provide a stable output voltage with minimal voltage drop from input to output. It is particularly suited for applications requiring low power consumption and efficient regulation. The device can deliver output currents up to 1A and offers a wide input voltage range from 2.5V to 30V, making it versatile for various applications.
Key features include a low dropout voltage (typically 0.4V at 1A), excellent line and load regulation, and thermal shutdown protection. The LP2951CN also integrates a built-in error amplifier and is available in multiple fixed output voltage options (such as 3.3V and 5V) as well as an adjustable version.
This regulator is commonly used in battery-powered devices, communication equipment, and microcontroller applications. Its compact design and reliability make it a popular choice among engineers for powering sensitive electronic circuits.

Features

The LP2951CN is a low-dropout linear voltage regulator designed for various applications. Key features include:
1. Output Voltage: Adjustable output voltage ranging from 1.24V to 29V.
2. Low Dropout Voltage: Typically 40mV at light loads and 300mV at 1A, allowing efficient operation with minimal input-output voltage differential.
3. High Output Current: Capable of delivering up to 1A of output current.
4. Low Quiescent Current: Operates with low quiescent current, enhancing efficiency in battery-powered devices.
5. Thermal Shutdown: Integrated thermal shutdown protection to prevent overheating.
6. Short-Circuit Protection: Provides short-circuit protection for reliability.
7. Low Noise: Features low output noise, beneficial for sensitive applications.
8. Wide Operating Temperature Range: Functions effectively in a temperature range of -40°C to +125°C.
9. Compact Package: Available in a TO-220 package for easy integration into designs.
These features make the LP2951CN suitable for a range of applications, including portable devices, embedded systems, and power management solutions.

Package

The LP2951CN is typically packaged in a 5-pin TO-220 package. This type of package provides good heat dissipation and is suitable for applications requiring voltage regulation in power supply circuits.

Pinout

The LP2951CN is a low-dropout (LDO) voltage regulator with a pin count of 8. Its pin functions are as follows:
1. Vin (Pin 1): Input voltage supply.
2. GND (Pin 2): Ground reference.
3. Vout (Pin 3): Regulated output voltage.
4. Adjust (Pin 4): Used for setting the output voltage; connects to a voltage divider or can be left open for fixed output.
5. Bypass (Pin 5): Connects a capacitor to improve transient response (optional).
6. Error (Pin 6): Output error flag; indicates if the output is out of regulation.
7. NC (Pin 7): No connection; not internally connected.
8. SO-8 (Pin 8): This is typically a thermal pad or additional ground pin in specific packages.
The LP2951CN is designed to provide a stable output voltage with low dropout and is commonly used in power management applications.

Manufacturer

The LP2951CN is manufactured by Texas Instruments (TI), a major American technology company. Founded in 1951, Texas Instruments specializes in designing and producing semiconductors and various integrated circuits, which are essential components in a wide range of electronic devices. TI is well-known for its innovations in analog and embedded processing solutions, serving diverse industries such as automotive, industrial, communications, and consumer electronics. The LP2951CN is a low-dropout voltage regulator, widely used in electronic applications for its reliability and efficiency.

Application

The LP2951CN is a low-dropout (LDO) voltage regulator commonly used in various applications, including microcontroller power supplies, battery-operated devices, portable electronics, and automotive systems. It provides a stable output voltage with low quiescent current, making it suitable for powering sensitive electronic circuits, telecommunications equipment, and point-of-load regulation in systems requiring low noise and high accuracy.

Equivalent

Equivalent products to the LP2951CN include the LM1084, LM317, MIC2940, and LT1084. These regulators offer similar voltage regulation capabilities and features such as low dropout voltage and adjustable output. Always verify specific requirements like output voltage, current rating, and package type to ensure compatibility.

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