Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Obsolete |
| OutputConfiguration | Positive |
| OutputType | Adjustable (Fixed) |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 30V |
| Voltage-Output(Min/Fixed) | 1.235V (5V) |
| Voltage-Output(Max) | 29V |
| 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) |
Tổng quan
Description
The LP2951CMX is a low-dropout (LDO) voltage regulator designed for applications requiring efficient voltage regulation with a low quiescent current, making it suitable for battery-powered devices. It offers a fixed output voltage with a typical accuracy of 1% or adjustable output using external resistors. The device is characterized by its low dropout voltage, typically around 380 mV at 100 mA load, allowing it to maintain regulation with minimal input-output voltage differential.
Key features include thermal and short-circuit protection, ensuring safe operation under various conditions. It also offers a shutdown function, reducing power consumption to nearly zero when not in use. The regulator comes in a space-saving surface-mount package, making it ideal for compact designs. Applications range from portable electronic devices to automotive and industrial systems where reliability and efficiency are crucial. The LP2951CMX is designed to operate over a wide input voltage range and is known for its stability with low ESR capacitors, providing designers with flexibility in component selection.
Key features include thermal and short-circuit protection, ensuring safe operation under various conditions. It also offers a shutdown function, reducing power consumption to nearly zero when not in use. The regulator comes in a space-saving surface-mount package, making it ideal for compact designs. Applications range from portable electronic devices to automotive and industrial systems where reliability and efficiency are crucial. The LP2951CMX is designed to operate over a wide input voltage range and is known for its stability with low ESR capacitors, providing designers with flexibility in component selection.
Equivalent
The LP2951CMX is a low-dropout voltage regulator. Equivalent products may include the LM2951, UA78M05, MC2951, and LT1121. These alternatives have similar specifications, such as output voltage, current output, and dropout voltage, but always verify the datasheet for specific parameters like pin configuration and thermal performance to ensure compatibility with your application.
Features
The LP2951CMX is a low-dropout voltage regulator with several key features:
1. Output Voltage: It typically provides a fixed output voltage with options such as 3.3V, 3V, or adjustable versions.
2. Low Dropout Voltage: The dropout voltage is approximately 0.4V at low current levels, making it suitable for battery-powered applications.
3. Output Current: It can deliver up to 100 mA of output current.
4. Supply Voltage Range: Operates over a wide input voltage range, usually from about 2V to 30V.
5. Precision Output: Offers a high level of output voltage accuracy and regulation.
6. Low Quiescent Current: Features a low quiescent current, typically less than 75 µA, which is ideal for energy-efficient designs.
7. Additional Features: Includes output voltage error flags, programmable low-voltage error detection, and the ability to enable/disable the regulator.
8. Protection: Built-in thermal and short-circuit protection enhances reliability and safety.
9. Packages: Available in surface-mount packages, such as SOIC-8, for space-constrained applications.
These features make the LP2951CMX suitable for use in portable devices, microcontroller systems, and other electronic applications requiring stable voltage regulation.
1. Output Voltage: It typically provides a fixed output voltage with options such as 3.3V, 3V, or adjustable versions.
2. Low Dropout Voltage: The dropout voltage is approximately 0.4V at low current levels, making it suitable for battery-powered applications.
3. Output Current: It can deliver up to 100 mA of output current.
4. Supply Voltage Range: Operates over a wide input voltage range, usually from about 2V to 30V.
5. Precision Output: Offers a high level of output voltage accuracy and regulation.
6. Low Quiescent Current: Features a low quiescent current, typically less than 75 µA, which is ideal for energy-efficient designs.
7. Additional Features: Includes output voltage error flags, programmable low-voltage error detection, and the ability to enable/disable the regulator.
8. Protection: Built-in thermal and short-circuit protection enhances reliability and safety.
9. Packages: Available in surface-mount packages, such as SOIC-8, for space-constrained applications.
These features make the LP2951CMX suitable for use in portable devices, microcontroller systems, and other electronic applications requiring stable voltage regulation.
Pinout
The LP2951CMX is a low-dropout voltage regulator typically used in applications requiring a regulated output voltage. It is an 8-pin device with the following pin functions:
1. Output (VOUT): Provides the regulated output voltage.
2. Feedback (FB): Allows setting the output voltage via an external resistor network.
3. Shutdown (SHDN): Enables or disables the voltage regulator; active-low.
4. Input (VIN): Connects to the input voltage source.
5. Ground (GND): Common ground connection for the device.
6. Error Output (ERROR): Indicates when the output voltage is out of regulation.
7. Bypass/Adjust: Used for adjusting the output voltage or as a noise reduction pin by connecting a capacitor.
8. Reference Voltage (VREF): Provides a reference voltage, often used in combination with the FB pin to set the output voltage.
These pins enable the LP2951CMX to function as a flexible voltage regulator suitable for various applications, offering features such as low dropout voltage, adjustable output, and power-saving shutdown mode.
1. Output (VOUT): Provides the regulated output voltage.
2. Feedback (FB): Allows setting the output voltage via an external resistor network.
3. Shutdown (SHDN): Enables or disables the voltage regulator; active-low.
4. Input (VIN): Connects to the input voltage source.
5. Ground (GND): Common ground connection for the device.
6. Error Output (ERROR): Indicates when the output voltage is out of regulation.
7. Bypass/Adjust: Used for adjusting the output voltage or as a noise reduction pin by connecting a capacitor.
8. Reference Voltage (VREF): Provides a reference voltage, often used in combination with the FB pin to set the output voltage.
These pins enable the LP2951CMX to function as a flexible voltage regulator suitable for various applications, offering features such as low dropout voltage, adjustable output, and power-saving shutdown mode.
Manufacturer
The LP2951CMX is a voltage regulator manufactured by Texas Instruments. Texas Instruments is a technology company known for designing and manufacturing semiconductors and various integrated circuits. They are one of the largest semiconductor companies globally and serve a wide range of industries, including automotive, industrial, consumer electronics, and communications.
Application
The LP2951CMX is a low-dropout voltage regulator primarily used in applications requiring efficient power management. Key areas include portable and battery-operated devices, such as smartphones, tablets, and wearable electronics, where it extends battery life by minimizing power consumption. It's also employed in automotive electronics for its ability to regulate voltage under varying conditions, ensuring reliable performance. Additionally, it's used in industrial and communication equipment, where stable voltage supply is crucial. Its features, like low quiescent current and thermal protection, make it suitable for applications involving precision analog circuits, microprocessor power supplies, and sensor networks.
Package
The LP2951CMX is a low-dropout voltage regulator typically available in a surface-mount package. It is often provided in an 8-pin SOIC (Small Outline Integrated Circuit) package type, suitable for various compact and space-constrained applications.
