Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Adjustable (Fixed) |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 30V |
| Voltage-Output(Min/Fixed) | 1.235V (5V) |
| Voltage-Output(Max) | 30V |
| VoltageDropout(Max) | 0.45V @ 100mA |
| Current-Output | 100mA |
| Current-Quiescent(Iq) | 120 µA |
| Current-Supply(Max) | 12 mA |
| ProtectionFeatures | Over Current, Over Temperature |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The LP2951CDR2G is a low dropout voltage regulator designed for efficient power regulation in electronic circuits. Manufactured by ON Semiconductor, it is part of the LP2951 series known for delivering stable output voltage with minimal input-output differential. The device provides a fixed output voltage (commonly 5V, 3.3V, etc.) but can also be adjusted using external resistors for customizable applications.
Key features include low quiescent current, thermal shutdown, and short-circuit protection, making it suitable for battery-powered and low-power applications. The LP2951CDR2G typically comes in a small SOIC-8 package, which aids in compact PCB designs. It can source up to 100 mA of output current and operates over a wide range of input voltages.
Its low dropout performance ensures efficiency in scenarios where input and output voltages are close, reducing power loss. Common applications include microcontroller power supplies, portable devices, and any electronic systems requiring reliable voltage regulation with minimal power consumption.
Key features include low quiescent current, thermal shutdown, and short-circuit protection, making it suitable for battery-powered and low-power applications. The LP2951CDR2G typically comes in a small SOIC-8 package, which aids in compact PCB designs. It can source up to 100 mA of output current and operates over a wide range of input voltages.
Its low dropout performance ensures efficiency in scenarios where input and output voltages are close, reducing power loss. Common applications include microcontroller power supplies, portable devices, and any electronic systems requiring reliable voltage regulation with minimal power consumption.
Equivalent
Equivalent products to the LP2951CDR2G, a low-dropout voltage regulator, include:
1. LM2951 series by Texas Instruments
2. MCP1700 series by Microchip Technology
3. MIC5205 series by Microchip Technology
4. LD1117 series by STMicroelectronics
5. NCP2951 series by ON Semiconductor
These alternatives offer similar functionality with slight variations in package type, voltage, and current specifications. Always check the datasheet for compatibility with your specific application.
1. LM2951 series by Texas Instruments
2. MCP1700 series by Microchip Technology
3. MIC5205 series by Microchip Technology
4. LD1117 series by STMicroelectronics
5. NCP2951 series by ON Semiconductor
These alternatives offer similar functionality with slight variations in package type, voltage, and current specifications. Always check the datasheet for compatibility with your specific application.
Features
The LP2951CDR2G is a low dropout (LDO) voltage regulator known for its high accuracy and low quiescent current. It offers an output voltage range of 1.235V to 29V, adjustable with external resistors, and can deliver up to 100 mA of current. Key features include:
1. Low Dropout Voltage: Ensures efficient performance with a dropout voltage typically around 0.4V at 100 mA.
2. High Accuracy: Provides a precise output voltage with tight regulation, boasting a tolerance as low as ±0.5%.
3. Low Quiescent Current: Consumes minimal current under no-load conditions, making it ideal for battery-powered applications.
4. Internal Current Limiting and Thermal Shutdown: Protects the device and connected circuitry from overcurrent and overheating.
5. Error Flag Output: Alerts the system when the output voltage falls out of regulation.
6. Shutdown Input: Allows the regulator to be turned off, reducing power consumption.
7. Compact Package: Often available in small packages like SOIC-8, suitable for space-constrained applications.
These features make the LP2951CDR2G particularly suitable for portable devices, microcontroller power supplies, and other applications requiring efficient voltage regulation.
1. Low Dropout Voltage: Ensures efficient performance with a dropout voltage typically around 0.4V at 100 mA.
2. High Accuracy: Provides a precise output voltage with tight regulation, boasting a tolerance as low as ±0.5%.
3. Low Quiescent Current: Consumes minimal current under no-load conditions, making it ideal for battery-powered applications.
4. Internal Current Limiting and Thermal Shutdown: Protects the device and connected circuitry from overcurrent and overheating.
5. Error Flag Output: Alerts the system when the output voltage falls out of regulation.
6. Shutdown Input: Allows the regulator to be turned off, reducing power consumption.
7. Compact Package: Often available in small packages like SOIC-8, suitable for space-constrained applications.
These features make the LP2951CDR2G particularly suitable for portable devices, microcontroller power supplies, and other applications requiring efficient voltage regulation.
Pinout
The LP2951CDR2G is a low-dropout voltage regulator IC manufactured by ON Semiconductor. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here’s a brief overview of its pin functions:
1. VOUT: Output voltage pin where the regulated voltage is available.
2. GND: Ground pin, the reference point for the regulator.
3. VIN: Input voltage pin where the unregulated input voltage is applied.
4. SHUTDOWN: A pin used to enable or disable the regulator. Logic high turns the regulator off.
5. FEEDBACK: Used to set the output voltage when external resistors are employed.
6. BYPASS: Allows for connecting an external capacitor to improve noise performance.
7. ERROR: Provides an error flag output indicating if the output voltage is out of regulation.
8. N/C (No Connection): This pin may not be connected internally and is not used in operation.
The LP2951 is designed for precision low-output current and low-dropout voltage applications, providing features such as error detection, shutdown capability, and adjustable output voltage for various applications.
1. VOUT: Output voltage pin where the regulated voltage is available.
2. GND: Ground pin, the reference point for the regulator.
3. VIN: Input voltage pin where the unregulated input voltage is applied.
4. SHUTDOWN: A pin used to enable or disable the regulator. Logic high turns the regulator off.
5. FEEDBACK: Used to set the output voltage when external resistors are employed.
6. BYPASS: Allows for connecting an external capacitor to improve noise performance.
7. ERROR: Provides an error flag output indicating if the output voltage is out of regulation.
8. N/C (No Connection): This pin may not be connected internally and is not used in operation.
The LP2951 is designed for precision low-output current and low-dropout voltage applications, providing features such as error detection, shutdown capability, and adjustable output voltage for various applications.
Manufacturer
The LP2951CDR2G is manufactured by ON Semiconductor. ON Semiconductor is a global company that designs, manufactures, and supplies a broad range of semiconductor components, including power and signal management, logic, discrete, and custom devices. The company serves a variety of markets, including automotive, industrial, cloud power, Internet of Things (IoT), and communications infrastructure. Known for its focus on energy-efficient innovations, ON Semiconductor provides solutions that enable energy-efficient electronics and help reduce global energy use.
Application
The LP2951CDR2G is a low-dropout voltage regulator commonly used in various applications due to its efficiency and versatility. Key application areas include:
1. Battery-Powered Devices: It provides stable voltage regulation, extending battery life in portable electronics.
2. Microcontroller Systems: Offers reliable power supply for microcontrollers, ensuring consistent performance.
3. Consumer Electronics: Used in devices like smartphones and tablets for power management.
4. Industrial Equipment: Provides regulated power in harsh environments, helping maintain reliability.
5. Automotive Systems: Suitable for automotive applications due to its robustness and low dropout voltage.
6. Telecommunications: Ensures stable power for communication devices and systems.
These application areas benefit from the LP2951CDR2G's low quiescent current and precision output.
1. Battery-Powered Devices: It provides stable voltage regulation, extending battery life in portable electronics.
2. Microcontroller Systems: Offers reliable power supply for microcontrollers, ensuring consistent performance.
3. Consumer Electronics: Used in devices like smartphones and tablets for power management.
4. Industrial Equipment: Provides regulated power in harsh environments, helping maintain reliability.
5. Automotive Systems: Suitable for automotive applications due to its robustness and low dropout voltage.
6. Telecommunications: Ensures stable power for communication devices and systems.
These application areas benefit from the LP2951CDR2G's low quiescent current and precision output.
Package
The LP2951CDR2G is a low-dropout voltage regulator offered in a SOIC-8 (Small Outline Integrated Circuit) package type.
