Спецификации
| Атрибут | Ценность |
| 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 (5V) |
| 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) |
Обзор
Description
The LP2951-50DR is a low-dropout (LDO) voltage regulator, designed to provide a stable 5V output from a higher voltage input source with minimal voltage drop. This device is part of the LP2951 series, which is known for its precision and efficiency. It is typically used in battery-powered and portable devices due to its low quiescent current and ability to maintain regulation with input voltages that are only slightly higher than the output voltage.
Key features include a 5V fixed output, low dropout voltage, and a range of built-in protections like short-circuit current limiting and thermal overload protection. The LP2951-50DR also offers error flag indications, which can signal an out-of-regulation condition, and a shutdown pin to reduce power consumption when the regulator is not in use.
Packaged in a surface-mount SOIC-8 (Small Outline Integrated Circuit) format, the LP2951-50DR is suitable for compact circuit designs. Its reliable performance makes it an excellent choice for applications requiring precise voltage regulation, such as microcontrollers and sensitive electronic components.
Key features include a 5V fixed output, low dropout voltage, and a range of built-in protections like short-circuit current limiting and thermal overload protection. The LP2951-50DR also offers error flag indications, which can signal an out-of-regulation condition, and a shutdown pin to reduce power consumption when the regulator is not in use.
Packaged in a surface-mount SOIC-8 (Small Outline Integrated Circuit) format, the LP2951-50DR is suitable for compact circuit designs. Its reliable performance makes it an excellent choice for applications requiring precise voltage regulation, such as microcontrollers and sensitive electronic components.
Equivalent
The LP2951-50DR is a low-dropout voltage regulator. Equivalent products include:
1. MIC5205-5.0 by Microchip Technology
2. MCP1700T-5002 by Microchip Technology
3. LM2936-5.0 by Texas Instruments
4. LD1117S50 by STMicroelectronics
5. REG1117-5 by Texas Instruments
These alternatives offer similar voltage regulation capabilities, but always check the datasheets for compatibility with your specific requirements.
1. MIC5205-5.0 by Microchip Technology
2. MCP1700T-5002 by Microchip Technology
3. LM2936-5.0 by Texas Instruments
4. LD1117S50 by STMicroelectronics
5. REG1117-5 by Texas Instruments
These alternatives offer similar voltage regulation capabilities, but always check the datasheets for compatibility with your specific requirements.
Features
The LP2951-50DR is a voltage regulator known for its precision, low dropout, and low quiescent current, which makes it ideal for battery-powered applications. Key features include:
1. Output Voltage: Provides a fixed 5.0V output voltage.
2. Low Dropout Voltage: Features a dropout voltage of approximately 380mV at 100mA load.
3. Quiescent Current: Very low quiescent current of about 75µA, which helps in extending battery life.
4. Accuracy: High output voltage accuracy, typically around ±0.5%.
5. Current Limitation: Built-in current limiting and thermal shutdown features for protection against overloads.
6. Shutdown Capability: Includes an active-low shutdown feature to enable easy on/off control.
7. Temperature Range: Operates effectively over a wide temperature range from -40°C to 125°C.
8. Package Type: Available in an 8-pin SOIC package which provides ease of use in compact designs.
9. Additional Features: It contains features like error flag output for indicating out-of-regulation conditions.
These attributes make the LP2951-50DR suitable for a variety of applications requiring efficient power regulation.
1. Output Voltage: Provides a fixed 5.0V output voltage.
2. Low Dropout Voltage: Features a dropout voltage of approximately 380mV at 100mA load.
3. Quiescent Current: Very low quiescent current of about 75µA, which helps in extending battery life.
4. Accuracy: High output voltage accuracy, typically around ±0.5%.
5. Current Limitation: Built-in current limiting and thermal shutdown features for protection against overloads.
6. Shutdown Capability: Includes an active-low shutdown feature to enable easy on/off control.
7. Temperature Range: Operates effectively over a wide temperature range from -40°C to 125°C.
8. Package Type: Available in an 8-pin SOIC package which provides ease of use in compact designs.
9. Additional Features: It contains features like error flag output for indicating out-of-regulation conditions.
These attributes make the LP2951-50DR suitable for a variety of applications requiring efficient power regulation.
Pinout
The LP2951-50DR is a low-dropout voltage regulator, commonly used for maintaining a stable output voltage. It is part of the LP2951 series, which typically comes in an 8-pin configuration. The LP2951-50DR specifically provides a fixed output voltage of 5.0 volts.
The pin functions for the LP2951-50DR are generally as follows:
1. VOUT: Output voltage pin providing the regulated voltage.
2. GND: Ground pin.
3. VIN: Input voltage pin where the unregulated input is supplied.
4. Feedback (FB): Used for setting the output voltage and connected to the output in fixed voltage versions.
5. Shutdown (SHDN): Enables or disables the regulator.
6. Error Output (ERROR): Indicates a fault condition when the output voltage is out of regulation.
7. Bypass (BP): For noise reduction, optionally connected to an external capacitor.
8. Drive (DRV): Typically used for external pass transistor drive in some configurations.
Please verify with the official datasheet or documentation for specific details, as pin assignments and functions can vary slightly based on the manufacturer and package type.
The pin functions for the LP2951-50DR are generally as follows:
1. VOUT: Output voltage pin providing the regulated voltage.
2. GND: Ground pin.
3. VIN: Input voltage pin where the unregulated input is supplied.
4. Feedback (FB): Used for setting the output voltage and connected to the output in fixed voltage versions.
5. Shutdown (SHDN): Enables or disables the regulator.
6. Error Output (ERROR): Indicates a fault condition when the output voltage is out of regulation.
7. Bypass (BP): For noise reduction, optionally connected to an external capacitor.
8. Drive (DRV): Typically used for external pass transistor drive in some configurations.
Please verify with the official datasheet or documentation for specific details, as pin assignments and functions can vary slightly based on the manufacturer and package type.
Manufacturer
The LP2951-50DR is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. TI is one of the top 10 semiconductor companies worldwide, and its products are used in a wide array of applications, including industrial, automotive, personal electronics, communications, and enterprise systems. The company is known for its innovation in analog and embedded processing products.
Application
The LP2951-50DR is a low-dropout voltage regulator commonly used in battery-powered devices due to its high efficiency and low quiescent current. Its application areas include:
1. Portable Electronics: Provides stable voltage supply for devices like smartphones, tablets, and wearables.
2. Telecommunications: Used in modems and communication devices for voltage regulation.
3. Medical Devices: Powers sensitive electronics in portable medical equipment.
4. Automotive Systems: Ideal for dashboard electronics and infotainment systems.
5. Industrial Automation: Ensures reliable operation of sensors and control units.
Its precision output and thermal protection make it suitable for applications requiring stable power under varying conditions.
1. Portable Electronics: Provides stable voltage supply for devices like smartphones, tablets, and wearables.
2. Telecommunications: Used in modems and communication devices for voltage regulation.
3. Medical Devices: Powers sensitive electronics in portable medical equipment.
4. Automotive Systems: Ideal for dashboard electronics and infotainment systems.
5. Industrial Automation: Ensures reliable operation of sensors and control units.
Its precision output and thermal protection make it suitable for applications requiring stable power under varying conditions.
Package
The LP2951-50DR is a low-dropout (LDO) voltage regulator from Texas Instruments, packaged in a surface-mount SOIC-8 (Small Outline Integrated Circuit) package.
