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LM2991SX
+BOMIC REG LINEAR NEG ADJ 1A DDPAK
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Nhà sản xuấtBán dẫn quốc gia
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Ông. Phần #LM2991SX
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Bảng dữ liệu LM2991SX DataSheet
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Gói TO-263 (KTT)-5
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Có sẵn4339
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Bulk |
| ProductStatus | Active |
| OutputConfiguration | Negative |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | -26V |
| Voltage-Output(Min/Fixed) | -3V |
| Voltage-Output(Max) | -24V |
| VoltageDropout(Max) | 1V @ 1A |
| Current-Output | 1A |
| Current-Quiescent(Iq) | 0.7 mA |
| Current-Supply(Max) | 5 mA |
| PSRR | 60dB (1kHz) |
| ControlFeatures | Enable |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA |
Tổng quan
Description
The LM2991SX is a low-dropout adjustable negative voltage regulator designed by Texas Instruments. It offers an output voltage range from -3V to -24V, making it suitable for various applications requiring negative voltage regulation. The device can deliver up to 1.5A of output current, and its low dropout voltage of 0.6V (at 1A load current) enhances efficiency, especially in battery-operated systems.
Key features include a wide input voltage range from -26V to -3V, adjustable output voltage, and a low quiescent current, which reduces power consumption in applications where efficiency is crucial. The LM2991SX also includes built-in protection features such as current limiting, thermal shutdown, and safe operating area (SOA) protection, ensuring reliability and safeguarding the device against potential damage from over-current or overheating conditions.
The LM2991SX comes in a TO-263 surface-mount package, which facilitates easy integration into compact designs. Overall, this voltage regulator is suitable for use in telecommunications, industrial, and automotive applications requiring stable and efficient negative voltage regulation.
Key features include a wide input voltage range from -26V to -3V, adjustable output voltage, and a low quiescent current, which reduces power consumption in applications where efficiency is crucial. The LM2991SX also includes built-in protection features such as current limiting, thermal shutdown, and safe operating area (SOA) protection, ensuring reliability and safeguarding the device against potential damage from over-current or overheating conditions.
The LM2991SX comes in a TO-263 surface-mount package, which facilitates easy integration into compact designs. Overall, this voltage regulator is suitable for use in telecommunications, industrial, and automotive applications requiring stable and efficient negative voltage regulation.
Equivalent
The LM2991SX is a low-dropout adjustable negative voltage regulator. Equivalent products include:
1. LT1964 - Negative LDO regulator from Analog Devices.
2. NCP560 - Negative LDO from ON Semiconductor.
3. MIC79110 - Negative LDO from Microchip Technology.
4. MC7912 - Negative voltage regulator from ON Semiconductor.
Ensure compatibility with your specific requirements, as specifications may vary.
1. LT1964 - Negative LDO regulator from Analog Devices.
2. NCP560 - Negative LDO from ON Semiconductor.
3. MIC79110 - Negative LDO from Microchip Technology.
4. MC7912 - Negative voltage regulator from ON Semiconductor.
Ensure compatibility with your specific requirements, as specifications may vary.
Features
The LM2991SX is a low dropout adjustable negative voltage regulator. It provides a range of features that make it suitable for various applications:
1. Output Voltage Range: Adjustable from -3V to -24V.
2. Output Current: Can deliver up to 1.5A.
3. Low Dropout Voltage: Typically 0.6V at 1A output current, improving efficiency and allowing for use in low-voltage applications.
4. Wide Input Voltage Range: Operates with input voltages up to -26V.
5. Protection Features: Includes current limiting and thermal shutdown to prevent damage under fault conditions.
6. Remote Sensing: Capable of remote output voltage sensing to compensate for voltage drops in the wiring.
7. Reverse Polarity Input Voltage Protection: Tolerates reverse polarity inputs without damage.
8. Thermal Regulation: Maintains output voltage regulation even during temperature variations.
These features make the LM2991SX suitable for use in various electronic applications where a stable negative voltage supply is required.
1. Output Voltage Range: Adjustable from -3V to -24V.
2. Output Current: Can deliver up to 1.5A.
3. Low Dropout Voltage: Typically 0.6V at 1A output current, improving efficiency and allowing for use in low-voltage applications.
4. Wide Input Voltage Range: Operates with input voltages up to -26V.
5. Protection Features: Includes current limiting and thermal shutdown to prevent damage under fault conditions.
6. Remote Sensing: Capable of remote output voltage sensing to compensate for voltage drops in the wiring.
7. Reverse Polarity Input Voltage Protection: Tolerates reverse polarity inputs without damage.
8. Thermal Regulation: Maintains output voltage regulation even during temperature variations.
These features make the LM2991SX suitable for use in various electronic applications where a stable negative voltage supply is required.
Pinout
The LM2991SX is a low dropout adjustable negative voltage regulator. It is typically housed in a surface-mount TO-263 package, featuring a 5-pin configuration. Here's a brief overview of the pin functions:
1. Vin (Pin 1): Input voltage. This pin receives the negative input voltage that you want to regulate.
2. GND (Pin 2): Ground. This pin is connected to the system ground.
3. Vout (Pin 3): Output voltage. This pin provides the regulated negative output voltage.
4. Adj (Pin 4): Adjustment. This pin is used to set the output voltage through an external resistor divider network.
5. NC (Pin 5): No Connection. This pin is not connected internally and is used for mechanical stability.
The LM2991SX is typically used in applications requiring a stable negative voltage with low dropout, featuring a wide input range and the ability to supply up to 1.5A of output current. It is commonly utilized in power management for electronic devices.
1. Vin (Pin 1): Input voltage. This pin receives the negative input voltage that you want to regulate.
2. GND (Pin 2): Ground. This pin is connected to the system ground.
3. Vout (Pin 3): Output voltage. This pin provides the regulated negative output voltage.
4. Adj (Pin 4): Adjustment. This pin is used to set the output voltage through an external resistor divider network.
5. NC (Pin 5): No Connection. This pin is not connected internally and is used for mechanical stability.
The LM2991SX is typically used in applications requiring a stable negative voltage with low dropout, featuring a wide input range and the ability to supply up to 1.5A of output current. It is commonly utilized in power management for electronic devices.
Manufacturer
The LM2991SX is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and manufactures a wide range of analog and embedded processing chips. TI's products are used in various electronic applications and industries, including automotive, industrial, consumer electronics, and communications equipment. The company is well-known for its innovation in the semiconductor sector and provides solutions that enhance the efficiency and performance of electronic devices.
Application
The LM2991SX is a low dropout adjustable voltage regulator designed for applications requiring a negative output voltage. Its primary application areas include powering operational amplifiers, analog circuits, and other systems requiring a stable negative voltage supply. It is useful in battery-powered devices due to its low quiescent current and dropout voltage. Other applications include telecommunications equipment, automotive electronics, and industrial control systems where precise negative voltage regulation is needed. The component's features, such as current limiting and thermal shutdown, make it suitable for environments where reliability and protection are critical.
Package
The LM2991SX is a low dropout adjustable negative voltage regulator packaged in a TO-263 surface-mount package, also known as D²PAK. This package is designed to provide efficient heat dissipation and is suitable for applications requiring compact size and reliable thermal performance.
