LM337T/NOPB
The negative electrode of LM337T/NOPB can handle input voltages of up to 40V, making it versatile for various circuit designsLM337T/NOPB
The negative electrode of LM337T/NOPB can handle input voltages of up to 40V, making it versatile for various circuit designs
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製造商零件號 # : LM337T/NOPB
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包裝/封裝: TO220-3
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製造商: Texas Instruments
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產品分類 : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
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LM337T/NOPB 數據表
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詳細說明
The LM337T/NOPB is a versatile adjustable 3-terminal negative voltage regulator that can supply currents of -1.5 A or more across a wide output voltage range of -1.25 V to -37 V. With just two external resistors and one output capacitor, you can easily set the output voltage and ensure stable operation. Its circuit design has been carefully optimized for excellent regulation and minimal thermal transients, guaranteeing reliable performance in various applications
主要特徵
- High Accuracy
- Fault Tolerant
- Wide Operating Range
規格
以下是所選零件的基本參數,涉及零件的特性及其所屬類別。
Output options | Adjustable Output | Iout (max) (A) | 1.5 |
Vin (max) (V) | -4.2 | Vin (min) (V) | -40 |
Vout (max) (V) | -1.2 | Vout (min) (V) | -37 |
Noise (µVrms) | 38 | Iq (typ) (mA) | 0.065 |
Thermal resistance θJA (°C/W) | 23 | Rating | Catalog |
Load capacitance (min) (µF) | 1 | Regulated outputs (#) | 1 |
Accuracy (%) | 2.4 | PSRR at 100 KHz (dB) | 35 |
Dropout voltage (Vdo) (typ) (mV) | 2400 | Operating temperature range (°C) | -40 to 125, 0 to 125 |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is LM337T/NOPB?
The LM337T/NOPB is a three-terminal adjustable negative voltage regulator integrated circuit manufactured by Texas Instruments. It is designed to provide a negative voltage output with adjustable voltage regulation, making it suitable for various applications such as power supplies, voltage inverters, and voltage regulators.
How Does LM337T/NOPB Work?
The LM337T/NOPB operates as a negative voltage regulator by adjusting the output voltage based on the resistor divider network connected to its adjust pin. It regulates the output voltage to a desired negative value relative to the reference voltage, providing a stable output even with input voltage and load variations.
How Many Pins does LM337T/NOPB have and What are the Functions of the Pinout Configuration?
The LM337T/NOPB is housed in a TO-220 package with 3 pins. The pinout configuration includes:
- Input (Vin): The input pin where the unregulated negative voltage is applied.
- Output (Vout): The regulated negative output pin.
- Adjust (Adj): The adjustment pin used to set the output voltage with an external resistor divider network.
What are the Pros and Cons of LM337T/NOPB?
Pros:
- Adjustable Output: Allows flexibility in setting the desired negative output voltage.
- Thermal Shutdown Protection: Includes thermal shutdown protection to prevent damage during over-temperature conditions.
- Wide Operating Voltage Range: Works within a wide input voltage range for versatility.
- Simple Design: Easy to use in various negative voltage regulation applications.
Cons:
- Heat Dissipation: May require a heat sink for high power dissipation applications.
- Regulation Efficiency: Linear regulators like the LM337T/NOPB may have lower efficiency compared to switching regulators.
- External Components: Additional resistors and capacitors may be needed for optimal performance.
Are There Any Equivalents/Alternatives to LM337T/NOPB for Recommendation?
- The LM7905 from Texas Instruments is a fixed negative voltage regulator alternative to the LM337T/NOPB.
- Alternatives to the LM337T/NOPB include the LT1963A from Analog Devices and the L7915CV from STMicroelectronics.
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