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LM337T/NOPB
+StücklisteIC REG LIN NEG ADJ 1.5A TO220-3
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HerstellerNational Semiconductor
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Herstellerteil #LM337T/NOPB
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Datenblatt LM337T/NOPB DataSheet
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Paket TO-220-3
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Auf Lager6279
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Spezifikationen
| Attribut | Wert |
| Package / Case | Bulk |
| Part Status | Active |
| Output Configuration | Negative |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | -40V |
| Voltage - Output (Min/Fixed) | -1.2V |
| Voltage - Output (Max) | -37V |
| Current - Output | 1.5A |
| PSRR | 77dB (120Hz) |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Mounting Type | Through Hole |
Übersicht
Description
Key features include internal current limiting, thermal shutdown, and safe area compensation, which enhance the reliability and safety of the device. Its TO-220 package enables efficient heat dissipation, and its straightforward design requires only two external resistors to set the output voltage. The "NOPB" suffix indicates that the device is RoHS compliant, meaning it is free of lead and other hazardous substances. Overall, the LM337T/NOPB offers a versatile, reliable solution for negative voltage regulation needs in electronic projects.
Equivalent
1. L7912 - A negative voltage regulator by STMicroelectronics.
2. MC7912 - A similar part by ON Semiconductor.
3. KA7912 - Offered by Fairchild Semiconductor.
4. NTE1912 - NTE Electronics' equivalent.
5. L79L12 - By STMicroelectronics, suitable for lower current applications.
These alternatives generally conform to the same voltage regulation specifications as the LM337T/NOPB, but always verify exact specifications and pin configurations before use.
Features
1. Output Voltage Range: It allows for an adjustable output voltage from -1.2V to -37V, making it versatile for various applications.
2. Output Current: It can deliver a continuous load current of up to 1.5A.
3. Thermal Overload Protection: This feature safeguards the regulator against excessive junction temperatures.
4. Short-Circuit Protection: It includes robust protection against output short circuits.
5. Safe Operating Area Protection: Ensures stable performance across the operating range without risk of damage.
6. Low Output Voltage: Provides a low dropout voltage, typically around 3V at full load current.
7. Reliable Performance: Offers high performance with low noise and excellent ripple rejection (typically 77 dB).
8. TO-220 Package: The LM337T comes in a TO-220 package, which is suitable for mounting on a heat sink to enhance thermal management.
These features make the LM337T/NOPB suitable for use in power supply circuits, battery chargers, and other electronic devices requiring negative voltage regulation.
Pinout
1. Input (Vin): This pin receives the negative input voltage, which should be at least 3V more negative than the desired output voltage.
2. Output (Vout): This pin provides the regulated negative output voltage. The output voltage is adjusted by connecting a resistor divider between the output and adjust pins.
3. Adjust (Adj): This pin is used to set the output voltage. By connecting a resistor between the output and the adjust pin, and another resistor from the adjust pin to ground, the output voltage can be varied.
The LM337T/NOPB is designed for negative voltage regulation applications and is commonly used in power supplies and adjustable voltage outputs. It provides features such as current limiting, thermal overload protection, and safe area compensation to ensure reliable performance across various operating conditions.