Overview
The LM337T/NOPB is a 1.5-A, negative, adjustable linear voltage regulator produced by Texas Instruments. This component is part of the LM337 series, which are three-terminal adjustable negative voltage regulators. The LM337T/NOPB is capable of supplying currents in excess of 1.5 A over an output voltage range of -1.2 V to -37 V. It is designed to be highly versatile and easy to use, requiring only two external resistors to set the output voltage and one output capacitor for frequency compensation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 1.5 A | A |
| Output Voltage Range | -1.2 V to -37 V | V |
| Line Regulation | 0.01%/V (Typical) | %/V |
| Load Regulation | 0.3% (Typical) | % |
| Ripple Rejection | 77 dB | dB |
| Temperature Coefficient | 50 ppm/°C | ppm/°C |
| Thermal Overload Protection | Yes | |
| Internal Short-Circuit Current Limiting | Yes | |
| Operating Temperature Range | 0 to 125 °C | °C |
| Package Type | TO-220 (NDE) | |
| Number of Pins | 3 |
Key Features
- Adjustable output voltage from -1.2 V to -37 V using two external resistors.
- High output current capability of up to 1.5 A.
- Excellent line and load regulation with typical values of 0.01%/V and 0.3%, respectively.
- High ripple rejection of 77 dB.
- Low temperature coefficient of 50 ppm/°C.
- Internal thermal overload protection and short-circuit current limiting.
- Standard 3-lead transistor package (TO-220) for easy mounting and handling.
Applications
- Adjustable negative voltage regulators in various electronic systems.
- Power supplies requiring adjustable negative output voltages.
- Lab voltage regulators where adjustable negative voltages are necessary.
- Systems requiring high current and adjustable negative voltage regulation, such as in industrial and automotive applications.
Q & A
- What is the output voltage range of the LM337T/NOPB?
The output voltage range of the LM337T/NOPB is from -1.2 V to -37 V.
- How much output current can the LM337T/NOPB supply?
The LM337T/NOPB can supply up to 1.5 A of output current.
- What is the typical line regulation of the LM337T/NOPB?
The typical line regulation is 0.01%/V.
- Does the LM337T/NOPB have thermal overload protection?
Yes, the LM337T/NOPB features internal thermal overload protection.
- What package type is the LM337T/NOPB available in?
The LM337T/NOPB is available in a TO-220 (NDE) package with 3 pins.
- What is the operating temperature range of the LM337T/NOPB?
The operating temperature range is from 0 to 125 °C.
- How do you set the output voltage of the LM337T/NOPB?
The output voltage can be set using two external resistors.
- Does the LM337T/NOPB require any additional components for stability?
Yes, it requires one output capacitor for frequency compensation and possibly additional capacitors depending on the application.
- What is the ripple rejection of the LM337T/NOPB?
The ripple rejection is 77 dB.
- Is the LM337T/NOPB suitable for high-power applications?
Yes, it is suitable for high-power applications with an internally limited power dissipation and thermal regulation features.
