Overview
The LM337TG is an adjustable output negative voltage regulator produced by onsemi. This 3-terminal regulator is capable of supplying in excess of 1.5 A over an output voltage range of -1.2 V to -37 V. It is designed to be exceptionally easy to use, requiring only two external resistors to set the output voltage. The LM337TG features internal current limiting, thermal shutdown, and safe area compensation, making it essentially blow-out proof. This regulator is suitable for a wide variety of applications, including local, on-card regulation, and can also be used as a precision current regulator or a programmable output regulator.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Input Voltage - Min | -4.2 | V |
| Input Voltage - Max | -40 | V |
| Output Voltage Range | -1.2 to -37 | V |
| Output Current | 1.5 | A |
| Minimum Operating Temperature | 0 | °C |
| Maximum Operating Temperature | 125 | °C |
| Quiescent Current (Iq) | 6 | mA |
| Supply Current (Max) | 10 | mA |
| Pulse Stability Ripple Rejection (120Hz) | 77 | dB |
| Thermal Resistance, Junction-to-Ambient | 5.0 | °C/W |
| Thermal Resistance, Junction-to-Case | 4.0 | °C/W |
Key Features
- Adjustable output voltage range from -1.2 V to -37 V.
- Output current in excess of 1.5 A.
- Internal thermal overload protection and short circuit current limiting.
- Safe area compensation and essentially blow-out proof design.
- Floating operation for high voltage applications.
- Available in surface mount D2PAK and standard 3-lead transistor package.
- Pb-free and RoHS compliant.
Applications
The LM337TG is versatile and can be used in various applications, including:
- Local, on-card regulation.
- Programmable output regulator by connecting a fixed resistor between the adjustment and output terminals.
- Precision current regulator by using the device in a specific configuration.
- High voltage applications due to its floating operation capability.
Q & A
- What is the output voltage range of the LM337TG?
The output voltage range of the LM337TG is from -1.2 V to -37 V. - What is the maximum output current of the LM337TG?
The maximum output current of the LM337TG is 1.5 A. - Does the LM337TG have internal protection features?
Yes, the LM337TG has internal thermal overload protection and short circuit current limiting. - What is the operating temperature range of the LM337TG?
The operating temperature range of the LM337TG is from 0°C to 125°C, and for some packages, it can be from -40°C to 125°C. - Is the LM337TG Pb-free and RoHS compliant?
Yes, the LM337TG is Pb-free and RoHS compliant. - How do you set the output voltage of the LM337TG?
The output voltage of the LM337TG is set using two external resistors connected to the adjustment and output terminals. - Can the LM337TG be used as a precision current regulator?
Yes, the LM337TG can be used as a precision current regulator by configuring it appropriately. - What is the quiescent current (Iq) of the LM337TG?
The quiescent current (Iq) of the LM337TG is 6 mA. - What is the ripple rejection of the LM337TG at 120 Hz?
The ripple rejection of the LM337TG at 120 Hz is 77 dB. - What are the common package types for the LM337TG?
The LM337TG is available in surface mount D2PAK and standard 3-lead transistor package.
