Overview
The LM337BD2TG is an adjustable 3-terminal negative linear voltage regulator produced by onsemi. It is capable of supplying in excess of 1.5 A over an output voltage range of -1.2 V to -37 V. This regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. It features internal current limiting, thermal shutdown, and safe area compensation, making it essentially blow-out proof. The LM337BD2TG is available in a surface mount D2PAK package and is Pb-free and RoHS compliant.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 1.5 A | A |
| Output Voltage Range | -1.2 V to -37 V | V |
| Input-Output Voltage Differential | 40 V | V |
| Power Dissipation | Internally Limited | W |
| Thermal Resistance, Junction-to-Ambient | 70 °C/W | °C/W |
| Thermal Resistance, Junction-to-Case | 5.0 °C/W | °C/W |
| Operating Junction Temperature Range | -40 to +125 °C | °C |
| Storage Temperature Range | -65 to +150 °C | °C |
| Line Regulation | 0.01% to 0.04%/V | %/V |
| Load Regulation | 0.3% to 1%/V | %/V |
| Ripple Rejection Ratio | 77 dB | dB |
| Output Noise (RMS) | 0.003% of VO | % |
Key Features
- Output current in excess of 1.5 A
- Output voltage adjustable between -1.2 V and -37 V
- Internal thermal overload protection
- Internal short circuit current limiting constant with temperature
- Output transistor safe-area compensation
- Floating operation for high voltage applications
- Eliminates the need for stocking many fixed voltages
- Available in surface mount D2PAK and standard 3-lead transistor packages
- Pb-free and RoHS compliant
Applications
The LM337BD2TG serves a wide variety of applications, including local, on-card regulation. It can be used to make a programmable output regulator or as a precision current regulator by connecting a fixed resistor between the adjustment and output terminals. Other applications include high voltage systems where floating operation is necessary, and in scenarios where adjustable voltage regulation is required.
Q & A
- What is the output current capability of the LM337BD2TG?
The LM337BD2TG is capable of supplying in excess of 1.5 A.
- What is the adjustable output voltage range of the LM337BD2TG?
The output voltage can be adjusted between -1.2 V and -37 V.
- Does the LM337BD2TG have internal protection features?
Yes, it includes internal thermal overload protection, short circuit current limiting, and safe area compensation.
- What packages are available for the LM337BD2TG?
The LM337BD2TG is available in surface mount D2PAK and standard 3-lead transistor packages.
- Is the LM337BD2TG Pb-free and RoHS compliant?
Yes, the LM337BD2TG is Pb-free and RoHS compliant.
- How do you set the output voltage of the LM337BD2TG?
The output voltage can be set using only two external resistors.
- What is the ripple rejection ratio of the LM337BD2TG?
The ripple rejection ratio is 77 dB.
- What is the typical line regulation of the LM337BD2TG?
The typical line regulation is 0.01% to 0.04%/V.
- Can the LM337BD2TG be used as a precision current regulator?
Yes, by connecting a fixed resistor between the adjustment and output terminals, it can be used as a precision current regulator.
- What is the operating junction temperature range of the LM337BD2TG?
The operating junction temperature range is -40 to +125 °C.
