ONSEMI LM337BTG Adjustable Negative Voltage Regulator 1.5A TO-220AB

The ONSEMI LM337BTG is a highly versatile, adjustable 3-terminal negative voltage regulator designed for robust and reliable power management. Capable of supplying in excess of 1.5A, it operates over a wide output voltage range from -1.2V to -37V. This device is exceptionally user-friendly, requiring only two external resistors to set the desired output voltage, which simplifies circuit design and reduces component count.

Engineered for maximum reliability, the regulator incorporates several key protective features. Internal current limiting and thermal shutdown safeguard the device against overload conditions, while output transistor safe-area compensation provides inherent protection, making it essentially blow-out proof. Its floating operation capability makes it particularly suited for high-voltage applications, offering flexibility in more complex power supply designs.

Primary Applications & Versatility

This voltage regulator serves a wide variety of roles in electronic design. It is ideal for providing local, on-card regulation, helping to improve system stability and noise immunity. Beyond standard voltage regulation, its adjustable nature allows it to be configured as a programmable output regulator. Furthermore, by connecting a fixed resistor between the adjustment and output terminals, the LM337BTG can be effectively used as a precision current regulator, adding to its utility in constant-current source circuits.

Key Specifications & Physical Details

Housed in a industry-standard TO-220AB package with 3 pins for through-hole mounting, it ensures easy integration and excellent thermal performance when attached to a heat sink. The device operates reliably across a broad temperature range from -40°C to 125°C, making it suitable for demanding industrial environments. Its robust design eliminates the need to stock multiple fixed-voltage regulators, as one