Texas Instruments LM337 Adjustable Negative Voltage Regulator SOIC-8, 100mA

The Texas Instruments LM337LM/NOPB is an adjustable 3-terminal negative voltage regulator designed to deliver a stable output current of 100mA across a versatile output voltage range from -1.2V to -37V. Its straightforward architecture requires only two external resistors to set the desired output voltage, making it exceptionally easy to integrate into your designs.

Compared to fixed regulators, this device provides enhanced performance and includes comprehensive overload protection features. The built-in current limit, thermal overload protection, and safe area protection ensure robust operation under demanding conditions. Notably, all protection circuitry remains fully functional even when the adjustment terminal is disconnected, adding an extra layer of reliability.

Key Features

• Adjustable output from -1.2V to -37V
• 100mA maximum output current
• Full overload protection (current limit, thermal, safe area)
• Constant current limit with temperature
• Typical line regulation: 0.01%/V
• Typical load regulation: 0.1%
• Floating design sees only input-to-output differential voltage
• Eliminates the need to stock many voltages
• Green product, no Sb/Br

Application Flexibility

The regulator operates with input voltages from -4.2V to -40V and is housed in an 8-pin SOIC package for surface mounting. It functions across a wide temperature range from -25°C to 100°C, making it suitable for various industrial and power management applications. Typically, only a single 1μF solid tantalum output capacitor is required, though an input bypass is recommended if the device is located more than 6 inches from the input filter capacitors. For improved transient response or higher ripple rejection, you can add a larger output capacitor or bypass the adjustment terminal.

Specifications

• Output Type: Adjustable
• Output Voltage Min: -37V<br