描述 Description

The LM137 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of ?1.5A over an output voltage range of ?37V to ?1.2V. These regulators are exceptionally easy to apply, requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 series features internal current limiting, thermal shutdown and safe-area compensation, making them virtually blowout-proof against overloads. The LM137 serves a wide variety of applications including local on-card regulation, programmable-output voltage regulation or precision current regulation. The LM137 are ideal complements to the LM117 adjustable positive regulators.

特性 Features

? Output Voltage Adjustable from ?37V to ?1.2V
? 1.5A Output Current Specified, ?55°C to +150°C
? Line Regulation Typically 0.01%/V
? Load Regulation Typically 0.3%
? Excellent Thermal Regulation, 0.002%/W
? 77 dB Ripple Rejection
? Excellent Rejection of Thermal Transients
? 50 ppm/°C Temperature Coefficient
? Temperature-independent Current Limit
? Internal Thermal Overload Protection
? Standard 3-lead Transistor Package
? Output is Short Circuit Protected