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.
All trademarks are the property of their respective owners.
|Part number||Order||Output options||Iout (Max) (A)||Vin (Max) (V)||Vin (Min) (V)||Vout (Max) (V)||Vout (Min) (V)||Fixed output options (V)||Package Group||Features||Regulated outputs (#)||Operating temperature range (C)||Thermal resistance θJA (°C/W)||Noise (uVrms)||Rating||PSRR @ 100 KHz (dB)||Accuracy (%)||Dropout voltage (Vdo) (Typ) (mV)||Iq (Typ) (mA)||Package size: mm2:W x L (PKG)||Radiation, SEL (MeV.cm2/mg)||Radiation, TID (Typ) (krad)|
|1.5||-4.2||-40||-1.2||-37||0||TO | 2||1||-55 to 150||137||1110||Space||30||4||3000||0.065||2TO: 989 mm2: 25.4 x 38.938 (TO | 2)||Bipolar|
|LM137QML-SP||Samples not available||
|1.5||-4.2||-40||-1.2||-37||0||TO | 3||1||-55 to 125||137||1110||Space||30||4||3000||0.065||3TO: 92 mm2: 9.14 x 10.03 (TO | 3)||Bipolar||30|