LM337资料.pdfVIP

LM137/LM237 LM337 THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATORS .OUTPUT VOLTAGE ADJUSTABLE DOWN TO Vref .1.5A GUARANTEED OUTPUT CURRENT .0.3%/V TYPICAL LOAD REGULATION .0.01%/V TYPICAL LINE REGULATION .CURRENT LIMIT CONSTANT WITH TEM- PERATURE .RIPPLE REJECTION : 77dB .STANDARD 3-LEAD TRANSISTOR PACK- AGES TO-3 .EXCELLENT THERMAL REGULATION: 0.002%/V .50ppm/°C TEMPERATURE COEFFICIENT DESCRIPTION The LM137 series are adjustable 3-terminal nega- tive voltage regulators capable of supplying in ex- cess- 1.5Aover a -1.2 to -37V output voltage range. They are exceptionally easy to use and require only TO-220 two external resistors to set the output voltage. Fur- ther, both line and load regulation are better than standard fixed regulators. Also, LM137 regulators are supplied in standard transistor packages which are easily mounted and handled. In addition to higher performance than fixed regulators, the LM137 series offer full overload protection available only in integrated circuits. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry re- mains fully functional even ifthe adjustment terminal TO-39 is disconnected. PIN CONNECTIONS TO-3 TO-39 TO-220 (bottom view) (bottom view) (front view)