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Details, datasheet, quote on part number:LM237H
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Datasheet text preview:
LM137/LM237 LM 3 3 7
THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATORS
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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 TEMPERATURE RIPPLE REJECTION : 77dB STANDARD 3-LEAD TRANSISTOR PACKAGES EXCELLENT THERMAL REGULATION: 0.002%/V 50ppm/ °C TEMPERATURE COEFFICIENT
T O-3
D ESC R I PT I O N The LM137 series are adjustable 3-terminal negative voltage regulators capable of supplying in excess - 1.5A over a - 1.2 to - 37V output voltage range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, 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, th e 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 remains fully functional even if the adjustment terminal is disconnected. P I N CO NNE C TI O N S
TO-3 ( bottom view) TO-39 (bottom view)
TO-220
TO-39
TO-220 (front view)
1 - Adj 2 - O ut put 3 - I nput
1 - Output 2 - Adj Case i s in put
1 - Adj 2 - Output 3 - input
Heatsi nk surf ace connect ed t o input
March 1993
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L M 1 37 -L M 23 7- L M 3 3 7
ABSOLUTE M A XI M U M R A T I N G
Symbol VI - VO IO Toper Input Output Voltage Differential Output Current TO-220/TO-3 TO-39 LM137 LM237 LM337 Tstg Ptot Parameter Value 40 1.5 0.5 -55 to 150 -25 to 150 0 to 125 -65 to 150 Internally Limited
oC oC
Unit V A
W
TH E RMA L CHA R ACTE R I S TI CS
Symbol Parameter TO-3 TO-220 TO-39 Rthj-amb Junction-ambient Thermal Resistance TO-3 TO-220 TO-39 Typ. Max. 4 3 15 35 70 160
o
Unit
o
Rthj-case Junction-case Thermal Resistance
C/W
C/W
O R D E R C O D ES
PART NUMBER LM137 LM237 LM337 TEMPERATURE RANGE -55 to 150 oC -25 to 150 oC 0 to 125 C
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PACKAGE TO-3 LM137K LM237K LM337K LM237SP LM337SP TO-220 TO-39 LM137H LM237H LM337H
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L M 1 3 7 -L M 23 7 -L M 3 37
SCHEMATIC D I A G R A M
3/14
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