NEGATIVE ADJUSTABLE VOLTAGE REGULATOR IP137K / LM137K IP137AK / LM137AK IP137HVK / LM137HVK IP137AHVK / LM137AHVK IP337K / LM337K IP337AK / LM337AK IP337HVK / LM337HVK IP337AHVK / LM337AHVK FEATURES APPLICATIONS 1.5A Output Current Guaranteed Adjustable Power Supplies Internal Thermal Overload Protection System Power Supplies Output Short Circuit Protected Precision Voltage / Current Regulators Hermetic Metal TO3 Package Screening Options Available DESCRIPTION The 137/337 Series regulators are adjustable 3 terminal voltage regulators capable of supplying in excess of -1.5A over an output voltage range of -1.2V to -37V (HV Series, -47V). The regulators are exceptionally easy to apply requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency compensation. Every effort has been made to make these devices easy to use and difficult to damage. Internal current limiting and power limiting coupled with true thermal limiting prevents damage due to overloads or shorts, even if the regulators are not fastened to a heat sink. ABSOLUTE MAXIMUM RATINGS (T = 25C unless otherwise stated) C Standard 40V V - V Input Output Voltage Differential I O HV Series 50V I Output Current Internally Limited O P Power Dissipation Internally Limited D 137 Series -55 to +150C Operating Junction T J Temperature Range 337 Series 0 to +125C T Storage Temperature Range -65 to +150C stg THERMAL PROPERTIES Symbols Parameters Min. Typ. Max. Units R Thermal Resistance, Junction To Case 3 C/W JC ** This datasheet supersedes document 2831 Semelab Limited reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. SSSSeeeemmmmeeeellllaaaabbbb LLLLiiiimmmmiiiitttteeeedddd Coventry Road, Lutterworth, Leicestershire, LE17 4JB Document Number 8380 Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales semelab-tt.com Website: NEGATIVE ADJUSTABLE VOLTAGE REGULATOR (1)(3) ELECTRICAL CHARACTERISTICS (T = 25C unless otherwise stated) C LM137, IP137, LM137HV, IP137HV Symbols Parameters Test Conditions Min. Typ Max. Units I = 10mA -1.225 -1.250 -1.275 OUT V Reference Voltage V 10mA I I , P P , REF OUT MAX MAX -1.200 -1.250 -1.300 3V (V -V ) V IN OUT MAX 3V (V -V ) V , 0.010 0.020 V OUT IN OUT MAX (2) %/V Line Regulation I = 10mA V OUT IN 0.020 0.050 V 5V 15 25 mV OUT V 5V 0.3 0.5 % V OUT OUT (2)(3) 10mA I I Load Regulation OUT MAX I OUT V 5V 20 50 mV OUT V 5V 0.3 1.0 % OUT V = -14.58V, I = 1.5A, IN OUT Thermal Regulation 0.002 0.02 %/W P = 20W, T = 25C, 10ms Pulse D A V = -10V C = 0 60 OUT ADJ Ripple Rejection dB C = 10F f = 120Hz 66 77 ADJ I Adjust Pin Current 65 100 ADJ 10mA I I 0.5 5 OUT MAX A I 3V (V -V ) 40V Adjust Pin Current Change 2 5 ADJ IN OUT 3V (V -V ) 50V ((((HHHHVVVV SSSSeeeerrrriiiieeeessss)))) 3 6 IN OUT (V - V ) 40V 2.5 5 IN OUT I Minimum Load Current mA MIN (V - V ) 10V 1.2 3 IN OUT (V - V ) 15V 1.5 2.2 3.2 IN OUT I (V - V ) = 40V Current Limit A 0.24 0.4 CL IN OUT (V - V ) = 50V ((((HHHHVVVV SSSSeeeerrrriiiieeeessss)))) 0.2 0.4 0.8 IN OUT V OUT Temperature Stability 0.6 TEMP V OUT T = 125C, 1000Hrs % Long Term Stability 0.3 1.0 A TIME RMS Output Noise e T = 25C, 10Hz f 10KHz 0.003 n A (% of V ) OUT NNNNooootttteeeessss The denotes the specifications which apply over the full operating temperature range. (1) Test conditions unless otherwise stated: V - V = 5V, I = 0.5A, P = 20W, I = 1.5A IN OUT OUT MAX MAX (2) Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to heating 1 effects are covered under thermal regulation specifications. Load regulation is measured at / below the bottom of the package. 8 (3) V = 40V for LM137, IP137, LM137A, IP137A, LM337, IP337, LM337A, IP337A MAX V = 50V for LM137HV, IP137HV, LM137AHV, IP137AHV, LM337HV, IP337HV, LM337AHV, IP337AHV MAX SSSSeeeemmmmeeeellllaaaabbbb LLLLiiiimmmmiiiitttteeeedddd Coventry Road, Lutterworth, Leicestershire, LE17 4JB Document Number 8380 Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales semelab-tt.com Website: