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Absolute Maximum Ratings (Notes 1, If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Dissipation Internally Limited Input-Output Voltage Differential 40V Operating Junction Temperature Range LM137 −55˚C to +150˚C LM337 0˚C to +125˚C LM337I −40˚C to +125˚C Storage Temperature −65˚C to +150˚C Lead Temperature (Soldering, 10 sec.) 300˚C Plastic Package (Soldering, 4 sec.) 260˚C ESD Rating 2k Volts Electrical Characteristics (Note 1) Parameter Conditions LM137 LM337 Units Min Typ Max Min Typ Max Line Regulation T j = 25˚C, 3V ≤ |V IN −VOUT| ≤ 40V 0.01 0.02 0.01 0.04 %/V (Note 2) I L =10mA Load Regulation T j = 25˚C, 10 mA ≤ I OUT ≤ I MAX 0.3 0.5 0.3 1.0 % Thermal Regulation T j = 25˚C, 10 ms Pulse 0.002 0.02 0.003 0.04 %/W Adjustment Pin Current 65 100 65 100 µA Adjustment Pin Current Charge 10 mA ≤ I L ≤ I MAX 25 25 µA 3.0V ≤ |V IN −VOUT| ≤ 40V, T A = 25˚C Reference Voltage T j = 25˚C (Note 3) −1.225 −1.250 −1.275 −1.213 −1.250 −1.287 V 3V ≤ |V IN −VOUT| ≤ 40V, (Note 3) −1.200 −1.250 −1.300 −1.200 −1.250 −1.300 V 10 mA ≤ I OUT ≤ I MAX,P ≤ P MAX Line Regulation 3V ≤ |V IN −VOUT| ≤ 40V, (Note 2) 0.02 0.05 0.02 0.07 %/V Load Regulation 10 mA ≤ I OUT ≤ I MAX, (Note 2) 0.3 1 0.3 1.5 % Temperature Stability T MIN ≤ T j ≤ T MAX 0.6 0.6 % Minimum Load Current |V IN −VOUT| ≤ 40V 2.5 5 2.5 10 mA |V IN −VOUT| ≤ 10V 1.2 3 1.5 6 mA Current Limit |V IN −VOUT| ≤ 15V K, MP and T Package 1.5 2.2 3.5 1.5 2.2 3.7 A H Package 0.5 0.8 1.8 0.5 0.8 1.9 A |V IN −VOUT| = 40V, Tj = 25˚C K, MP and T Package 0.24 0.4 0.15 0.4 A H Package 0.15 0.17 0.10 0.17 A RMS Output Noise, % of V OUT T j = 25˚C, 10 Hz ≤ f ≤ 10 kHz 0.003 0.003 % Ripple Rejection Ratio V OUT = −10V, f = 120 Hz 60 60 dB C ADJ =10µF 66 77 66 77 dB Long-Term Stability T j = 125˚C, 1000 Hours 0.3 1 0.3 1 % Thermal Resistance, Junction to Case H Package 12 15 12 15 ˚C/W K Package 2.3 3 2.3 3 ˚C/W T Package 4 ˚C/W Thermal Resistance, Junction to Ambient (No Heat Sink) H Package 140 140 ˚C/W K Package 35 35 ˚C/W T Package MP Package 50 170 ˚C/W ˚C/W Note 1: Unless otherwise specified, these specifications apply −55˚C ≤ Tj ≤ +150˚C for the LM137, 0˚C ≤ Tj ≤ +125˚C for the LM337; VIN −VOUT = 5V; and IOUT = 0.1A for the TO-39 package and IOUT = 0.5A for the TO-3, SOT-223 and TO-220 packages. Although power dissipation is internally limited, these specifications are applicable for power dissipations of 2W for the TO-39 and SOT-223 (see Application Hints), and 20W for the TO-3, and TO-220. IMAX is 1.5A for the TO-3, SOT-223 and TO-220 packages, and 0.2A for the TO-39 package. Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Load regulation is measured on the output pin at a point 1⁄8" below the base of the TO-3 and TO-39 packages. Note 3: Selected devices with tightened tolerance reference voltage available. www.national.com 2 |
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