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LM137JAN 3-Terminal Adjustable Negative Regulators Literature Number: SNVS332A
December 8, 2010 3-Terminal Adjustable Negative Regulators General Description The LM137 are adjustable 3-terminal negative voltage regu- lators capable of supplying in excess of −1.5A over an output voltage range of −37V to −1.2V. These regulators are excep- tionally easy to apply, requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency com- pensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 se- ries 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 lo- cal on-card regulation, programmable-output voltage regula- tion or precision current regulation. The LM137 are ideal complements to the LM117 adjustable positive regulators.
Features
■ Output voltage adjustable from −37V to −1.2V ■ 1.5A output current guaranteed, −55°C to +150°C ■ Line regulation typically 0.01%/V ■ Load regulation typically 0.3% ■ Excellent thermal regulation, 0.002%/W ■ 77 dB ripple rejection ■ Excellent rejection of thermal transients ■ 50 ppm/°C temperature coefficient ■ Temperature-independent current limit ■ Internal thermal overload protection ■ Standard 3-lead transistor package ■ Output is short circuit protected LM137 Series Packages and Power Capability Rated Design Device Package Power Load Dissipation Current LM137 TO-3 (K) 20W 1.5A TO-39 (H) 2W 0.5A
Ordering Information
NS Part Number JAN Part Number NS Package Number Package Description JL137BXA JM38510/11803BXA H03A 3LD T0–39 Metal Can JL137SXA JM38510/11803SXA H03A 3LD T0–39 Metal Can JL137SYA JM38510/11804SYA K02C 2LD Low Profile T0–3 Metal Can © 2011 National Semiconductor Corporation 201297 www.national.com LM137JAN 3-Terminal Adjustable Negative Regulators
See NS Package Number K02C TO-39 Metal Can Package 20129706 Case Is Input Bottom View See NS Package Number H03A Typical Applications Adjustable Negative Voltage Regulator 20129701 Full output current not available at high input-output voltages †C1 = 1 μF solid tantalum or 10 μF aluminum electrolytic required for stability *C2 = 1 μF solid tantalum is required only if regulator is more than 4″ from power-supply filter capacitor Output capacitors in the range of 1 μF to 1000 μF of aluminum or tantalum electrolytic are commonly used to provide improved output impedance and rejection of transients www.national.com 2 LM137JAN
Absolute Maximum Ratings (Note 1) Power Dissipation (Note 2) Internally Limited Input-Output Voltage Differential 40V Operating Ambient Temperature Range −55°C ≤ TA ≤ +125°C Operating Junction Temperature Range −55°C ≤ TJ ≤ +150°C Maximum Junction Temperature +150°C Storage Temperature −65°C ≤ TA ≤ +150°C Lead Temperature (Soldering, 10 sec.) 300°C Minimum Input Voltage −41.25V Maximum Power Dissipation (@25°C) T0–3 28 Watts T0–39 2.5Watts Thermal Resistance θJA T0–3 Metal Can (Still Air) 40°C/W T0–3 Metal Can (500LF/Min Air Flow) 14°C/W T0–39 Metal Can (Still Air @ 0.5W) 174°C/W T0–39 Metal Can (500LF/Min Air Flow @ 0.5W) 64°C/W θJC T0–3 4°C/W T0–39 Metal Can (@ 1.0W) 15°C/W Package Weight (typical) T0–3 12,750mg T0–39 Metal Can 955mg ESD Rating (Note 3) 4K Volts Recommended Operating Conditions TA −55°C ≤ TA ≤ +125°C Input Voltage Range −41.25V to −4.25V Quality Conformance Inspection Mil-Std-883, Method 5005 — Group A Subgroup Description Temp (°C)
1 Static tests at +25
2 Static tests at +125
3 Static tests at -55
4 Dynamic tests at +25
5 Dynamic tests at +125
6 Dynamic tests at -55
7 Functional tests at +25
8A Functional tests at +125 8B Functional tests at -55
9 Switching tests at +25
10 Switching tests at +125
11 Switching tests at -55
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Symbol Parameter Conditions Notes Min Max Units Sub- groups VOUT Output Voltage VIN = -4.25V, IL = 5mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -4.25V, IL = 500mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -41.25V, IL = 5mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -41.25V, IL = 50mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VR Line Line Regulation VIN = -41.25V to -4.25V, IL = 5mA -9.0 9.0 mV 1 -23 23 mV 2, 3 VR Load Load Regulation VIN = -6.25V, IL = 5mA to 500mA -12 12 mV 1 -24 24 mV 2, 3 VIN = -41.25V, IL = 5mA to 50mA -6.0 6.0 mV 1 -12 12 mV 2, 3 VIN = -6.25V, IL = 5mA to 200mA -6.0 6.0 mV 1 -12 12 mV 2, 3 VRth Thermal Regulation VIN = -14.6V, IL = 500mA -5.0 5.0 mV 1 IAdj Adjust Pin Current VIN = -4.25V, IL = 5mA 25 100 µA 1, 2, 3 VIN = -41.25V, IL = 5mA 25 100 µA 1, 2, 3 ΔIAdj / VLine Adjust Pin Current Change vs. Line Voltage VIN = -41.25V to -4.25V, IL = 5mA -5.0 5.0 µA 1, 2, 3 ΔIAdj / ILoad Adjust Pin Current Change vs. Load Current VIN = -6.25V, IL = 5mA to 500mA -5.0 5.0 µA 1, 2, 3 IOS Output Short Circuit Current VIN = -4.25V 0.5 1.8 A 1, 2, 3 VIN = -40V 0.05 0.5 A 1, 2, 3 VOUT Recovery Output Voltage Recovery After Output Short Circuit Current VIN = -4.25V -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -40V -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 IQ Minimum Load Current VIN = -4.25V 0.2 3.0 mA 1, 2, 3 VIN = -14.25V 0.2 3.0 mA 1, 2, 3 VIN = -41.25V 1.0 5.0 mA 1, 2, 3 VStart Voltage Start-up VIN = -4.25V, IL = 500mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VOUT Output Voltage VIN = -6.25V, IL = 5mA (No Subgroup) (Note 4) -1.3 -1.2 V www.national.com 4 LM137JAN
Symbol Parameter Conditions Notes Min Max Units Sub- groups ΔVIN / ΔVOUT Ripple Rejection VIN = -6.25V, IL = 125mA, eI = 1VRMS at 2400Hz 48 dB 4 VNO Output Noise Voltage VIN = -6.25V, IL = 50mA 120 µVRMS ΔVOUT / ΔVIN Line Transient Response VIN = -6.25V, VPulse = -1V, IL = 50mA 80 mV/V 7 ΔVOUT / ΔIL Load Transient Response VIN = -6.25V, IL = 50mA, ΔIL = 200mA (Note 5) 60 mV 7 DC Parameters: Drift Values Delta calculations performed on JAN S devices at group B, subgroup 5 only. Symbol Parameter Conditions Notes Min Max Units Sub- groups VOUT Output Voltage VIN = -4.25V, IL = 5mA -0.01 0.01 V 1 VIN = -4.25V, IL = 500mA -0.01 0.01 V 1 VIN = -41.25V, IL = 5mA -0.01 0.01 V 1 VIN = -41.25V, IL = 50mA -0.01 0.01 V 1 VR Line Line Regulation VIN = 41.25V to -4.25V, IL = 5mA -4.0 4.0 mV 1 IAdj Adjust Pin Current VIN = -4.25V, IL = 5mA -10 10 µA 1 VIN = -41.25V, IL = 5mA -10 10 µA 1 5 www.national.com LM137JAN
DC Parameters: Symbol Parameter Conditions Notes Min Max Units Sub- groups VOUT Output Voltage VIN = -4.25V, IL = 5mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -4.25V, IL = 1.5A -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -41.25V, IL = 5mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -41.25V, IL = 200mA -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VR Line Line Regulation -41.25V ≤ VIN ≤ -4.25V, IL = 5mA -9.0 9.0 mV 1 -23 23 mV 2, 3 VR Load Load Regulation VIN = -6.25V, IL = 5mA to 1.5A -6.0 6.0 mV 1 -12 12 mV 2, 3 VIN = -41.25V, IL = 5mA to 200mA -6.0 6.0 mV 1 -12 12 mV 2, 3 VRth Thermal Regulation VIN = -14.6V, IL = 1.5A -5.0 5.0 mV 1 IAdj Adjust Pin Current VIN = -4.25V, IL = 5mA 25 100 µA 1, 2, 3 VIN = -41.25V, IL = 5mA 25 100 µA 1, 2, 3 ΔIAdj / VLine Adjust Pin Current Change vs. Line Voltage -41.25V ≤ VIN ≤ -4.25, IL = 5mA -5.0 5.0 µA 1, 2, 3 ΔIAdj / ILoad Adjust Pin Current Change vs. Load Current VIN = -6.25V, IL = 5mA to 1.5A -5.0 5.0 µA 1, 2, 3 IOS Output Short Circuit Current VIN = -4.25V 1.5 3.5 A 1, 2, 3 VIN = -40V 0.2 1.0 A 1, 2, 3 VOUT Recovery Output Voltage Recovery VIN = -4.25V -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VIN = -40V -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 IQ Minimum Load Current VIN = -4.25V 0.2 3.0 mA 1, 2, 3 VIN = -14.25V 0.2 3.0 mA 1, 2, 3 VIN = -41.25V 1.0 5.0 mA 1, 2, 3 VStart Voltage Start-up VIN = 4.25V, IL = 1.5A -1.275 -1.225 V 1 VOUT Output Voltage VIN = -6.25V, IL = 5mA No Subgroup (Note 4) -1.3 -1.2 V AC Parameters: Symbol Parameter Conditions Notes Min Max Units Sub- groups ΔVIN / ΔVOUT Ripple Rejection VIN = -6.25V, IL = 500mA, eI = 1VRMS at 2400Hz 50 dB 4 VNO Output Noise Voltage VIN = -6.25V, IL = 100mA 120 µVRMS ΔVOUT / ΔVIN Line Transient Response VIN = -6.25V, IL = 100mA, VPulse = -1V 80 mV/V 7 ΔVOUT / ΔIL Load Transient Response VIN = -6.25V, IL = 100mA, ΔIL = 400mA (Note 6) 60 mV 7 www.national.com 6 LM137JAN
DC Parameters: Drift Values Delta calculations performed on JAN S devices at group B, subgroup 5 only. Symbol Parameter Conditions Notes Min Max Units Sub- groups VOUT Output Voltage VIN = -4.25V, IL = 5mA -0.01 0.01 V 1 VR line Line Regulation VIN = -41.25V to -4.25, IL = 5mA -4.0 4.0 mV 1 IAdj Adjust Pin Current VIN = -41.25V, IL = 5mA -10 10 µA 1 Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax - TA)/ θJA or the number given in the Absolute Maximum Ratings, whichever is lower. Note 3: Human body model, 100pF discharged through 1.5KΩ Note 4: Tested at +125°C ; correlated to +150°C Note 5: Slash sheet limit of 0.3mV/mA is equivalent to 60mV Note 6: Slash sheet limit of 0.15mV/mA is equivalent to 60mV 7 www.national.com LM137JAN
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Adjustable Lab Voltage Regulator 20129709 Full output current not available at high input-output voltages *The 10 μF capacitors are optional to improve ripple rejection Current Regulator 20129711 Negative Regulator with Protection Diodes 20129713 *When CL is larger than 20 μF, D1 protects the LM137 in case the input supply is shorted **When C2 is larger than 10 μF and −VOUT is larger than −25V, D2 protects the LM137 in case the output is shorted −5.2V Regulator with Electronic Shutdown* 20129710 *Minimum output ″ −1.3V when control input is low Adjustable Current Regulator 20129712 High Stability −10V Regulator 20129714 www.national.com 10 LM137JAN
Typical Performance Characteristics (H & K Packages) Load Regulation 20129716 Current Limit 20129717 Adjustment Current 20129718 Dropout Voltage 20129719 Temperature Stability 20129720 Minimum Operating Current 20129721 11 www.national.com LM137JAN
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Revision History
Date Released Revision Section Changes 12/08/2010 A New Release, Corporate format 2 MDS data sheets converted into one Corp. data sheet format. MJLM137-H Rev. 0A0, MJLM137-K Rev. 0A0. MDS data sheets will be archived. 13 www.national.com LM137JAN
Physical Dimensions inches (millimeters) unless otherwise noted Metal Can Package (H) Metal Can Package (K) www.national.com 14 LM137JAN
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