LM137QML 3-Terminal Adjustable Negative Regulators General Description Features The LM137 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of −1.5A over an output voltage range of −37V to −1.2V. These regulators are exceptionally easy to apply, requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 series features internal current limiting, thermal shutdown and safe-area compensation, making them virtually blowout-proof against overloads. The LM137 serve a wide variety of applications including local on-card regulation, programmable-output voltage regulation or precision current regulation. The LM137 are ideal complements to the LM117 adjustable positive regulators. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 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 Device Package Rated Power Dissipation Design Load Current LM137 TO-3 (K) TO-39 (H) 20W 2W 1.5A 0.5A Ordering Information NS Part Number SMD Part Number NS Package Number Package Description LM137K/883 K02C 2LD Low Profile T0–3 Metal Can LM137H/883 H03A 3LD T0–39 Metal Can LM137HPQMLV 5962P9951701VXA 30k rd(Si) H03A 3LD T0–39 Metal Can LM137H1PQMLV 5962P9951708VXA 30k rd(Si) H03A 3LD T0–39 Metal Can LM137H MD8 (Note 1) Bare Die LM137KG MD8 (Note 1) Bare Die Note 1: FOR ADDITIONAL DIE INFORMATION, PLEASE VISIT THE HI REL WEB SITE AT: www.national.com/analog/space/level_die © 2012 Texas Instruments Incorporated 201224 SNVS313B www.ti.com LM137QML 3-Terminal Adjustable Negative Regulators March 21, 2012 LM137QML Connection Diagrams TO-3 Metal Can Package TO-39 Metal Can Package 20122406 Case Is Input Bottom View See NS Package Number H03A 20122405 Case is Input Bottom View See NS Package Number K02C Typical Applications Adjustable Negative Voltage Regulator 20122401 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.ti.com 2 LM137QML Absolute Maximum Ratings (Note 2) Power Dissipation (Note 3) Input-Output Voltage Differential Operating Ambient Temperature Range Internally Limited 40V −55°C ≤ TA ≤ +125°C −55°C ≤ TJ ≤ +150°C Operating Junction Temperature Range −65°C ≤ TA ≤ +150°C 150°C 300°C −41.25V Storage Temperature Maximum Junction Temperature Lead Temperature (Soldering, 10 sec.) Minimum Input Voltage Maximum Power Dissipation (@25°C) T0–3 T0–39 Thermal Resistance 28 Watts 2.5 Watts θJA T0–3 Metal Can (Still Air) T0–3 Metal Can (500LF/Min Air Flow) T0–39 Metal Can (Still Air @ 0.5W) T0–39 Metal Can (500LF/Min Air Flow @ 0.5W) 40°C/W 14°C/W 174°C/W 64°C/W θJC T0–3 T0–39 Metal Can (@ 1.0W) Package Weight (typical) T0–3 T0–39 Metal Can ESD Rating (Note 6) 4°C/W 15°C/W 12,750mg 955mg 4000V Recommended Operating Conditions −55°C ≤ TA ≤ +125°C TA 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 3 www.ti.com LM137QML LM137H 883 Electrical Characteristics DC Parameters The following conditions apply, unless otherwise specified. VIN = −4.25V, IL = 8mA, VOUT = VRef Symbol VRef Parameter Reference Voltage Conditions Notes Max Units -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 VOUT = -1.7V 3.0 mA 1, 2, 3 VOUT = -1.7V, VIN = -11.75V 3.0 mA 1, 2, 3 VOUT = -1.7V, VIN = -42V 5.0 mA 1 VOUT = -1.7V, VIN = -41.3V 5.0 mA 2, 3 VIN = -42V VIN = -41.3V IQ Minimum Load Current RLine RLoad IAdj Line Regulation Load Regulation Adjustment Pin Current Δ IAdj / VLine Adjust Pin Current Change vs. Line Voltage Δ IAdj / ILoad Adjust Pin Current Change vs. Load Current θR Thermal Regulation θJC Thermal Resistance ICL Current Limit VO Output Voltage Subgroups Min -42V ≤ VIN ≤ -4.25V -9.0 9.0 mV 1 -41.3V ≤ VIN ≤ -4.25V -23 23 mV 2, 3 5mA ≤ IL ≤ 500mA, VIN = -6.25V -25 25 mV 1, 2, 3 5mA ≤ IL ≤ 500mA, VIN = -14.5V -25 25 mV 1 5mA ≤ IL ≤ 150mA, VIN = -40V -25 25 mV 1, 2, 3 IL = 5 mA 100 µA 1, 2, 3 VIN = -42V 100 µA 1 VIN = -41.3V 100 µA 2, 3 -42V ≤ VIN ≤ -4.25V, IL = 5 mA -5.0 5.0 µA 1 -41.3V ≤ VIN ≤ -4.25V, IL = 5 mA -5.0 5.0 µA 2, 3 5 mA ≤ IL ≤ 500 mA, VIN = -6.5V -5.0 5.0 µA 1, 2, 3 VIN = -14.5V, IL = 500mA, t = 10mS -5.0 5.0 mV 1 VIN = -14.5V, IL = 5mA, t = 10mS -5.0 5.0 mV 1 15 °C/W 1 (Note 7) VIN = -5V -1.8 -0.5 A 1, 2, 3 VIN = -40V -0.65 -0.15 A 1, 2, 3 -1.28 -1.22 V 1 -1.3 -1.2 V 2, 3 AC Parameters RR www.ti.com Ripple Rejection Ratio VIN = -6.25V, VOUT = VRef, IL = 125mA, eI = 1VRMS, F = 120Hz 4 (Note 5, Note 8) 66 dB 4, 5, 6 LM137QML LM137K 883 Electrical Characteristics DC Parameters The following conditions apply, unless otherwise specified. VIN = −4.25V, IL = 8mA, VOUT = VRef Symbol Parameter Conditions Notes Min Max -1.275 -1.225 VRef Reference Voltage -1.3 VIN = -42V VIN = -41.3V IQ Minimum Load Current -1.3 RLoad IAdj Line Regulation Load Regulation Adjustment Pin Current Subgroups V 1 V 2, 3 V 1 -1.2 V 2, 3 VOUT = -1.7V 3.0 mA 1, 2, 3 VOUT = -1.7V, VIN = -11.75V 3.0 mA 1, 2, 3 VOUT = -1.7V, VIN = -42V 5.0 mA 1 VOUT = -1.7V, VIN = -41.3V RLine -1.2 -1.275 -1.225 Units 5.0 mA 2, 3 -42V ≤ VIN ≤ -4.25V -9.0 9.0 mV 1 -41.3V ≤ VIN ≤ -4.25V -23 23 mV 2, 3 VIN = -6.25V, 8mA ≤ IL ≤ 1.5A -25 25 mV 1, 2, 3 VIN = -14.5V, 8mA ≤ IL ≤ 1.5A -25 25 mV 1 VIN = -40V, 8mA ≤ IL ≤ 300 mA -25 25 mV 1 VIN = -40V, 8mA ≤ IL ≤ 250 mA -25 25 mV 2, 3 100 µA 1, 2, 3 VIN = -42V 100 µA 1 VIN = -41.3V 100 µA 2, 3 Δ IAdj / VLine Adjust Pin Current Change vs. Line Voltage -42V ≤ VIN ≤ -4.25V -5.0 5.0 µA 1 -41.3V ≤ VIN ≤ -4.25V -5.0 5.0 µA 2, 3 Δ IAdj / ILoad Adjust Pin Current Change vs. Load Current 8 mA ≤ IL ≤ 1.5A, VIN = -6.25V -5.0 5.0 µA 1, 2, 3 VRth Thermal Regulation VIN = -14.5V, IL = 1.5mA, t = 10mS -5.0 5.0 mV 1 VIN = -14.5V, IL = 8mA, t = 10mS -5.0 5.0 mV 1 4.0 °C/W 1 VIN = -5V -3.5 -1.5 A 1, 2, 3 VIN = -40V -1.2 -0.24 A 1, 2, 3 Max Units Subgroups dB 4, 5, 6 θJC ICL Thermal Resistance Current Limit (Note 7) AC Parameters Symbol RR Parameter Conditions Ripple Rejection Ratio VIN = -6.25V, VOUT = VRef, f = 120Hz, IL = 0.5A, eI = 1VRMS 5 Notes Min (Note 5, Note 8) 66 www.ti.com LM137QML LM137H RH Electrical Characteristics DC Parameters The following conditions apply, unless otherwise specified. (Note 14) Symbol Parameter Conditions Notes VIN = -4.25V, IL = 5mA VIN = -4.25V, IL = 500mA VOUT Output Voltage VIN = -41.25V, IL = 5mA VIN = -41.25V, IL = 50mA VR Line Line Regulation VIN = -41.25V to -4.25V, IL = 5mA VIN = -6.25V, IL = 5mA to 500mA VR Load Load Regulation VIN = -41.25V, IL = 5mA to 50mA VIN = -6.25V, IL = 5mA to 200mA VRth IAdj Thermal Regulation Adjust Pin Current VIN = -14.6V, IL = 500mA Subgroups Min Max Units -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 -1.275 -1.225 V 1 2, 3 -1.3 -1.2 V -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 -9.0 9.0 mV 1 -23 23 mV 2, 3 -12 12 mV 1 -24 24 mV 2, 3 -6.0 6.0 mV 1 2, 3 -12 12 mV -6.0 6.0 mV 1 -12 12 mV 2, 3 -5.0 5.0 mV 1 VIN = -4.25V, IL = 5mA 25 100 µA 1, 2, 3 VIN = -41.25V, IL = 5mA 25 100 µA 1, 2, 3 Δ IAdj / VLine Adjust Pin Current Change vs. Line Voltage VIN = -41.25V to -4.25V, IL = 5mA -5.0 5.0 µA 1, 2, 3 Δ IAdj / ILoad Adjust Pin Current Change vs. Load Current VIN = -6.25V, IL = 5mA to 500mA -5.0 5.0 µA 1, 2, 3 VIN = -4.25V 0.5 1.8 A 1, 2, 3 VIN = -40V 0.05 0.5 A 1, 2, 3 -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 -1.275 -1.225 V 1 IOS Output Short Circuit Current VOUT Recovery Output Voltage Recovery After Output Short Circuit Current IQ Minimum Load Current VIN = -4.25V VIN = -40V -1.3 -1.2 V 2, 3 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 -1.275 -1.225 V 1 -1.3 -1.2 V 2, 3 -1.3 -1.2 V 2 VStart Voltage Start-up VIN = -4.25V, IL = 500mA VOUT Output Voltage VIN = -6.25V, IL = 5mA www.ti.com 6 (Note 9) The following conditions apply, unless otherwise specified. (Note 14) Symbol ΔVIN / ΔVOUT VNO ΔVOUT / ΔVIN ΔVO / Δ IL Units Subgroups dB 9 120 µVRMS 9 80 mV/V 9 60 mV 9 Min Max Units Subgroups 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 VIN = -41.25V to -4.25V, IL = 5mA -4.0 4.0 mV 1 VIN = -4.25V, IL = 5mA -10 10 µA 1 VIN = -41.25V, IL = 5mA -10 10 µA 1 Parameter Conditions Ripple Rejection VIN = -6.25V, IL = 125mA, eI = 1VRMS at 2400Hz Output Noise Voltage VIN = -6.25V, IL = 50mA Line Transient Response VIN = -6.25V, VPulse = -1V, IL = 50mA Load Transient Response DC Parameters Notes VIN = -6.25V, IL = 50mA, Δ IL = 200mA Min Max 48 (Note 10) Drift Values The following conditions apply, unless otherwise specified. (Note 14) Delta calculations performed on QMLV devices at group B, subgroup 5 only. Symbol VOUT VR Line IAdj Parameter Conditions Output Voltage Line Regulation Adjust Pin Current DC Parameters Notes Post Radiation Limits +25°C 5962P9951701VXA The following conditions apply, unless otherwise specified. (Note 14) Symbol Parameter Conditions Δ IAdj / VLine Adjust Pin Current Change vs. Line Voltage DC Parameters Notes VIN = -41.25V to -4.25V, IL = 5mA Min Max Units Subgroups -20 20 µA 1 Post Radiation Limits +25°C 5962P9951708VXA The following conditions apply, unless otherwise specified. (Note 14) Symbol Parameter VOUT Output Voltage Conditions Min Max Units Subgroups VIN = -41.25V, IL = 5mA -1.30 -1.225 V 1 VIN = -41.25V, IL = 50mA Notes -1.30 -1.225 V 1 -9.0 +50 mV 1 VR Line Line Regulation VIN = -41.25V to -4.25V, IL = 5mA IAdj Adjust Pin Current VIN = -41.25V, IL = 5mA 25 140 µA 1 Δ IAdj / VLine Adjust Pin Current Change vs. Line Voltage VIN = -41.25V to -4.25V, IL = 5mA -70 +20 µA 1 VOUT Recovery Output Voltage Recovery After Output Short Circuit Current VIN = -4.25V -1.30 -1.225 V 1 7 www.ti.com LM137QML AC Parameters LM137QML Note 2: 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 3: 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 4: Group “A” sample only, test at all temps. Note 5: Bench test, refer to (SG)RPI-3-362. Note 6: Human body model, 100pF discharged through 1.5KΩ Note 7: Guaranteed parameter, not tested. Note 8: Test at +25°C, guaranteed but not tested at +125°C and −55°C Note 9: Tested at +125°C ; correlated to +150°C Note 10: Limit of 0.3mV/mA is equivalent to 60mV Note 11: VIN = −41.3V at +125°C and −55°C Note 12: −41.3V ≤ VIN ≤ −4.25V at +125°C and −55°C Note 13: Pre Burn-In stress test per RPI-5-025. Note 14: Pre and post irradiation limits are identical to those listed under AC and DC electrical characteristics except as listed in the Post Radiation Limits Table. These parts may be dose rate sensitive in a space environment and demonstrate enhanced low dose rate effect. Radiation end point limits for the noted parameters are guaranteed only for the conditions as specified in Mil-Std-883, Method 1019.5, Condition A. Schematic Diagram 20122402 www.ti.com 8 When power is dissipated in an IC, a temperature gradient occurs across the IC chip affecting the individual IC circuit components. With an IC regulator, this gradient can be especially severe since power dissipation is large. Thermal regulation is the effect of these temperature gradients on output voltage (in percentage output change) per Watt of power 20122403 LM137, VOUT = −10V VIN − VOUT = −40V IIL = 0A → 0.25A → 0A Vertical sensitivity, 5 mV/div FIGURE 1. In Figure 1, a typical LM137's output drifts only 3 mV (or 0.03% of VOUT = −10V) when a 10W pulse is applied for 10 ms. This performance is thus well inside the specification limit of 0.02%/W × 10W = 0.2% max. When the 10W pulse is ended, the thermal regulation again shows a 3 mV step as the LM137 chip cools off. Note that the load regulation error of about 8 mV (0.08%) is additional to the thermal regulation error. In Figure 2, when the 10W pulse is applied for 100 ms, the output drifts only slightly beyond the drift in the first 10 ms, and the thermal error stays well within 0.1% (10 mV). 20122404 LM137, VOUT = −10V VIN − VOUT = −40V IL = 0A → 0.25A → 0A Horizontal sensitivity, 20 ms/div FIGURE 2. 9 www.ti.com LM137QML change in a specified time. Thermal regulation error is independent of electrical regulation or temperature coefficient, and occurs within 5 ms to 50 ms after a change in power dissipation. Thermal regulation depends on IC layout as well as electrical design. The thermal regulation of a voltage regulator is defined as the percentage change of VOUT, per Watt, within the first 10 ms after a step of power is applied. The LM137's specification is 0.02%/W, max. Thermal Regulation LM137QML −5.2V Regulator with Electronic Shutdown* Typical Applications Adjustable Lab Voltage Regulator 20122410 *Minimum output ″ −1.3V when control input is low Adjustable Current Regulator 20122409 Full output current not available at high input-output voltages *The 10 μF capacitors are optional to improve ripple rejection Current Regulator 20122412 High Stability −10V Regulator 20122411 Negative Regulator with Protection Diodes 20122414 20122413 *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 www.ti.com 10 LM137QML Typical Performance Characteristics (H & K Packages) Load Regulation Current Limit 20122416 20122417 Adjustment Current Dropout Voltage 20122418 20122419 Temperature Stability Minimum Operating Current 20122420 20122421 11 www.ti.com LM137QML Ripple Rejection Ripple Rejection 20122422 20122423 Ripple Rejection Output Impedance 20122424 20122425 Line Transient Response Load Transient Response 20122426 www.ti.com 20122427 12 Date Released 12/08/2010 03/16/2012 Revision Section Changes A New Release, Corporate format 3 MDS data sheets converted into one Corp. data sheet format. MNLM137-X, Rev. 0B1, MNLM137K Rev. 0A0, and MRLM137–X-RH Rev. 2A0. MDS data sheets will be archived. B Ordering Information, LM137K 883 Electrical Characteristics DC Parameters., LM137H RH Electrical Characteristics DC Parameters., DC Parameters Post Radiation Limits +25 Deg. C for 701VXA., DC Parameters Post Radiation Limits +25 Deg. C for 708VXA Ordering Info — Added new LM137H1PQMLV., For the DC Parameters of LM137K 883 and LM137 RH, widened columns to accommodate correct limits. Added to the HEADER of DC Parameters — Post Radiation Limits 5962P9951701VXA. Added the HEADER and TABLE of DC Parameters — Post Radiation Limits 5962P9951708VXA. Rev A will be archived. 13 www.ti.com LM137QML Revision History LM137QML Physical Dimensions inches (millimeters) unless otherwise noted Metal Can Package (H) NS Package Number H03A Metal Can Package (K) NS Package Number K02C www.ti.com 14 LM137QML Notes 15 www.ti.com LM137QML 3-Terminal Adjustable Negative Regulators Notes www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. 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