LM137HVQML LM137HVQML 3-Terminal Adjustable Negative Regulators (High Voltage) Literature Number: SNVS314 LM137HVQML 3-Terminal Adjustable Negative Regulators (High Voltage) General Description Features The LM137HV is an adjustable 3-terminal negative voltage regulator capable of supplying in excess of −1.5A over an output voltage range of −47V to −1.2V. This regulators is 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 LM137HV features internal current limiting, thermal shutdown and safe-area compensation, making them virtually blowoutproof against overloads. The LM137HV serves a wide variety of applications including local on-card regulation, programmable-output voltage regulation or precision current regulation. The LM137HV is an ideal complement to the LM117HV adjustable positive regulator. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Output voltage adjustable from −47V to −1.2V 1.5A output current guaranteed, −55°C ≤ TJ ≤ +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 short circuit protected Ordering Information NS Part Number SMD Part Number NS Package Number LM137HVH/883 H03A LM137HVK MD8 (Note 1) Package Description T0–39 Metal Can Bare Die Note 1: FOR ADDITIONAL DIE INFORMATION, PLEASE VISIT THE HI REL WEB SITE AT: www.national.com/analog/space/level_die © 2010 National Semiconductor Corporation 201225 www.national.com LM137HVQML 3-Terminal Adjustable Negative Regulators (High Voltage) December 16, 2010 LM137HVQML Connection Diagrams See Physical Dimensions section for further information TO-39 Metal Can Package TO-3 Metal Can Package 20122506 Bottom View See NS Package Number H03A 20122505 Bottom View See NS Package Number K02C Typical Applications Adjustable Negative Voltage Regulator 20122501 20122525 †C1 = 1 μF solid tantalum or 10 μF aluminum electrolytic required for stability. 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. *C2 = 1 μF solid tantalum is required only if regulator is more than 4″ from power-supply filter capacitor. www.national.com 2 LM137HVQML Absolute Maximum Ratings (Note 2) Power Dissipation(Note 3) Input—Output Voltage Differential Operating Ambient Temperature Range Internally limited 50V −55°C ≤ TA ≤ +125°C +150°C Maximum Junction Temperature Range Storage Temperature −65°C ≤ TA ≤ +150°C 300°C Lead Temperature (Soldering, 10 sec.) Thermal Resistance θJA H-pkg. (Still Air @ 0.5W) H-pkg. (500LF / Min Air Flow @ 0.5W) K-pkg. (Still Air @ 0.5W) K-pkg. (500LF / Min Air Flow @ 0.5W) 174°C/W 64°C/W 42°C/W 14°C/W θJC H-pkg. (@ 1.0W) K-pkg. Package Weight (Typical) H-pkg. K-pkg ESD Rating(Note 4) 15°C/W 4°C/W 955mg 12,750mg 4000V Quality Conformance Inspection Mil-Std-883, Method 5004 and Method 5005 Subgroup Description Temp (°C) 1 Static tests at +25°C 2 Static tests at +125°C 3 Static tests at -55°C 4 Dynamic tests at +25°C 5 Dynamic tests at +125°C 6 Dynamic tests at -55°C 7 Functional tests at +25°C 8A Functional tests at +125°C 8B Functional tests at -55°C 9 Switching tests at +25°C 10 Switching tests at +125°C 11 Switching tests at -55°C 3 www.national.com LM137HVQML LM137HVH 883 Electrical Characteristics DC Parameters The following conditions apply, unless otherwise specified. VIN = −4.0V, IO = 0.53A, VO = VRef Symbol Parameter Conditions Notes VRef Unit -1.272 -1.23 V 1 -1.28 -1.225 V 2, 3 -1.272 -1.23 V 1 -1.28 -1.225 V 2, 3 VO = -1.7V, VIN = -4.25V 3.0 mA 1, 2, 3 VO = -1.7V, VIN = -11.75V 3.0 mA 1, 2, 3 VO = -1.7V, VIN = -42V 5.0 mA 1, 2, 3 -42V ≤ VIN ≤ -4.25V, IO = 8mA 9.4 mV 1, 2, 3 VIN = -42V, IO = 8mA 100 µA 1, 2, 3 VIN = -4.25V, IO = 8mA 100 µA 1, 2, 3 VIN = -54V, IO = 8mA 100 µA 1 Reference Voltage VIN = -42V, IO = 8mA IQ Minimum Load Current RLine Line Regulation IAdj Adjustment Pin Current ΔIAdj Adjustment Pin Current Change -42V ≤ VIN ≤ -4.25V, IL = 8mA RLoad Load Regulation VRth Thermal Regulation ICL Current Limit Subgroups Max VIN = -4.25V, IO = 8 mA Min 6.0 µA 1, 2, 3 VIN = -6.25V, 8mA ≤ IO ≤ 0.53A 5.0 µA 1, 2, 3 -54V ≤ VIN ≤ -4.25V, IO = 8mA 6.0 µA 1 VIN = -54V, 10mA ≤ IO ≤ 60mA 25 mV 1 VIN = -6.25V, 8mA ≤ IO ≤ 0.53A 25 mV 1 IO = 0.53A, VIN = -14.5V 5 mV 1 VIN ≤ -14.25 (Note 5) 0.5 1.6 A 1 VIN = -51.25V (Note 5) 0.1 0.5 A 1 AC Parameters Symbol RR Parameter Ripple Rejection www.national.com Conditions Notes VIN = -6.25V, VO = VRef, f = 120Hz, (Note 6, eI = 1VRMS, IL = 125mA Note 7) 4 Min Max Unit Subgroups 66 dB 4, 5, 6 883 Electrical Characteristics DC Parameters The following conditions apply, unless otherwise specified. VIN = −40V, IL = 8.0mA, VO = VRef = −1.25V (nominal) Symbol Parameter Conditions Notes VIN = -4.25V VRef Reference Voltage RLine Line Regulation RLoad Load Regulation VRth IAdj ΔIAdj IQ Thermal Regulation Adjustment Pin Current Adjustment Pin Current Change Minimum Load Current Min Unit 1.272 -1.23 V 1 -1.28 -1.225 V 2, 3 VIN = -42V -1.272 -1.23 V 1 VIN = -41.3V -1.28 -1.225 V 2, 3 -42V ≤ VIN ≤ -4.25V 9.4 mV 1 -41.3V ≤ VIN ≤ -4.25V 9.4 mV 2, 3 VIN = -54V, 10mA ≤ IO ≤ 110mA -25 25 mV 1 VIN = -6.25V, 8mA ≤ IO ≤ 1.5A -25 25 mV 1, 2, 3 IO = 1.5A, VIN = -14.5V, t = 10mS -5.0 5.0 mV 1 VIN = -42V 100 µA 1 VIN = -41.3V 100 µA 2, 3 VIN = -4.25V 100 µA 1, 2, 3 VIN = -54V 100 µA 1 -42V ≤ VIN ≤ -4.25V -5.0 5.0 µA 1 -41.3V ≤ VIN ≤ -4.25V -5.0 5.0 µA 2, 3 -54V ≤ VIN ≤ -4.25V -6.0 6.0 µA 1 VIN = -6.25V, 8mA ≤ IO ≤ 1.5A -5.0 5.0 µA 1, 2, 3 VO = 1.7V, VIN = -4.25V 3.0 mA 1, 2, 3 VO = -1.7V, VIN = -11.75V 3.0 mA 1, 2, 3 VO = -1.7V, VIN = -42V 5.0 mA 1 2, 3 VO = -1.7V, VIN = -41.3V ISC Short Circuit Subgroups Max VIN = -5V VIN = -51.25V (Note 5) 5.0 mA -2.85 -1.6 A 1 -3.5 -1.6 A 2, 3 -0.8 -0.2 A 1 AC Parameters: The following conditions apply, unless otherwise specified. VIN = −40V, IL = 8.0mA, VO = VRef = −1.25V (nominal) Symbol RR Parameter Ripple Rejection Conditions VIN = -6.25V, VO = VRef, f = 120Hz, ein = 1V RMS, IL = 0.5A Notes (Note 6, Note 7) Min 66 Max Unit Subgroups dB 4, 5, 6 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: Human body model, 100pF discharged through 1.5KΩ Note 5: Guaranteed parameter not tested. Note 6: Tested at +25°C, guaranteed, but not tested at +125°C and −55°C Note 7: Bench test per (SG)RPI-3–362 Use TDN 70256657 (NSSG) Note 8: Group “A” sample only, test at all temperature. 5 www.national.com LM137HVQML LM137HVK www.national.com 6 Schematic Diagram 20122502 LM137HVQML 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 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 20122503 LM137HV, VOUT = −10V VIN−VOUT = −40V IL = 0A→0.25A→0A Vertical sensitivity, 5 mV/div FIGURE 1. 20122504 LM137HV, VOUT = −10V VIN−VOUT = −40V IL = 0A→0.25A→0A Horizontal sensitivity, 20 ms/div FIGURE 2. 7 www.national.com LM137HVQML the first 10 ms after a step of power is applied. The LM137HV's specification is 0.02%/W, max. In Figure 1, a typical LM137HV'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 x 10W = 0.2% max. When the 10W pulse is ended, the thermal regulation again shows a 3 mV step as the LM137HV 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). Thermal Regulation LM137HVQML Typical Applications Adjustable High Voltage Regulator 20122507 Full output current not available at high input-output voltages *The 10 μF capacitors are optional to improve ripple rejection Current Regulator Negative Regulator with Protection Diodes 20122508 20122510 *When CL is larger than 20 μF, D1 protects the LM137HV in case the input supply is shorted **When C2 is larger than 10 μF and −VOUT is larger than −25V, D2 protects the LM137HV is case the output is shorted Adjustable Current Regulator High Stability −40V Regulator 20122511 *Use resistors with good tracking TC < 25 ppm/°C 20122509 www.national.com 8 LM137HVQML Typical Performance Characteristics (H and K-STEEL Package) Load Regulation Current Limit 20122514 20122513 Adjustment Current Dropout Voltage 20122515 20122516 Temperature Stability Minimum Operating Current 20122517 20122518 9 www.national.com LM137HVQML Ripple Rejection Ripple Rejection 20122519 20122520 Ripple Rejection Output Impedance 20122521 20122522 Line Transient Response Load Transient Response 20122523 www.national.com 20122524 10 Date Released 12/16/2010 Revision A Section Changes New Release, Corporate format 11 2 MDS data sheets converted into one Corp. Data sheet format. 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