LM120

LM120 LM320 Series 3-Terminal Negative Regulators November 1994 LM120 LM320 Series 3-Terminal Negative Regulators General Description The LM120 series are three-terminal negative regulators with a fixed output voltage of b5V b12V and b15V and up to 1 5A load current capability Where other voltages are required the LM137 and LM137HV series provide an output voltage range of b1 2V to b47V The LM120 need only one external component a compensation capacitor at the output making them easy to apply Worst case guarantees on output voltage deviation due to any combination of line load or temperature variation assure satisfactory system operation Exceptional effort has been made to make the LM120 Series immune to overload conditions The regulators have current limiting which is independent of temperature combined with thermal overload protection Internal current limiting protects against momentary faults while thermal shutdown prevents junction temperatures from exceeding safe limits during prolonged overloads Although primarily intended for fixed output voltage applications the LM120 Series may be programmed for higher output voltages with a simple resistive divider The low quiescent drain current of the devices allows this technique to be used with good regulation Features Y Y Y Y Y Y Y Preset output voltage error less than g 3% Preset current limit Internal thermal shutdown Operates with input-output voltage differential down to 1V Excellent ripple rejection Low temperature drift Easily adjustable to higher output voltage LM120 Series Packages and Power Capability Device LM120 LM320 LM320 LM320M Package TO-3 (K) TO-39 (H) TO-220 (T) TO-202 (P) Rated Power Dissipation 20W 2W 15W 7 5W Design Load Current 1 5A 0 5A 1 5A 0 5A Typical Applications Dual Trimmed Supply Fixed Regulator TL H 7767 – 2 Required if regulator is separated from filter capacitor by more than 3 For value given capacitor must be solid tantalum 25 mF aluminum electrolytic may be substituted Required for stability For value given capacitor must be solid tantalum 25 mF aluminum electrolytic may substituted Values given may be increased without limit For output capacitance in excess of 100 mF a high current diode from input to output (1N4001 etc ) will protect the regulator from momentary input shorts TL H 7767–3 C1995 National Semiconductor Corporation TL H 7767 RRD-B30M115 Printed in U S A b 5 Volt Regulators (Note 3) Input-Output Voltage Differential Junction Temperatures Storage Temperature Range Lead Temperature (Soldering 10 sec ) Plastic 300 C 260 C b 65 C to a 150 C Absolute Maximum Ratings 25V See Note 1 If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications (Note 5) Power Dissipation Internally Limited b 25V Input Voltage Electrical Characteristics Metal Can Package Order Numbers LM120K-5 0 (TO-3) 1 5A 20W Min b5 1 b5 b4 9 b5 2 b5 b4 8 b5 1 b5 b4 9 b5 2 Power Plastic Package LM320H-5 0 (TO-39) 0 5A 2W Max Min Typ b5 LM320K-5 0 (TO-3) 1 5A 20W 0 5A 2W Max Min Typ LM120H-5 0 (TO-39) LM320T-5 0 (TO-220) 1 5A 15W Design Output Current (ID) Device Dissipation (PD) Typ Max Min Typ Units Parameter Max b4 8 Min b5 2 Typ b5 Max b4 8 Output Voltage TJ e 25 C ILOAD e 5 mA VMIN s VIN s VMAX b 25 b7 b 25 b7 b 25 b7 Conditions (Note 1) TJ e 25 C VIN e 10V ILOAD e 5 mA 10 25 10 40 10 25 bb 25 V 10 40 b7 b 25 Line Regulation 10 40 b7 5 mV V 54 64 54 64 dB 2 f e 120 Hz TJ e 25 C VIN e 10V 5 mA s ILOAD s ID 50 b 5 20 b 4 80 b 5 25 b 4 75 b 5 20 Input Voltage 54 75 60 100 30 64 54 64 54 64 Ripple Rejection Load Regulation (Note 2) b 7 5V s VIN s VMAX 50 b 4 80 b 5 25 30 50 b 4 75 b 5 25 50 100 b 4 75 mV V 1 0 05 0 04 150 2 04 04 1 0 05 0 04 150 2 04 04 1 01 01 150 04 04 mA mA mA mV Output Voltage (Note 1) 5 mA s ILOAD s ID P s PD VMIN s VIN s VMAX TJ e 25 C VMIN s VIN s VMAX 5 mA s ILOAD s ID 01 01 150 5 3 35 50 150 5 50 3 35 04 04 01 01 TA e 25 C CL e 1 mF IL e 5 mA VIN e 10V 10 Hz s f s 100 kHz 04 04 1 2 1 2 Quiescent Current Quiescent Current Change Output Noise Voltage Long Term Stability 5 50 Note 4 Note 4 5 50 Note 4 Note 4 10 4 50 mV CW CW Thermal Resistance Junction to Case Junction to Ambient Note 1 This specification applies over b 55 C s TJ s a 150 C for the LM120 and 0 C s TJ s a 125 C for the LM320 Note 2 Regulation is measured at constant junction temperature Changes in output voltage due to heating effects must be taken into account separately To ensure constant junction temperature low duty cycle pulse testing is used The LM120 LM320 series does have low thermal feedback improving line and load regulation On all other tests even though power dissipation is internally limited electrical specifications apply only up to PD Note 3 For b 5V 3 amp regulators see LM145 data sheet Note 4 Thermal resistance of typically 85 C W (in 400 linear feet air flow) 224 C W (in static air) junction to ambient of typically 21 C W junction to case Note 5 Refer to RETS120-5H drawing for LM120H-5 0 or RETS120-5K drawing for LM120-5K military specifications b 12 Volt Regulators Input-Output Voltage Differential Junction Temperatures Storage Temperature Range Lead Temperature (Soldering 10 sec ) 30V See Note 1 b 65 C to a 150 C 300 C Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications (Note 4) Power Dissipation Internally Limited b 35V Input Voltage Electrical Characteristics Metal Can Package Order Numbers LM120K-12 (TO-3) 1A 20W Min Typ Max Min Typ Max Min Typ Max Min 1A 20W 0 2A 2W 0 2A 2W Typ Max Min LM320K-12 (TO-3) LM120H-12 (TO-39) Design Output Current (ID) Device Dissipation (PD) LM320H-12 (TO-39) Power Plastic Package LM320T-12 (TO-220) 1A 15W Typ b 12 Units Parameter Max b 11 6 Output Voltage TJ e 25 C ILOAD e 5 mA VMIN s VIN s VMAX b 32 b 14 b 32 b 14 b 32 Conditions (Note 1) TJ e 25 C VIN e 17V ILOAD e 5 mA 4 10 4 20 4 10 b 14 b 12 3 b 12 b 11 7 b 12 4 b 12 b 11 6 b 12 3 b 12 b 11 7 b 12 4 b 12 b 11 6 b 12 4 V 4 b 32 Line Regulation 20 b 14 b 32 4 20 b 14 5 mV V 3 f e 120 Hz TJ e 25 C VIN e 17V 5 mA s ILOAD s ID 30 b 12 5 b 11 5 b 12 6 Input Voltage 56 80 30 80 b 11 4 b 12 5 Ripple Rejection 80 56 80 56 80 10 25 56 80 10 b 11 5 b 12 6 56 40 b 11 4 b 12 6 80 30 80 b 11 4 dB mV V Load Regulation (Note 2) Output Voltage (Note 1) 2 01 01 400 12 120 3 35 04 04 01 01 400 12 4 2 Quiescent Current TJ e 25 C VMIN s VIN s VMAX 5 mA s ILOAD s ID TA e 25 C CL e 1 mF IL e 5 mA VIN e 17V 10 Hz s f s 100 kHz 14 5V s VIN s VMAX 5 mA s ILOAD s ID P s PD VMIN s VIN s VMAX 4 04 04 2 0 05 0 03 400 120 3 35 12 4 04 04 2 0 05 0 03 400 120 Note 3 Note 3 12 4 04 04 2 01 01 400 120 Note 3 Note 3 24 4 50 4 04 04 mA mA mA mV mV CW CW Quiescent Current Change Output Noise Voltage Long Term Stability Thermal Resistance Junction to Case Junction to Ambient Note 1 This specification applies over b 55 C s TJ s a 150 C for the LM120 and 0 C s TJ s a 125 C for the LM320 Note 2 Regulation is measured at constant junction temperature Changes in output voltage due to heating effects must be taken into account separately To ensure constant junction temperature low duty cycle pulse testing is used The LM120 LM320 series does have low thermal feedback improving line and load regulation On all other tests even though power dissipation is internally limited electrical specifications apply only up to PD Note 3 Thermal resistance of typically 85 C W (in 400 linear feet min air flow) 224 C W (in static air) junction to ambient of typically 21 C W junction to case Note 4 Refer to RETS120H-12 drawing for LM120H-12 or RETS120-12K drawing for LM120K-12 military specifications b 15 Volt Regulators Input-Output Voltage Differential Junction Temperatures Storage Temperature Range Lead Temperature (Soldering 10 sec ) 300 C b 65 C to a 150 C Absolute Maximum Ratings 30V See Note 1 If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications (Note 4) Power Dissipation Internally Limited Input Voltage b 40V LM120 LM320 b 35V LM320T Electrical Characteristics Metal Can Package Order Numbers LM120K-15 (TO-3) 1A 20W Min Typ Max Min Typ Max Min Typ Max Min 1A 20W 0 2A 2W 0 2A 2W Typ Max Min LM320K-15 (TO-3) LM120H-15 (TO-39) LM320H-15 (TO-39) Design Output Current (ID) Device Dissipation (PD) Power Plastic Package LM320T-15 (TO-220) 1A 15W Typ b 15 Units Max b 14 5 Parameter Output Voltage TJ e 25 C ILOAD e 5 mA VMIN s VIN s VMAX 5 b 35 b 17 b 35 b 17 b 35 Conditions (Note 1) TJ e 25 C VIN e 20V ILOAD e 5 mA 10 5 20 5 10 b 17 b 35 b 15 3 b 15 b 14 7 b 15 4 b 15 b 14 6 b 15 3 b 15 b 14 7 b 15 4 b 15 b 14 6 b 15 5 V 5 20 b 17 b 35 Line Regulation 4 f e 120 Hz TJ e 25 C VIN e 20V 5 mA s ILOAD s ID 30 b 15 5 b 14 5 b 15 6 5 20 b 17 5 mV V 56 80 56 80 dB Input Voltage 56 80 30 80 b 14 4 b 15 5 Ripple Rejection 80 56 80 56 80 10 25 Load Regulation (Note 2) 17 5V s VIN s VMAX 5 mA s ILOAD s ID P s PD VMIN s VIN s VMAX TJ e 25 C VMIN s VIN s VMAX 5 mA s ILOAD s ID 01 01 400 15 3 35 150 04 04 01 01 400 15 150 3 35 TA e 25 C CL e 1 mF IL e 5 mA VIN e 20V 10 Hz s f s 100 kHz 2 4 2 4 04 04 10 b 14 5 b 15 6 40 b 14 4 b 15 7 30 80 b 14 3 mV V 2 0 05 0 03 400 15 150 Note 3 Note 3 4 04 04 2 0 05 0 03 400 15 150 Note 3 Note 3 4 04 04 2 01 01 400 30 4 50 4 04 04 mA mA mA mV mV CW CW Output Voltage (Note 1) Quiescent Current Quiescent Current Change Output Noise Voltage Long Term Stability Thermal Resistance Junction to Case Junction to Ambient Note 1 This specification applies over b 55 C s TJ s a 150 C for the LM120 and 0 C s TJ s a 125 C for the LM320 Note 2 Regulation is measured at constant junction temperature Changes in output voltage due to heating effects must be taken into account separately To ensure constant junction temperature low duty cycle pulse testing is used The LM120 LM320 series does have low thermal feedback improving line and load regulation On all other tests even though power dissipation is internally limited electrical specifications apply only up to PD Note 3 Thermal resistance of typically 85 C W (in 400 linear feet min air flow) 224 C W (in static air) junction to ambient of typically 21 C W junction to case Note 4 Refer to RETS120-15H drawing for LM120H-15 or RETS120-15K drawing for LM120K-15 military specifications Typical Performance Characteristics Output Voltage vs Temperature Ripple Rejection (All Types) Output Impedance TO-3 and TO-220 Packages Output Impedance TO-5 and TO-202 Packages Minimum Input-Output Differential TO-3 and TO-220 Packages Minimum Input-Output Differential TO-5 and TO-202 Packages Quiescent Current vs Input Voltage Quiescent Current vs Load Current Maximum Average Power Dissipation (TO-3) TL H 7767 – 4 These curves for LM120 Derate 25 C further for LM320 5 Typical Performance Characteristics Maximum Average Power Dissipation (TO-5) (Continued) Maximum Average Power Dissipation (TO-220) Maximum Average Power Dissipation (TO-202) Short Circuit Current TL H 7767 – 5 Typical Applications (Continued) High Stability 1 Amp Regulator TL H 7767 – 6 Lead and line regulation Determines Zener current Solid tantalum 0 01% temperature stability 0 2% An LM120-12 or LM120-15 may be used to permit higher input voltages but the regulated output voltage must be at least b 15V when using the LM120-12 and b 18V for the LM120-15 Select resistors to set output voltage 2 ppm C tracking suggested 6 Typical Applications (Continued) Wide Range Tracking Regulator Current Source IOUT e 1 mA a 5 0V R1 TL H 7767 – 8 TL H 7767 – 7 Resistor tolerance of R1 and R2 determine matching of ( a ) and ( b ) inputs Necessary only if raw supply capacitors are more than 3 from regulators An LM3086N array may substitute for Q1 D1 and D2 for better stability and tracking In the array diode transistors Q5 and Q4 (in parallel) make up D2 similarly Q1 and Q2 become D1 and Q3 replaces the 2N2222 g 15V 1 Amp Tracking Regulators Variable Output TL H 7767 – 9 Performance (Typical) Load Regulation at DIL e 1A Output Ripple CIN e 3000 mF IL e 1A Temperature Stability Output Noise 10 Hz s f s 10 kHz 10 mV 100 mVrms a 50 mV 150 mVrms TL H 7767 – 12 Optional Improves transient response and ripple rejection VOUT e VSET R1 a R2 R2 b 300X b 750X b 1k SELECT R2 AS FOLLOWS LM120-5 LM120-12 LM120-15 1 mV 100 mVrms a 50 mV 150 mVrms Resistor tolerance of R4 and R5 determine matching of ( a ) and ( b ) outputs Necessary only if raw supply filter capacitors are more than 2 from regulators Light Controllers Using Silicon Photo Cells TL H 7767 – 11 Lamp brightness increases until iI e iQ (1 mA) a 5V R1 TL H 7767 – 10 Necessary only if raw supply filter capacitor is more than 2 from LM320 Lamp brightness increases until iI e 5V R1 (iI can be set as low as 1 mA) Necessary only of raw supply filter capacitor is more than 2 LM320MP from 7 Connection Diagrams TL H 7767–13 Bottom View Metal Can Package TO-39 (H) Order Number LM120H-5 0 LM120H-12 LM120H-15 LM120H-5 0 883 LM120H-12 883 LM120H-15 883 LM320H-5 0 LM320H-12 or LM320H-15 See NS Package Number H03A Bottom View TL H 7767 – 14 Steel Metal Can Package TO-3 (K) Order Number LM120K-5 0 883 LM120K-12 883 LM120K-15 883 LM320K-5 0 LM320K-12 or LM320K-15 See NS Package Number K02A TL H 7767 – 17 Front View Power Package TO-220 (T) Order Number LM320T-5 0 LM320T-12 or LM320T-15 See NS Package Number T03B Schematic Diagrams b 5V TL H 7767 – 18 8 Schematic Diagrams (Continued) b 12V and b 15V TL H 7767 – 19 Physical Dimensions inches (millimeters) Metal Can Package (TO-39) (H) Order Number LM120H-5 0 LM120H-12 LM120H-15 LM320H-5 0 LM320H-12 or LM320H-15 NS Package Number H03A 9 Physical Dimensions inches (millimeters) (Continued) Steel Metal Can Package TO-3 (K) Order Number LM120K-5 0 LM120K-12 LM120K-15 LM320K-5 0 LM320K-12 or LM320K-15 NS Package Number K02A Aluminum Metal Can Package TO-3 (KC) Order Number LM320KC-5 0 LM320KC-12 or LM320KC-15 NS Package Number KC02A 10 Physical Dimensions inches (millimeters) (Continued) Power Package TO-202 (P) Order Number LM320MP-5 0 LM320MP-12 or LM320MP-15 NS Package Number P03A 11 LM120 LM320 Series 3-Terminal Negative Regulators Physical Dimensions inches (millimeters) (Continued) Power Package TO-220 (T) Order Number LM320T-5 0 LM320T-12 or LM320T-15 NS Package Number T03B LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which (a) are intended for surgical implant into the body or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a 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