LM120, LM320-N
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SNVS756C –APRIL 1998–REVISED APRIL 2013
LM120/LM320-N Series 3-Terminal Negative Regulators
Check for Samples: LM120,LM320-N
Exceptional effort has been made to make the LM120
1FEATURES Series immune to overload conditions. The regulators
2• Preset Output Voltage Error Less than ±3% have current limiting which is independent of
• Preset Current Limit temperature, combined with thermal overload
protection. Internal current limiting protects against
• Internal Thermal Shutdown momentary faults while thermal shutdown prevents
• Operates with Input-Output Voltage Differential junction temperatures from exceeding safe limits
down to 1V during prolonged overloads.
• Excellent Ripple Rejection Although primarily intended for fixed output voltage
• Low Temperature Drift applications, the LM120 Series may be programmed
• Easily Adjustable to Higher Output Voltage 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
DESCRIPTION regulation.
The LM120 series are three-terminal negative
regulators with a fixed output voltage of −5V, −12V, Table 1. LM120 Series Packages and Power
and −15V, and up to 1.5A load current capability. Capability
Where other voltages are required, the LM137 and Device Package Rated Power Design
LM137HV series provide an output voltage range of Dissipation Load
−1.2V to −47V. Current
The LM120 need only one external component—a LM120/LM320- TO-3 (NDS) 20W 1.5A
compensation capacitor at the output, making them N
easy to apply. Worst case specifications on output TO (NDT) 2W 0.5A
voltage deviation due to any combination of line, load LM320-N TO-220 (NDE) 15W 1.5A
or temperature variation assure satisfactory system
operation.
Typical Applications
*Required if regulator is separated from
filter capacitor by more than 3 inches. For
value given, capacitor must be solid
tantalum. 25 μF aluminum electrolytic may
be substituted.
†Required for stability. For value given,
capacitor must be solid tantalum. 25 μF
aluminum electrolytic may be substituted.
Values given may be increased without
limit.
For output capacitance in excess of 100
μF, a high current diode from input to
output (1N4001, etc.) will protect the
regulator from momentary input shorts.
Figure 1. Dual Trimmed Supply Figure 2. Fixed Regulator
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 1998–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
LM120, LM320-N
SNVS756C –APRIL 1998–REVISED APRIL 2013
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS−5 VOLT REGULATORS(1)(2)(3)
Power Dissipation Internally Limited
Input Voltage −25V
Input-Output Voltage Differential 25V
Junction Temperatures (4)
Storage Temperature Range −65°C to +150°C
Lead Temperature
(Soldering, 10 sec.) 300°C
Plastic 260°C
(1) Refer to RETS120-5H drawing for LM120H-5.0 or RETS120-5K drawing for LM120-5K military specifications.
(2) For −5V 3 amp regulators, see LM145 data sheet.
(3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(4) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
LM120K-5.0 AND LM320K-5.0 ELECTRICAL CHARACTERISTICS(1)
Metal Can Package
Order Numbers LM120K-5.0 LM320K-5.0
(TO-3) (TO-3) Units
Design Output Current (ID) 1.5A
Device Dissipation (PD) 20W
Parameter Conditions (2) Min Typ Max Min Typ Max
Output Voltage TJ= 25°C, VIN =10V, −5.1 −5−4.9 −5.2 −5−4.8 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 10 25 10 40 mV
VMIN ≤VIN ≤VMAX
Input Voltage −25 −7−25 −7 V
Ripple Rejection f = 120 Hz 54 64 54 64 dB
Load Regulation, TJ= 25°C, VIN = 10V, 50 75 60 100 mV
(3) 5 mA ≤ILOAD ≤ID
Output Voltage, −7.5V ≤VIN ≤VMAX,−5.20 −4.80 −5.25 −4.75 V
(2) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 1 2 1 2 mA
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.1 0.4 0.1 0.4 mA
5 mA ≤ILOAD ≤ID0.1 0.4 0.1 0.4 mA
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 150 150 μV
VIN = 10V, 10 Hz ≤f≤100 kHz
Long Term Stability 5 50 5 50 mV
Thermal Resistance
Junction to Case 3 3 °C/W
Junction to Ambient 35 35 °C/W
(1) For −5V 3 amp regulators, see LM145 data sheet.
(2) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(3) 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-N 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.
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SNVS756C –APRIL 1998–REVISED APRIL 2013
LM120H-5.0 ELECTRICAL CHARACTERISTICS(1)
Metal Can Package
Order Numbers LM120H-5.0
(TO) Units
Design Output Current (ID) 0.5A
Device Dissipation (PD) 2W
Parameter Conditions (2) Min Typ Max
Output Voltage TJ= 25°C, VIN =10V, −5.1 −5−4.9 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 10 25 mV
VMIN ≤VIN ≤VMAX
Input Voltage −25 −7 V
Ripple Rejection f = 120 Hz 54 64 dB
Load Regulation, TJ= 25°C, VIN = 10V, 30 50 mV
(3) 5 mA ≤ILOAD ≤ID
Output Voltage, −7.5V ≤VIN ≤VMAX,−5.20 −4.80 V
(4) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 1 2 mA
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.05 0.4 mA
5 mA ≤ILOAD ≤ID0.04 0.4 mA
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 150 μV
VIN = 10V, 10 Hz ≤f≤100 kHz
Long Term Stability 5 mV
Thermal Resistance
Junction to Case (5) °C/W
Junction to Ambient (5) °C/W
(1) For −5V 3 amp regulators, see LM145 data sheet.
(2) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(3) 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-N 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.
(4) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(5) 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.
ABSOLUTE MAXIMUM RATINGS−12 VOLT REGULATORS(1)(2)
Power Dissipation Internally Limited
Input Voltage −35V
Input-Output Voltage Differential 30V
Junction Temperatures (3)
Storage Temperature Range −65°C to +150°C
Lead Temperature
(Soldering, 10 sec.) 300°C
(1) Refer to RETS120H-12 drawing for LM120H-12 or RETS120-12K drawing for LM120K-12 military specifications.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
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LM120K-12 ELECTRICAL CHARACTERISTICS Metal Can Package
Order Numbers Units
LM120K-12
(TO-3)
Design Output Current (ID) 1A
Device Dissipation (PD) 20W
Parameter Conditions (1) Min Typ Max
Output Voltage TJ= 25°C, VIN = 17V, −12.3 −12 −11.7 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 4 10 mV
VMIN ≤VIN ≤VMAX
Input Voltage −32 −14 V
Ripple Rejection f = 120 Hz 56 80 dB
Load Regulation, TJ= 25°C, VIN = 17V, 30 80 mV
(2) 5 mA ≤ILOAD ≤ID
Output Voltage, 14.5V ≤VIN ≤VMAX,−12.5 −11.5 V
(3) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 2 4 mA
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.1 0.4 mA
5 mA ≤ILOAD ≤ID0.1 0.4 mA
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 400 μV
VIN = 17V, 10 Hz ≤f≤100 kHz
Long Term Stability 12 120 mV
Thermal Resistance
Junction to Case 3 °C/W
Junction to Ambient 35 °C/W
(1) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(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-N 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.
(3) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
LM120H-12 ELECTRICAL CHARACTERISTICS Metal Can Package
Order Numbers LM120H-12
(TO) Units
Design Output Current (ID) 0.2A
Device Dissipation (PD) 2W
Parameter Conditions (1) Min Typ Max
Output Voltage TJ= 25°C, VIN = 17V, −12.3 −12 −11.7 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 4 10 mV
VMIN ≤VIN ≤VMAX
Input Voltage −32 −14 V
Ripple Rejection f = 120 Hz 56 80 dB
Load Regulation, TJ= 25°C, VIN = 17V, 10 25 mV
(1) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
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SNVS756C –APRIL 1998–REVISED APRIL 2013
LM120H-12 ELECTRICAL CHARACTERISTICS (continued) Metal Can Package
Order Numbers LM120H-12
(TO) Units
Design Output Current (ID) 0.2A
Device Dissipation (PD) 2W
Parameter Conditions (1) Min Typ Max
(2) 5 mA ≤ILOAD ≤ID
Output Voltage, 14.5V ≤VIN ≤VMAX,−12.5 −11.5 V
(1) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 2 4 mA
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.05 0.4 mA
5 mA ≤ILOAD ≤ID0.03 0.4 mA
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 400 μV
VIN = 17V, 10 Hz ≤f≤100 kHz
Long Term Stability 12 120 mV
Thermal Resistance
Junction to Case (3) °C/W
Junction to Ambient (3) °C/W
(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-N 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.
(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.
LM320T-12 ELECTRICAL CHARACTERISTICS Power Plastic Package
Order Numbers LM320T-12
(TO-220) Units
Design Output Current (ID) 1A
Device Dissipation (PD) 15W
Parameter Conditions (1) Min Typ Max
Output Voltage TJ= 25°C, VIN = 17V, −12.4 −12 −11.6 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 4 20 mV
VMIN ≤VIN ≤VMAX
Input Voltage −32 −14.5 V
Ripple Rejection f = 120 Hz 56 80 dB
Load Regulation, TJ= 25°C, VIN = 17V, 30 80 mV
(2) 5 mA ≤ILOAD ≤ID
Output Voltage, 14.5V ≤VIN ≤VMAX,−12.6 −11.4 V
(1) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 2 4 mA
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.1 0.4 mA
5 mA ≤ILOAD ≤ID0.1 0.4 mA
(1) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(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-N 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.
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LM320T-12 ELECTRICAL CHARACTERISTICS (continued) Power Plastic Package
Order Numbers LM320T-12
(TO-220) Units
Design Output Current (ID) 1A
Device Dissipation (PD) 15W
Parameter Conditions (1) Min Typ Max
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 400 μV
VIN = 17V, 10 Hz ≤f≤100 kHz
Long Term Stability 24 mV
Thermal Resistance
Junction to Case 4 °C/W
Junction to Ambient 50 °C/W
ABSOLUTE MAXIMUM RATINGS−15 VOLT REGULATORS(1)(2)
Power Dissipation Internally Limited
Input Voltage
LM120/LM320-N −40V
LM320T −35V
Input-Output Voltage Differential 30V
Junction Temperatures (3)
Storage Temperature Range −65°C to +150°C
Lead Temperature
(Soldering, 10 sec.) 300°C
(1) Refer to RETS120-15H drawing for LM120H-15 or RETS120-15K drawing for LM120K-15 military specifications.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
LM120K-15 AND LM320K-15 ELECTRICAL CHARACTERISTICS
Metal Can Package
Order Numbers LM120K-15 LM320K-15
(TO-3) (TO-3) Units
Design Output Current (ID) 1A
Device Dissipation (PD) 20W
Parameter Conditions (1) Min Typ Max Min Typ Max
Output Voltage TJ= 25°C, VIN = 20V, −15.3 −15 −14.7 −15.4 −15 −14.6 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 5 10 5 20 mV
VMIN ≤VIN ≤VMAX
Input Voltage −35 −17 −35 −17 V
Ripple Rejection f = 120 Hz 56 80 56 80 dB
Load Regulation, TJ= 25°C, VIN = 20V, 30 80 30 80 mV
(2) 5 mA ≤ILOAD ≤ID
Output Voltage, 17.5V ≤VIN ≤VMAX,−15.5 −14.5 −15.6 −14.4 V
(1) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 2 4 2 4 mA
(1) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(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-N 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.
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SNVS756C –APRIL 1998–REVISED APRIL 2013
LM120K-15 AND LM320K-15 ELECTRICAL CHARACTERISTICS (continued)
Metal Can Package
Order Numbers LM120K-15 LM320K-15
(TO-3) (TO-3) Units
Design Output Current (ID) 1A
Device Dissipation (PD) 20W
Parameter Conditions (1) Min Typ Max Min Typ Max
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.1 0.4 0.1 0.4 mA
5 mA ≤ILOAD ≤ID0.1 0.4 0.1 0.4 mA
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 400 400 μV
VIN = 20V, 10 Hz ≤f≤100 kHz
Long Term Stability 15 150 15 150 mV
Thermal Resistance
Junction to Case 3 3 °C/W
Junction to Ambient 35 35 °C/W
LM120H-15 ELECTRICAL CHARACTERISTICS Metal Can Package
Order Numbers LM120H-15
(TO) Units
Design Output Current (ID) 0.2A
Device Dissipation (PD) 2W
Parameter Conditions (1) Min Typ Max
Output Voltage TJ= 25°C, VIN = 20V, −15.3 −15 −14.7 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 5 10 mV
VMIN ≤VIN ≤VMAX
Input Voltage −35 −17 V
Ripple Rejection f = 120 Hz 56 80 dB
Load Regulation, TJ= 25°C, VIN = 20V, 10 25 mV
(2) 5 mA ≤ILOAD ≤ID
Output Voltage, 17.5V ≤VIN ≤VMAX,−15.5 −14.5 V
(1) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 2 4 mA
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.05 0.4 mA
5 mA ≤ILOAD ≤ID0.03 0.4 mA
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 400 μV
VIN = 20V, 10 Hz ≤f≤100 kHz
Long Term Stability 15 150 mV
Thermal Resistance
Junction to Case (3) °C/W
Junction to Ambient (3) °C/W
(1) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(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-N 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.
(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.
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LM320T-15 ELECTRICAL CHARACTERISTICS Power Plastic Package
Order Numbers LM320T-15
(TO-220) Units
Design Output Current (ID) 1A
Device Dissipation (PD) 15W
Parameter Conditions (1) Min Typ Max
Output Voltage TJ= 25°C, VIN = 20V, −15.5 −15 −14.5 V
ILOAD = 5 mA
Line Regulation TJ= 25°C, ILOAD = 5 mA, 5 20 mV
VMIN ≤VIN ≤VMAX
Input Voltage −35 −17.5 V
Ripple Rejection f = 120 Hz 56 80 dB
Load Regulation, TJ= 25°C, VIN = 20V, 30 80 mV
(2) 5 mA ≤ILOAD ≤ID
Output Voltage, 17.5V ≤VIN ≤VMAX,−15.7 −14.3 V
(1) 5 mA ≤ILOAD ≤ID, P ≤PD
Quiescent Current VMIN ≤VIN ≤VMAX 2 4 mA
Quiescent Current TJ= 25°C
Change VMIN ≤VIN ≤VMAX 0.1 0.4 mA
5 mA ≤ILOAD ≤ID0.1 0.4 mA
Output Noise Voltage TA= 25°C, CL= 1 μF, IL= 5 mA, 400 μV
VIN = 20V, 10 Hz ≤f≤100 kHz
Long Term Stability 30 mV
Thermal Resistance
Junction to Case 4 °C/W
Junction to Ambient 50 °C/W
(1) This specification applies over −55°C ≤TJ≤+150°C for the LM120 and 0°C ≤TJ≤+125°C for the LM320-N.
(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-N 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.
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SNVS756C –APRIL 1998–REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage vs Ripple Rejection
Temperature (All Types)
Figure 3. Figure 4.
Output Impedance TO-3 Output Impedance TO-5
and TO-220 Packages and TO-202 Packages
Figure 5. Figure 6.
Minimum Input-Output Minimum Input-Output
Differential TO-3 and Differential TO-5 and
TO-220 Packages TO-202 Packages
Figure 7. Figure 8.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Quiescent Current vs Quiescent Current vs
Input Voltage Load Current
Figure 9. Figure 10.
Maximum Average Power Maximum Average Power
Dissipation (TO-3) Dissipation (TO-5)
*These curves for LM120. Derate 25°C further for LM320-N.
Figure 11. Figure 12.
Maximum Average Power Maximum Average Power
Dissipation (TO-202) Dissipation (TO-220)
Figure 13. Figure 14.
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TYPICAL APPLICATIONS
Lead and line regulation — 0.01% temperature stability — 0.2%
†Determines Zener current.
††Solid tantalum.
An LM120-12 or LM120-15 may be used to permit higher input voltages, but the regulated output voltage must be at
least −15V when using the LM120-12 and −18V for the LM120-15.
**Select resistors to set output voltage. 2 ppm/°C tracking suggested.
Figure 16. High Stability 1 Amp Regulator
*Resistor tolerance of R1 and R2 determine matching of (+) and (−) 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.
Figure 17. Wide Range Tracking Regulator
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Figure 18. Current Source
SELECT R2 AS FOLLOWS:
LM120-5 300Ω
LM120-12 750Ω
LM120-15 1k
*C3 optional. Improves transient response and ripple rejection.
Figure 19. Variable Output Current Source
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See Performance (Typical)
*Resistor tolerance of R4 and R5 determine matching of (+) and (−) outputs.
**Necessary only if raw supply filter capacitors are more than 2 inches from regulators.
Figure 20. ±15V, 1 Amp Tracking Regulators
Performance (Typical)
Load Regulation at ΔIL= 1A 10 mV 1 mV
Output Ripple, CIN = 3000 μF, 100 μVrms 100 μVrms
IL= 1A
Temperature Stability +50 mV +50 mV
Output Noise 10 Hz ≤f≤10 kHz 150 μVrms 150 μVrms
Light Controllers Using Silicon Photo Cells
*Lamp brightness increases until iI= 5V/R1 (iIcan be set as low as 1 μA).
†Necessary only if raw supply filter capacitor is more than 2 inches from LM320MP.
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*Lamp brightness increases until iI=iQ(1 mA) + 5V/R1.
†Necessary only if raw supply filter capacitor is more than 2 inches from LM320-N.
Connection Diagram
Figure 21. Steel Metal Can Package TO-3 (NDS)
(Bottom View)
Figure 22. Metal Can Package TO (NDT)
(Bottom View)
Figure 23. Power Package TO-220 (NDE)
(Front View)
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SNVS756C –APRIL 1998–REVISED APRIL 2013
REVISION HISTORY
Changes from Revision B (April 2013) to Revision C Page
• Changed layout of National Data Sheet to TI format .......................................................................................................... 16
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Product Folder Links: LM120 LM320-N
PACKAGE OPTION ADDENDUM
www.ti.com 30-Apr-2021
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead finish/
Ball material
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
LM120H-12 ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM120H-12P+, LM1
20H-12P+)
LM120H-12/NOPB ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM120H-12P+, LM1
20H-12P+)
LM120H-15 ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM120H-15P+, LM1
20H-15P+)
LM120H-15/NOPB ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM120H-15P+, LM1
20H-15P+)
LM120H-5.0 ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM120H-5.0P+, LM
120H-5.0P+)
LM120H-5.0/NOPB ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM120H-5.0P+, LM
120H-5.0P+)
LM320T-15 NRND TO-220 NDE 3 45 Non-RoHS
& Green Call TI Call TI 0 to 125 LM320T
-15 P+
LM320T-15/NOPB ACTIVE TO-220 NDE 3 45 RoHS & Green SN Level-1-NA-UNLIM 0 to 125 LM320T
-15 P+
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
PACKAGE OPTION ADDENDUM
www.ti.com 30-Apr-2021
Addendum-Page 2
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
MECHANICAL DATA
NDT0003A
www.ti.com
H03A (Rev D)
MECHANICAL DATA
NDE0003B
www.ti.com
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