LM120H-12 National Semiconductor, LM120H-12 Datasheet

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LM120H-12

Manufacturer Part Number
LM120H-12
Description
Standard Regulator Neg -12V 0.2A 3-Pin TO-39 Box
Manufacturer
National Semiconductor
Type
Linearr
Datasheet

Specifications of LM120H-12

Package
3TO-39
Function
Standard
Number Of Outputs
1
Input Voltage Range
-32 to -14 V
Output Voltage
-12 V
Maximum Output Current
0.2 A
Output Type
Fixed
Accuracy
±3 %
Operating Temperature
-55 to 150 °C
Polarity
Negative

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© 2010 National Semiconductor Corporation
Series 3-Terminal Negative Regulators
General Description
The LM120 series are three-terminal negative regulators with
a fixed output voltage of −5V, −12V, and −15V, and up to 1.5A
load current capability. Where other voltages are required, the
LM137 and LM137HV series provide an output voltage range
of −1.2V to −47V.
The LM120 need only one external component—a compen-
sation 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 sat-
isfactory 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 pro-
longed overloads.
Although primarily intended for fixed output voltage applica-
tions, the LM120 Series may be programmed for higher out-
put voltages with a simple resistive divider. The low quiescent
Typical Applications
Fixed Regulator
7767
776702
Dual Trimmed Supply
LM120/LM320
drain current of the devices allows this technique to be used
with good regulation.
Features
*Required if regulator is separated from filter capacitor by more than 3 inch-
es. 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.
LM120/LM320 TO-3 (K)
LM320
Preset output voltage error less than ±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
Device
LM120 Series Packages and Power Capability
TO-39 (H)
TO-220 (T)
Package
776703
Dissipation
Power
Rated
20W
15W
2W
August 11, 2010
www.national.com
Current
Design
Load
1.5A
0.5A
1.5A

Related parts for LM120H-12

LM120H-12 Summary of contents

Page 1

... LM120 Series may be programmed for higher out- put voltages with a simple resistive divider. The low quiescent Typical Applications Fixed Regulator © 2010 National Semiconductor Corporation LM120/LM320 drain current of the devices allows this technique to be used with good regulation. Features ■ ...

Page 2

... Absolute Maximum Ratings −5 Volt Regulators (Note If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Dissipation Input Voltage Input-Output Voltage Differential Junction Temperatures Storage Temperature Range Lead Temperature (Soldering, 10 sec.) Plastic LM120K-5 ...

Page 3

... Note 3: For −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. (Note ...

Page 4

... Absolute Maximum Ratings −12 Volt Regulators (Note If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Dissipation Input Voltage Input-Output Voltage Differential Junction Temperatures Storage Temperature Range Lead Temperature (Soldering, 10 sec.) LM120K-12 Electrical Characteristics ...

Page 5

... LM120H-12 Electrical Characteristics Order Numbers Design Output Current (I Device Dissipation (P Parameter Output Voltage T = 25° LOAD Line Regulation T = 25° ≤ V MIN Input Voltage Ripple Rejection f = 120 Hz Load Regulation 25° (Note Output Voltage, 14.5V (Note ≤ Quiescent Current V MIN Quiescent Current T = 25° ...

Page 6

... On all other tests, even though power dissipation is internally limited, electrical specifications apply only Note 8: 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 9: Refer to RETS120H-12 drawing for LM120H-12 or RETS120-12K drawing for LM120K-12 military specifications. www.national.com ...

Page 7

... Absolute Maximum Ratings −15 Volt Regulators (Note If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Dissipation Input Voltage LM120/LM320 LM320T Input-Output Voltage Differential Junction Temperatures Storage Temperature Range Lead Temperature (Soldering, 10 sec.) ...

Page 8

... LM120H-15 Electrical Characteristics Order Numbers Design Output Current (I Device Dissipation (P Parameter Output Voltage LOAD Line Regulation MIN Input Voltage Ripple Rejection f = 120 Hz Load Regulation (Note 11 Output Voltage, 17.5V (Note 10 Quiescent Current V MIN Quiescent Current T J Change V MIN 5 mA Output Noise Voltage ...

Page 9

... On all other tests, even though power dissipation is internally limited, electrical specifications apply only Note 12: 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 13: Refer to RETS120-15H drawing for LM120H-15 or RETS120-15K drawing for LM120K-15 military specifications. ) ...

Page 10

Typical Performance Characteristics Output Voltage vs Temperature Output Impedance TO-3 and TO-220 Packages Minimum Input-Output Differential TO-3 and TO-220 Packages www.national.com 776720 Output Impedance TO-5 and TO-202 Packages 776722 Minimum Input-Output Differential TO-5 and TO-202 Packages 776724 10 Ripple Rejection ...

Page 11

Quiescent Current vs Input Voltage Maximum Average Power Dissipation (TO-3) *These curves for LM120. Derate 25°C further for LM320. Maximum Average Power Dissipation (TO-202) Quiescent Current vs 776726 Maximum Average Power Dissipation (TO-5) 776728 Maximum Average Power Dissipation (TO-220) 776730 ...

Page 12

Short Circuit Current www.national.com 776732 12 ...

Page 13

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 ...

Page 14

SELECT R2 AS FOLLOWS: LM120-5   300Ω     750Ω LM120-12   LM120-15 1k *C3 optional. Improves transient response and ripple rejection. www.national.com Current Source Variable Output Current Source 14 776708 776709 ...

Page 15

Performance (Typical) Load Regulation at Δ 3000 μF, 100 μVrms Output Ripple Temperature Stability +50 mV ≤ ≤ 10 kHz 150 μVrms Output Noise *Resistor ...

Page 16

Light Controllers Using Silicon Photo Cells *Lamp brightness increases until i = 5V/ †Necessary only if raw supply filter capacitor is more than 2 inches from LM320MP. *Lamp brightness increases until mA) + 5V/R1. I ...

Page 17

... Steel Metal Can Package TO-3 (K) Order Number LM120K-5.0/883, LM120K-12/883, LM120K-15/883, LM320K-5.0, LM320K-15 See NS Package Number K02A 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 See NS Package Number H03A 776714 Power Package TO-220 (T) Order Number LM320T-12 or LM320T-15 ...

Page 18

Schematic Diagrams www.national.com −5V −12V and −15V 18 776718 776719 ...

Page 19

... Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM120H-5.0, LM120H-12, LM120H-15 Metal Can Package (TO-39) (H) NS Package Number H03A 19 www.national.com ...

Page 20

Order Number LM120K-5.0, LM120K-12, LM120K-15, LM320K-5.0, LM320K-15 www.national.com Steel Metal Can Package TO-3 (K) NS Package Number K02A Power Package TO-220 (T) Order Number LM320T-12 or LM320T-15 NS Package Number T03B 20 ...

Page 21

Notes 21 www.national.com ...

Page 22

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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