LM120K-12/883 National Semiconductor, LM120K-12/883 Datasheet

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LM120K-12/883

Manufacturer Part Number
LM120K-12/883
Description
Standard Regulator Neg -12V 1.5A 3-Pin (2+Tab) TO-3 Tray
Manufacturer
National Semiconductor
Type
Linearr
Datasheet

Specifications of LM120K-12/883

Package
3TO-3
Function
Standard
Number Of Outputs
1
Output Voltage
-12 V
Maximum Output Current
1.5 A
Output Type
Fixed
Operating Temperature
-55 to 125 °C
Polarity
Negative

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Part Number
Manufacturer
Quantity
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Part Number:
LM120K-12/883
Manufacturer:
NS
Quantity:
5
© 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 needs 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
Ordering Information
Note 1: FOR ADDITIONAL DIE INFORMATION, PLEASE VISIT THE HI REL WEB SITE AT: www.national.com/analog/space/level_die
Connection Diagrams
LM120H-5.0/883
LM120H-12/883
LM120H-15/883
LM120K-12/883
LM120K-15/883
LM120KG–5 MD8
LM120KG–12 MD8
LM120KG–15 MD8
NS Part Number
Steel Metal Can Package TO-3 (K)
See NS Package Number K02C
Bottom View
SMD Part Number
201501
20150114
LM120QML
NS Package Number
drain current of the devices allows this technique to be used
with good regulation.
Features
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
LM120 Series Packages and Power Capability
(Note
(Note
(Note
H03A
H03A
H03A
K02C
K02C
TO-3 (K)
TO-39 (H)
Package
1)
1)
1)
See NS Package Number H03A
Metal Can Package TO-39 (H)
Bottom View
Dissipation
3LD T0–39 Metal Can
3LD T0–39 Metal Can
3LD T0–39 Metal Can
2LD T0–3 Metal Can
2LD T0–3 Metal Can
Bare Die
Bare Die
Bare Die
Power
Rated
20W
2W
Package Description
December 16, 2010
Current
Design
Load
1.5A
0.5A
20150113
www.national.com

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LM120K-12/883 Summary of contents

Page 1

... The low quiescent Ordering Information NS Part Number LM120H-5.0/883 LM120H-12/883 LM120H-15/883 LM120K-12/883 LM120K-15/883 LM120KG–5 MD8 LM120KG–12 MD8 LM120KG–15 MD8 Note 1: FOR ADDITIONAL DIE INFORMATION, PLEASE VISIT THE HI REL WEB SITE AT: www.national.com/analog/space/level_die Connection Diagrams ...

Page 2

Schematic Diagrams www.national.com −5V −12V and −15V 2 20150118 20150119 ...

Page 3

Absolute Maximum Ratings Power Dissipation Input Voltage Input-Output Voltage Differential Junction Temperatures Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 sec.) Thermal Resistance   θ JA H-Pkg (Still Air @ 0.5W) H-Pkg (500LF/Min Air flow @ 0.5W) K-Pkg (Still ...

Page 4

... Quiescent Current Change Q V Output Voltage OUT R Line Regulation Line R Load Regulation Load I Short Circuit Current OS RR Ripple Rejection LM120K-5.0 DC Parameters The following conditions apply, unless otherwise specified. Symbol Parameter I Quiescent Current Q ΔI Quiescent Current Change Q V Output Voltage OUT R Line Regulation ...

Page 5

... Q R Load Regulation Load R Line Regulation Line I Short Circuit Current OS V Output Voltage OUT RR Ripple Rejection LM120K-12 DC Parameters The following conditions apply to all the following parameters, unless otherwise specified. Symbol Parameter I Quiescent Current Q ΔI Quiescent Current Change Q R Load Regulation Load R ...

Page 6

... Quiescent Current Change Q R Load Regulation Load R Line Regulation Line I Short Circuit Current OS V Output Voltage OUT RR Ripple Rejection LM120K-15 DC Parameters The following conditions apply, unless otherwise specified. Symbol Parameter I Quiescent Current Q ΔI Quiescent Current Change Q R Load Regulation Load R Line Regulation ...

Page 7

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 ...

Page 8

Quiescent Current vs Input Voltage Maximum Average Power Dissipation (TO-3) *These curves for LM120. Derate 25°C further for LM320. Short Circuit Current www.national.com 20150126 20150128 20150132 8 Quiescent Current vs Load Current 20150127 Maximum Average Power Dissipation (TO-5) 20150129 ...

Page 9

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 10

Variable Output *Optional. Improves transient response and ripple rejection. SELECT R2 AS FOLLOWS:     −300Ω LM120-5     −750Ω LM120-12   LM120-15 −1k Light Controllers Using Silicon Photo Cells *Lamp brightness increases until i = 5V/ †Necessary only if ...

Page 11

Amp Tracking Regulators Performance (Typical) Load Regulation at Δ 3000 μF, Output Ripple Temperature Stability ≤ ≤ Output Noise *Resistor tolerance of R4 and R5 ...

Page 12

Revision History Date Released Revision Section 12/15/2010 A www.national.com New release to the corporate format 12 Changes 6 MDS datasheets were converted and merged into one datasheet compliant to corporate format. Drift endpoints removed since note used on 883 product. ...

Page 13

Physical Dimensions inches (millimeters) unless otherwise noted Metal Can Package (TO-39) (H) NS Package Number H03A Steel Metal Can Package TO-3 (K) NS Package Number K02C 13 www.national.com ...

Page 14

... 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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