LM123QML [TI]
LM123QML 3-Amp, 5-Volt Positive Regulator; LM123QML 3安培， 5伏正稳压器
| 型号： | LM123QML |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | LM123QML 3-Amp, 5-Volt Positive Regulator |
| 文件： | 总14页 (文件大小：552K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM123QML
LM123QML 3-Amp, 5-Volt Positive Regulator
Literature Number: SNVS393
December 16, 2010
LM123QML
3-Amp, 5-Volt Positive Regulator
An overall worst case specification for the combined effects
of input voltage, load currents, ambient temperature, and
power dissipation ensure that the LM123 will perform satis-
factorily as a system element.
General Description
The LM123 is a three-terminal positive regulator with a preset
5V output and a load driving capability of 3 amps. New circuit
design and processing techniques are used to provide the
high output current without sacrificing the regulation charac-
teristics of lower current devices.
For applications requiring other voltages, see LM150 series
adjustable regulator data sheet.
The 3 amp regulator is virtually blowout proof. Current limiting,
power limiting, and thermal shutdown provide the same high
level of reliability obtained with these techniques in the LM109
1 amp regulator.
Features
3 amp output current
■
Internal current and thermal limiting
■
No external components are required for operation of the
LM123. If the device is more than 4 inches from the filter ca-
pacitor, however, a 1 μF solid tantalum capacitor should be
used on the input. A 0.1 μF or larger capacitor may be used
on the output to reduce load transient spikes created by fast
switching digital logic, or to swamp out stray load capacitance.
0.01Ω typical output impedance
7.5V minimum input voltage
30W power dissipation
■
■
■
Ordering Information
NS Part Number
SMD Part Number
NS Package Number
Package Description
2LD T0-3 Metal Can
LM123K/883
K02C
Connection Diagram
Metal Can Package
20159302
See NS Package Number K02C
© 2010 National Semiconductor Corporation
201593
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Schematic Diagram
20159301
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2
Absolute Maximum Ratings (Note 1)
Input Voltage
20V
Power Dissipation (Note 2)
Operating Junction Temperature Range
Internally Limited
−55°C ≤ TJ ≤ +150°C
−65°C ≤ TJ ≤ +150°C
300°C
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
ESD Tolerance (Note 3)
2000V
Quality Conformance Inspection
Mil-Std-883, Method 5005 - Group A
Subgroup
Description
Static tests at
Temp (°C)
1
2
+25
+125
-55
Static tests at
3
Static tests at
4
Dynamic tests at
Dynamic tests at
Dynamic tests at
Functional tests at
Functional tests at
Functional tests at
Switching tests at
Switching tests at
Switching tests at
Settling time at
Settling time at
Settling time at
+25
+125
-55
5
6
7
+25
+125
-55
8A
8B
9
+25
+125
-55
10
11
12
13
14
+25
+125
-55
DC Parameters
Sub-
groups
Symbol
Parameter
Conditions
Notes
Min Max
Units
VIN = 7.5V, IO = 0A
4.7
4.6
-25
5.3
5.4
25
V
V
1
VOUT
Output Voltage
7.5V ≤ VIN ≤ 15V,
0 ≤ IO ≤ 3A, P ≤ 30W
1, 2, 3
VRLine
VRLoad
Line Regulation
Load Regulation
mV
mV
mA
1
1
7.5V ≤ VIN ≤ 15V, IO = 0A
VIN = 7.5V, 0 ≤ IO ≤ 3A
VIN = 15V, 0 ≤ IO ≤ 3A
-100 100
20
1, 2, 3
IQ
Quiescent Current
20
4.5
5.0
35
mA
A
1, 2, 3
VIN = 7.5V, 0 ≤ IO ≤ 3A
VIN = 15V
1
1
1
ISC
Short Circuit Current
Long Term Stability
VIN =7.5V
A
ΔVO / ΔT
(Note 4)
mV
Note 1: 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 2: 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)/
θ
JA or the number given in the Absolute Maximum Ratings, whichever is lower.
Note 3: Human body model, 1.5 kΩ in series with 100 pF.
Note 4: Guaranteed parameter not tested.
3
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Typical Performance Characteristics
Maximum Average Power
Dissipation for LM123
Output Impedance
20159311
20159309
Peak Available Output Current
Short Circuit Current
20159313
20159312
Ripple Rejection
Dropout Voltage
20159314
20159315
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4
Line Transient Response
Output Voltage
20159316
20159317
Quiescent Current
Load Transient Response
20159318
20159319
Output Noise Voltage
20159320
5
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Typical Applications
10 Amp Regulator with Complete Overload Protection
20159306
*Select for 20 mA Current from Unregulated Negative Supply
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6
Adjustable Regulator 0V−10V @ 3A
20159307
A1—LM101A
C1—2 μF Optional—Improves Ripple Rejection, Noise, and Transient Response
Trimming Output to 5V
20159308
Adjustable Output 5V−10V 0.1% Regulation
20159304
*Select to Set Output Voltage
**Select to Draw 25 mA from V−
7
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Basic 3 Amp Regulator
20159303
*Required if LM123 is more than 4″ from filter capacitor.
†Regulator is stable with no load capacitor into resistive loads.
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8
Revision History Section
Released
Revision
Section
Changes
12/16/2010
A
New Release, Corporate format
1 MDS data sheet converted into one Corp. data
sheet format. The drift table was eliminated from the
883 section since it did not apply; MNLM123-X Rev
0BL will be archived.
9
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Physical Dimensions inches (millimeters) unless otherwise noted
Metal Can Package (K)
NS Package Number K02C
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10
Notes
11
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Notes
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