LM323-N [TI]
3-Amp, 5-Volt Positive Regulator;
| 型号： | LM323-N |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 3-Amp, 5-Volt Positive Regulator |
| 文件： | 总12页 (文件大小：1187K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM123, LM323-N, LM323A
www.ti.com
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
LM123/LM323A/LM323-N 3-Amp, 5-Volt Positive Regulator
Check for Samples: LM123, LM323-N, LM323A
The 3 amp regulator is virtually blowout proof.
1
FEATURES
Current limiting, power limiting, and thermal shutdown
provide the same high level of reliability obtained with
these techniques in the LM109 1 amp regulator.
2
•
•
•
•
•
•
•
Ensured 1% Initial Accuracy (A Version)
3 Amp Output Current
Internal Current and Thermal Limiting
0.01Ω Typical Output Impedance
7.5V Minimum Input Voltage
30W Power Dissipation
No external components are required for operation of
the LM123. If the device is more than 4 inches from
the filter capacitor, 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.
P+ Product Enhancement tested
DESCRIPTION
An overall worst case specification for the combined
effects of input voltage, load currents, ambient
temperature, and power dissipation ensure that the
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 characteristics of lower
current devices.
LM123 will perform satisfactorily as
element.
a system
For applications requiring other voltages, see LM150
series adjustable regulator data sheet.
The LM323A offers improved precision over the
standard LM323-N. Parameters with tightened
specifications include output voltage tolerance, line
regulation, and load regulation.
Operation is specified over the junction temperature
range −55°C to +150°C for LM123, −40°C to +125°C
for LM323A, and 0°C to +125°C for LM323-N. A
hermetic TO-3 package is used for high reliability and
low thermal resistance.
Connection Diagram
Metal Can Package
Figure 1. See Package Number NDS
1
Please 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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004, Texas Instruments Incorporated
LM123, LM323-N, LM323A
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
www.ti.com
Typical Applications
*Required if LM123 is more than 4″ from filter capacitor.
†Regulator is stable with no load capacitor into resistive loads.
Figure 2. Basic 3 Amp Regulator
2
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Product Folder Links: LM123 LM323-N LM323A
LM123, LM323-N, LM323A
www.ti.com
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
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(1) (2)(3)
Input Voltage
20V
Internally Limited
−55°C to +150°C
−40°C to +125°C
0°C to +125°C
−65°C to +150°C
300°C
Power Dissipation
Operating Junction Temperature Range
LM123
LM323A
LM323-N
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
ESD Tolerance(4)
2000V
(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 ensure specific performance limits.
(2) Refer to RETS123K drawing for LM123K military specifications.
(3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(4) Human body model, 1.5 kΩ in series with 100 pF.
LM123 Electrical Characteristics(1)
Parameter
Conditions
LM123
Typ
Units
Min
Max
Output Voltage
Tj = 25°C
VIN = 7.5V, IOUT = 0A
4.7
5
5.3
V
V
7.5V ≤ VIN ≤ 15V
0A ≤ IOUT ≤ 3A, P ≤ 30W
4.6
5.4
25
(2)
Line Regulation
Load Regulation
Tj = 25°C
7.5V ≤ VIN ≤ 15V
5
mV
mV
mA
μVrms
(2)
Tj = 25°C, VIN = 7.5V,
0A ≤ IOUT ≤ 3A
25
12
40
100
20
Quiescent Current
7.5V ≤ VIN ≤ 15V,
0A ≤ IOUT ≤ 3A
Output Noise Voltage
Short Circuit Current Limit
Tj = 25°C
10 Hz ≤ f ≤ 100 kHz
Tj = 25°C
VIN = 15V
VIN = 7.5V
3
4
4.5
5
A
A
Long Term Stability
Thermal Resistance Junction to Case(3)
35
mV
°C/W
2
(1) Unless otherwise noted, specifications apply for −55°C ≤ Tj ≤ +150°C for the LM123, −40°C ≤ Tj ≤ +125°C for the LM323A, and 0°C ≤ Tj
≤ +125°C for the LM323-N. Although power dissipation is internally limited, specifications apply only for P ≤ 30W.
(2) Load and line regulation are specified at constant junction temperature. Pulse testing is required with a pulse width ≤ 1 ms and a duty
cycle ≤ 5%.
(3) Without a heat sink, the thermal resistance of the TO-3 package is about 35°C/W. With a heat sink, the effective thermal resistance can
only approach the specified values of 2°C/W, depending on the efficiency of the heat sink.
Copyright © 2004, Texas Instruments Incorporated
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3
Product Folder Links: LM123 LM323-N LM323A
LM123, LM323-N, LM323A
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
www.ti.com
Units
(1)
LM323A/LM323-N Electrical Characteristics
Parameter
Conditions
LM323A
Typ
LM323-N
Typ
Min
Max
Min
Max
Output Voltage
Tj = 25°C
VIN = 7.5V, IOUT = 0A
4.95
5
5.05
4.8
5
5.2
V
V
7.5V ≤ VIN ≤ 15V
0A ≤ IOUT ≤ 3A, P ≤ 30W
4.85
5.15
10
4.75
5.25
25
Line Regulation(2)
Tj = 25°C
7.5V ≤ VIN ≤ 15V
5
5
mV
mV
mA
μVrms
Load Regulation(2)
Quiescent Current
Tj = 25°C, VIN = 7.5V,
0A ≤ IOUT ≤ 3A
25
12
40
50
25
12
40
100
20
7.5V ≤ VIN ≤ 15V,
0A ≤ IOUT ≤ 3A
20
Output Noise Voltage
Short Circuit Current Limit
Tj = 25°C
10 Hz ≤ f ≤ 100 kHz
Tj = 25°C
VIN = 15V
VIN = 7.5V
3
4
4.5
6
3
4
4.5
5
A
A
Long Term Stability
35
35
mV
Thermal Resistance Junction to
Case
2
2
°C/W
(3)
(1) Unless otherwise noted, specifications apply for −55°C ≤ Tj ≤ +150°C for the LM123, −40°C ≤ Tj ≤ +125°C for the LM323A, and 0°C ≤ Tj
≤ +125°C for the LM323-N. Although power dissipation is internally limited, specifications apply only for P ≤ 30W.
(2) Load and line regulation are specified at constant junction temperature. Pulse testing is required with a pulse width ≤ 1 ms and a duty
cycle ≤ 5%.
(3) Without a heat sink, the thermal resistance of the TO-3 package is about 35°C/W. With a heat sink, the effective thermal resistance can
only approach the specified values of 2°C/W, depending on the efficiency of the heat sink.
4
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Copyright © 2004, Texas Instruments Incorporated
Product Folder Links: LM123 LM323-N LM323A
LM123, LM323-N, LM323A
www.ti.com
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
Typical Performance Characteristics
Maximum Average Power
Dissipation for LM123
Maximum Average Power
Dissipation for LM323A, LM323-N
Figure 3.
Figure 4.
Output Impedance
Peak Available Output Current
Figure 5.
Figure 6.
Short Circuit Current
Ripple Rejection
Figure 7.
Figure 8.
Copyright © 2004, Texas Instruments Incorporated
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Product Folder Links: LM123 LM323-N LM323A
LM123, LM323-N, LM323A
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
www.ti.com
Typical Performance Characteristics (continued)
Dropout Voltage
Line Transient Response
Figure 9.
Figure 10.
Output Voltage
Quiescent Current
Figure 11.
Figure 12.
Load Transient Response
Output Noise Voltage
Figure 13.
Figure 14.
6
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Copyright © 2004, Texas Instruments Incorporated
Product Folder Links: LM123 LM323-N LM323A
LM123, LM323-N, LM323A
www.ti.com
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
TYPICAL APPLICATIONS
*Select for 20 mA Current from Unregulated Negative Supply
Figure 15. 10 Amp Regulator with Complete Overload Protection
Copyright © 2004, Texas Instruments Incorporated
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7
Product Folder Links: LM123 LM323-N LM323A
LM123, LM323-N, LM323A
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
www.ti.com
A1—LM101A
C1—2 μF Optional—Improves Ripple Rejection, Noise, and Transient Response
Figure 16. Adjustable Regulator 0V−10V @ 3A
Figure 17. Trimming Output to 5V
*Select to Set Output Voltage
**Select to Draw 25 mA from V−
Figure 18. Adjustable Output 5V−10V 0.1% Regulation
8
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Copyright © 2004, Texas Instruments Incorporated
Product Folder Links: LM123 LM323-N LM323A
LM123, LM323-N, LM323A
www.ti.com
SNVS757B –MAY 2004–REVISED NOVEMBER 2004
Schematic Diagram
Copyright © 2004, Texas Instruments Incorporated
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9
Product Folder Links: LM123 LM323-N LM323A
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
PACKAGING INFORMATION
Orderable Device
LM323K STEEL
Status Package Type Package Pins Package
Eco Plan Lead/Ball Finish
MSL Peak Temp
Op Temp (°C)
0 to 125
Top-Side Markings
Samples
Drawing
Qty
(1)
(2)
(3)
(4)
ACTIVE
TO-3
TO-3
NDS
2
2
50
TBD
Call TI
Call TI
LM323K
STEEL
LM323K STEEL/NOPB
ACTIVE
NDS
50
Green (RoHS POST-PLATE
& no Sb/Br)
Level-1-NA-UNLIM
0 to 125
LM323K
STEEL
(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) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
Multiple Top-Side Markings will be inside parentheses. Only one Top-Side 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 Top-Side Marking for that device.
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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
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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.
Addendum-Page 1
MECHANICAL DATA
NDS0002A
www.ti.com
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