LM137 [TI]
扩展温度 1.5A 可调节输出负电压稳压器/LDO;
| 型号： | LM137 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 扩展温度 1.5A 可调节输出负电压稳压器/LDO 电源电路 线性稳压器IC |
| 文件： | 总22页 (文件大小：2293K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM137, LM337-N
www.ti.com
SNVS778D –MAY 1999–REVISED APRIL 2013
LM137/LM337-N 3-Terminal Adjustable Negative Regulators
Check for Samples: LM137, LM337-N
1
FEATURES
DESCRIPTION
The LM137/LM337-N are adjustable 3-terminal
negative voltage regulators capable of supplying in
excess of −1.5A over an output voltage range of
−1.2V to −37V. These regulators are exceptionally
easy to apply, requiring only 2 external resistors to
set the output voltage and 1 output capacitor for
frequency compensation. The circuit design has been
optimized for excellent regulation and low thermal
transients. Further, the LM137 series features internal
current limiting, thermal shutdown and safe-area
compensation, making them virtually blowout-proof
against overloads.
2
•
•
Output Voltage Adjustable from −1.2V to −37V
1.5A Output Current Specified, −55°C to
+150°C
•
•
•
•
•
•
•
•
•
•
•
Line Regulation Typically 0.01%/V
Load Regulation Typically 0.3%
Excellent Thermal Regulation, 0.002%/W
77 dB Ripple Rejection
Excellent Rejection of Thermal Transients
50 ppm/°C Temperature Coefficient
Temperature-independent Current Limit
Internal Thermal Overload Protection
P+ Product Enhancement Tested
Standard 3-lead Transistor Package
Output is Short Circuit Protected
The LM137/LM337-N serve
a wide variety of
applications including local on-card regulation,
programmable-output voltage regulation or precision
current regulation. The LM137/LM337-N are ideal
complements to the LM117/LM317 adjustable
positive regulators.
Table 1. LM137 Series Packages and Power
Capability
Device
Package
Rated Power
Dissipation
Design
Load
Current
LM137/337-N TO-3 (K)
TO (NDT)
20W
2W
1.5A
0.5A
1.5A
1A
LM337-N
LM337-N
TO-220 (NDE)
SOT-223 (DCY)
15W
2W
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.
2
All trademarks are the property of their respective owners.
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 © 1999–2013, Texas Instruments Incorporated
LM137, LM337-N
SNVS778D –MAY 1999–REVISED APRIL 2013
www.ti.com
Typical Applications
Full output current not available at high input-output voltages
†C1 = 1 μF solid tantalum or 10 μF aluminum electrolytic required for stability
*C2 = 1 μF solid tantalum is required only if regulator is more than 4″ from power-supply filter capacitor
Output capacitors in the range of 1 μF to 1000 μF of aluminum or tantalum electrolytic are commonly used to provide
improved output impedance and rejection of transients
Figure 1. Adjustable Negative Voltage Regulator
Comparison between SOT-223 and D-Pak (TO-252) Packages
Figure 2. Scale 1:1
2
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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(1)(2)
Power Dissipation
Internally Limited
40V
Input-Output Voltage Differential
Operating Junction Temperature Range
LM137
−55°C to +150°C
0°C to +125°C
−40°C to +125°C
−65°C to +150°C
300°C
LM337-N
LM337I
Storage Temperature
Lead Temperature (Soldering, 10 sec.)
Plastic Package (Soldering, 4 sec.)
ESD Rating
260°C
2k Volts
(1) Refer to RETS137H drawing for LM137H or RETS137K drawing for LM137K military specifications.
(2) Unless otherwise specified, these specifications apply −55°C ≤ Tj ≤ +150°C for the LM137, 0°C ≤ Tj ≤ +125°C for the LM337-N; VIN
VOUT = 5V; and IOUT = 0.1A for the TO package and IOUT = 0.5A for the TO-3, SOT-223 and TO-220 packages. Although power
dissipation is internally limited, these specifications are applicable for power dissipations of 2W for the TO and SOT-223 (see
−
APPLICATION HINTS), and 20W for the TO-3, and TO-220. IMAX is 1.5A for the TO-3, SOT-223 and TO-220 packages, and 0.2A for the
TO package.
ELECTRICAL CHARACTERISTICS(1)
Parameter
Conditions
LM137
Typ
LM337
Typ
Units
Min
Max
Min
Max
Line Regulation
Tj = 25°C, 3V ≤ |VIN − VOUT| ≤ 40V
(2)IL = 10 mA
0.01
0.02
0.01
0.04
%/V
Load Regulation
Tj = 25°C, 10 mA ≤ IOUT ≤ IMAX
Tj = 25°C, 10 ms Pulse
0.3
0.002
65
0.5
0.02
100
5
0.3
0.003
65
1.0
0.04
100
5
%
%/W
μA
Thermal Regulation
Adjustment Pin Current
Adjustment Pin Current Charge
10 mA ≤ IL ≤ IMAX
3.0V ≤ |VIN − VOUT| ≤ 40V,
TA = 25°C
2
2
μA
(3)
Reference Voltage
Tj = 25°C
−1.225 −1.250 −1.275 −1.213 −1.250 −1.287
−1.200 −1.250 −1.300 −1.200 −1.250 −1.300
V
V
(3)
3V ≤ |VIN − VOUT| ≤ 40V,
10 mA ≤ IOUT ≤ IMAX, P ≤ PMAX
(2)
Line Regulation
3V ≤ |VIN − VOUT| ≤ 40V,
0.02
0.3
0.6
2.5
1.2
0.05
1
0.02
0.3
0.6
2.5
1.5
0.07
1.5
%/V
%
(2)
Load Regulation
10 mA ≤ IOUT ≤ IMAX
,
Temperature Stability
Minimum Load Current
TMIN ≤ Tj ≤ TMAX
%
|VIN − VOUT| ≤ 40V
|VIN − VOUT| ≤ 10V
5
3
10
6
mA
mA
(1) Unless otherwise specified, these specifications apply −55°C ≤ Tj ≤ +150°C for the LM137, 0°C ≤ Tj ≤ +125°C for the LM337-N; VIN
VOUT = 5V; and IOUT = 0.1A for the TO package and IOUT = 0.5A for the TO-3, SOT-223 and TO-220 packages. Although power
dissipation is internally limited, these specifications are applicable for power dissipations of 2W for the TO and SOT-223 (see
−
APPLICATION HINTS), and 20W for the TO-3, and TO-220. IMAX is 1.5A for the TO-3, SOT-223 and TO-220 packages, and 0.2A for the
TO package.
(2) Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to
heating effects are covered under the specification for thermal regulation. Load regulation is measured on the output pin at a point ⅛ in.
below the base of the TO-3 and TO packages.
(3) Selected devices with tightened tolerance reference voltage available.
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Units
ELECTRICAL CHARACTERISTICS(1) (continued)
Parameter
Conditions
LM137
Typ
LM337
Typ
Min
Max
Min
Max
Current Limit
|VIN − VOUT| ≤ 15V
K, DCY and NDE Package
NDT Package
1.5
0.5
2.2
0.8
3.5
1.8
1.5
0.5
2.2
0.8
3.7
1.9
A
A
|VIN − VOUT| = 40V, Tj = 25°C
K, DCY and NDE Package
NDT Package
0.24
0.15
0.4
0.17
0.003
60
0.15
0.10
0.4
0.17
0.003
60
A
A
RMS Output Noise, % of VOUT
Ripple Rejection Ratio
Tj = 25°C, 10 Hz ≤ f ≤ 10 kHz
VOUT = −10V, f = 120 Hz
CADJ = 10 μF
%
dB
66
77
66
77
dB
Long-Term Stability
Tj = 125°C, 1000 Hours
NDT Package
0.3
1
15
3
0.3
12
1
15
3
%
Thermal Resistance, Junction to
Case
12
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
K Package
2.3
2.3
4
NDE Package
Thermal Resistance, Junction to
Ambient (No Heat Sink)
NDT Package
140
35
140
35
K Package
NDE Package
50
DCY Package
170
4
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SNVS778D –MAY 1999–REVISED APRIL 2013
SCHEMATIC DIAGRAM
Thermal Regulation
When power is dissipated in an IC, a temperature gradient occurs across the IC chip affecting the individual IC
circuit components. With an IC regulator, this gradient can be especially severe since power dissipation is large.
Thermal regulation is the effect of these temperature gradients on output voltage (in percentage output change)
per Watt of power change in a specified time. Thermal regulation error is independent of electrical regulation or
temperature coefficient, and occurs within 5 ms to 50 ms after a change in power dissipation. Thermal regulation
depends on IC layout as well as electrical design. The thermal regulation of a voltage regulator is defined as the
percentage change of VOUT, per Watt, within the first 10 ms after a step of power is applied. The LM137's
specification is 0.02%/W, max.
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LM137, VOUT = −10V
VIN − VOUT = −40V
IIL = 0A → 0.25A → 0A
Vertical sensitivity, 5 mV/div
Figure 3.
In Figure 3, a typical LM137's output drifts only 3 mV (or 0.03% of VOUT = −10V) when a 10W pulse is applied for
10 ms. This performance is thus well inside the specification limit of 0.02%/W × 10W = 0.2% max. When the
10W pulse is ended, the thermal regulation again shows a 3 mV step at the LM137 chip cools off. Note that the
load regulation error of about 8 mV (0.08%) is additional to the thermal regulation error. In Figure 4, when the
10W pulse is applied for 100 ms, the output drifts only slightly beyond the drift in the first 10 ms, and the thermal
error stays well within 0.1% (10 mV).
LM137, VOUT = −10V
VIN − VOUT = −40V
IL = 0A → 0.25A → 0A
Horizontal sensitivity, 20 ms/div
Figure 4.
6
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SNVS778D –MAY 1999–REVISED APRIL 2013
Connection Diagrams
Case Is Input
See STD Mil DWG 5962P99517 for
Radiation Tolerant Devices
Case is Input
Figure 6. TO
Metal Can Package
Figure 5. TO-3
Metal Can Package
Bottom View
Bottom View
See Package Number NDT0003A
See Package Number K0002C
See Package Number NDS0002A
Figure 7. TO-220
Plastic Package
Front View
See Package Number NDE0003B
Figure 8. 3-Lead SOT-223
Front View
Package Marked N02A
See Package Number DCY0004A
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APPLICATION HINTS
When a value for θ(H−A) is found using the equation shown, a heatsink must be selected that has a value that is
less than or equal to this number.
HEATSINKING SOT-223 PACKAGE PARTS
The SOT-223 (“DCY”) packages use a copper plane on the PCB and the PCB itself as a heatsink. To optimize
the heat sinking ability of the plane and PCB, solder the tab of the package to the plane.
Figure 9 and Figure 10 show the information for the SOT-223 package. Figure 10 assumes a θ(J−A) of 75°C/W for
1 ounce copper and 51°C/W for 2 ounce copper and a maximum junction temperature of 125°C.
Figure 9. θ(J−A) vs Copper (2 ounce) Area for the SOT-223 Package
Figure 10. Maximum Power Dissipation vs. TAMB for the SOT-223 Package
Please see AN-1028 (literature number SNVA036) for power enhancement techniques to be used with the SOT-
223 package.
8
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SNVS778D –MAY 1999–REVISED APRIL 2013
Typical Applications
Figure 11. Adjustable Lab Voltage Regulator
Full output current not available
at high input-output voltages
*The 10 μF capacitors are optional to improve ripple rejection
Figure 12. Current Regulator
Figure 13. Negative Regulator with Protection Diodes
*When CL is larger than 20 μF, D1 protects the LM137 in case the input supply is shorted
**When C2 is larger than 10 μF and −VOUT is larger than −25V, D2 protects the LM137 in case the output is shorted
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SNVS778D –MAY 1999–REVISED APRIL 2013
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Figure 14. −5.2V Regulator with Electronic Shutdown*
*Minimum output ≃ −1.3V when control input is low
Figure 15. Adjustable Current Regulator
Figure 16. High Stability −10V Regulator
10
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SNVS778D –MAY 1999–REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS
(K Steel and NDE Packages)
Load Regulation
Current Limit
Figure 17.
Figure 18.
Adjustment Current
Dropout Voltage
Figure 19.
Figure 20.
Temperature Stability
Minimum Operating Current
Figure 21.
Figure 22.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
(K Steel and NDE Packages)
Ripple Rejection
Ripple Rejection
Figure 23.
Figure 24.
Ripple Rejection
Output Impedance
Figure 25.
Figure 26.
Line Transient Response
Load Transient Response
Figure 27.
Figure 28.
12
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SNVS778D –MAY 1999–REVISED APRIL 2013
REVISION HISTORY
Changes from Revision C (April 2013) to Revision D
Page
•
Changed layout of National Data Sheet to TI format .......................................................................................................... 12
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PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
PACKAGING INFORMATION
Orderable Device
LM137H
Status Package Type Package Pins Package
Eco Plan Lead/Ball Finish
MSL Peak Temp
Op Temp (°C)
-55 to 150
-55 to 150
-40 to 125
-40 to 125
Top-Side Markings
Samples
Drawing
Qty
(1)
(2)
(3)
(4)
ACTIVE
TO
TO
TO
TO
NDT
3
3
3
3
500
Green (RoHS POST-PLATE
& no Sb/Br)
Level-1-NA-UNLIM
Level-1-NA-UNLIM
Level-1-NA-UNLIM
Level-1-NA-UNLIM
LM137HP+
LM137H/NOPB
LM337H
ACTIVE
ACTIVE
ACTIVE
NDT
NDT
NDT
500
500
500
Green (RoHS POST-PLATE
& no Sb/Br)
LM137HP+
LM337H
Green (RoHS POST-PLATE
& no Sb/Br)
LM337H/NOPB
Green (RoHS POST-PLATE
& no Sb/Br)
LM337H
LM337IMP
ACTIVE
ACTIVE
SOT-223
SOT-223
DCY
DCY
4
4
1000
1000
TBD
Call TI
Call TI
-40 to 125
-40 to 125
N02A
N02A
LM337IMP/NOPB
Green (RoHS
& no Sb/Br)
CU SN
Level-1-260C-UNLIM
LM337IMPX
ACTIVE
ACTIVE
SOT-223
SOT-223
DCY
DCY
4
4
2000
2000
TBD
Call TI
CU SN
Call TI
-40 to 125
-40 to 125
N02A
N02A
LM337IMPX/NOPB
Green (RoHS
& no Sb/Br)
Level-1-260C-UNLIM
LM337T
ACTIVE
ACTIVE
TO-220
TO-220
NDE
NDG
3
3
45
45
TBD
Call TI
CU SN
Call TI
-40 to 125
LM337T P+
LM337T P+
LM337T/LF01
Pb-Free (RoHS
Exempt)
Level-3-245C-168 HR
LM337T/NOPB
ACTIVE
TO-220
NDE
3
45
Pb-Free (RoHS
Exempt)
CU SN
Level-1-NA-UNLIM
-40 to 125
LM337T 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) 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.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
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.
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.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
24-Apr-2013
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
LM337IMP
LM337IMP/NOPB
LM337IMPX
SOT-223
SOT-223
SOT-223
SOT-223
DCY
DCY
DCY
DCY
4
4
4
4
1000
1000
2000
2000
330.0
330.0
330.0
330.0
16.4
16.4
16.4
16.4
7.0
7.0
7.0
7.0
7.5
7.5
7.5
7.5
2.2
2.2
2.2
2.2
12.0
12.0
12.0
12.0
16.0
16.0
16.0
16.0
Q3
Q3
Q3
Q3
LM337IMPX/NOPB
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
24-Apr-2013
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
LM337IMP
LM337IMP/NOPB
LM337IMPX
SOT-223
SOT-223
SOT-223
SOT-223
DCY
DCY
DCY
DCY
4
4
4
4
1000
1000
2000
2000
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
35.0
35.0
35.0
35.0
LM337IMPX/NOPB
Pack Materials-Page 2
MECHANICAL DATA
NDT0003A
H03A (Rev D)
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MECHANICAL DATA
NDE0003B
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MECHANICAL DATA
NDG0003F
T03F (Rev B)
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MECHANICAL DATA
MPDS094A – APRIL 2001 – REVISED JUNE 2002
DCY (R-PDSO-G4)
PLASTIC SMALL-OUTLINE
6,70 (0.264)
6,30 (0.248)
3,10 (0.122)
2,90 (0.114)
4
0,10 (0.004)
M
3,70 (0.146)
3,30 (0.130)
7,30 (0.287)
6,70 (0.264)
Gauge Plane
1
2
3
0,25 (0.010)
0,84 (0.033)
0,66 (0.026)
0°–10°
2,30 (0.091)
0,10 (0.004)
M
4,60 (0.181)
0,75 (0.030) MIN
1,70 (0.067)
1,50 (0.059)
1,80 (0.071) MAX
0,35 (0.014)
0,23 (0.009)
Seating Plane
0,08 (0.003)
0,10 (0.0040)
0,02 (0.0008)
4202506/B 06/2002
NOTES: A. All linear dimensions are in millimeters (inches).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion.
D. Falls within JEDEC TO-261 Variation AA.
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