LM137HMWA [TI]
IC VREG 1.2 V-37 V ADJUSTABLE NEGATIVE REGULATOR, UUC, WAFER, Adjustable Negative Single Output Standard Regulator;
| 型号： | LM137HMWA |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | IC VREG 1.2 V-37 V ADJUSTABLE NEGATIVE REGULATOR, UUC, WAFER, Adjustable Negative Single Output Standard Regulator |
| 文件： | 总17页 (文件大小：495K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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information and details on our current products and services.
May 1999
LM137/LM337
3-Terminal Adjustable Negative Regulators
n 77 dB ripple rejection
n Excellent rejection of thermal transients
General Description
The LM137/LM337 are adjustable 3-terminal negative volt-
age 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 re-
sistors to set the output voltage and 1 output capacitor for
frequency compensation. The circuit design has been opti-
mized 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.
n 50 ppm/˚C temperature coefficient
n Temperature-independent current limit
n Internal thermal overload protection
n P+ Product Enhancement tested
n Standard 3-lead transistor package
n Output is short circuit protected
LM137 Series Packages and Power
Capability
The LM137/LM337 serve a wide variety of applications in-
cluding local on-card regulation, programmable-output volt-
age regulation or precision current regulation. The LM137/
LM337 are ideal complements to the LM117/LM317
adjustable positive regulators.
Rated
Power
Dissipation
20W
Design
Load
Current
1.5A
Device
Package
LM137/337
TO-3 (K)
Features
TO-39 (H)
TO-220 (T)
2W
0.5A
n Output voltage adjustable from −1.2V to −37V
n 1.5A output current guaranteed, −55˚C to +150˚C
n Line regulation typically 0.01%/V
n Load regulation typically 0.3%
LM337
LM337
15W
1.5A
SOT-223
(MP)
2W
1A
n Excellent thermal regulation, 0.002%/W
Typical Applications
Comparison between SOT-223 and
D-Pak (TO-252) Packages
Adjustable Negative Voltage Regulator
DS009067-31
Scale 1:1
DS009067-1
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
© 1999 National Semiconductor Corporation
DS009067
www.national.com
Absolute Maximum Ratings (Notes 1, 4)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM337
0˚C to +125˚C
−65˚C to +150˚C
300˚C
Storage Temperature
Lead Temperature (Soldering, 10 sec.)
Plastic Package (Soldering, 4 sec.)
ESD Rating
260˚C
2k Volts
Power Dissipation
Internally Limited
40V
Input-Output Voltage Differential
Operating Junction Temperature Range
LM137
−55˚C to +150˚C
Electrical Characteristics
(Note 1)
Parameter
Conditions
LM137
LM337
Units
Min
Typ
Max
Min
Typ
Max
=
Line Regulation
Tj 25˚C, 3V ≤ |VIN − VOUT| ≤ 40V
0.01
0.02
0.01
0.04
%/V
=
(Note 2) IL 10 mA
=
Load Regulation
Tj 25˚C, 10 mA ≤ IOUT ≤ IMAX
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
Tj 25˚C, 10 ms Pulse
Adjustment Pin Current
Adjustment Pin Current Charge
10 mA ≤ IL ≤ IMAX
2
2
µA
3.0V ≤ |VIN − VOUT| ≤ 40V,
=
TA 25˚C
=
Reference Voltage
Tj 25˚C (Note 3)
−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
3V ≤ |VIN − VOUT| ≤ 40V, (Note 3)
10 mA ≤ IOUT ≤ IMAX, P ≤ PMAX
3V ≤ |VIN − VOUT| ≤ 40V, (Note 2)
10 mA ≤ IOUT ≤ IMAX, (Note 2)
TMIN ≤ Tj ≤ TMAX
Line Regulation
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
%
Load Regulation
Temperature Stability
Minimum Load Current
%
|VIN − VOUT| ≤ 40V
5
3
10
6
mA
mA
|VIN − VOUT| ≤ 10V
Current Limit
|VIN − VOUT| ≤ 15V
K, MP and T Package
H 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
= =
40V, Tj 25˚C
|VIN − VOUT
|
K, MP and T Package
H 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
dB
=
CADJ 10 µF
66
77
66
77
dB
=
Long-Term Stability
Tj 125˚C, 1000 Hours
0.3
1
15
3
0.3
12
1
15
3
%
Thermal Resistance, Junction to H Package
12
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
Case
K Package
T Package
2.3
2.3
4
Thermal Resistance, Junction to H Package
140
35
140
35
Ambient (No Heat Sink)
K Package
T Package
MP Package
50
170
˚C/W
˚C/W
=
Note 1: Unless otherwise specified, these specifications apply −55˚C ≤ T ≤ +150˚C for the LM137, 0˚C ≤ T ≤ +125˚C for the LM337; V − V
IN OUT
5V; and I
OUT
j
j
=
=
0.1A for the TO-39 package and I
OUT
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-39 and SOT-223 (see Application Hints), and 20W for the TO-3, and TO-220. I
SOT-223 and TO-220 packages, and 0.2A for the TO-39 package.
is 1.5A for the TO-3,
MAX
Note 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 cov-
1
ered under the specification for thermal regulation. Load regulation is measured on the output pin at a point
⁄8" below the base of the TO-3 and TO-39 packages.
Note 3: Selected devices with tightened tolerance reference voltage available.
Note 4: Refer to RETS137H drawing for LM137H or RETS137K drawing for LM137K military specifications.
www.national.com
2
Schematic Diagram
DS009067-2
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 espe-
cially severe since power dissipation is large. Thermal regu-
lation 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 inde-
pendent of electrical regulation or temperature coefficient,
and occurs within 5 ms to 50 ms after a change in power dis-
sipation. Thermal regulation depends on IC layout as well as
electrical design. The thermal regulation of a voltage regula-
tor 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.
DS009067-3
=
LM137, V
−10V
OUT
=
V
− V
OUT
−40V
IN
=
→
→
0A
I
0A
0.25A
IL
Vertical sensitivity, 5 mV/div
FIGURE 1.
In Figure 1, 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 x 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 2, 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).
3
www.national.com
Thermal Regulation (Continued)
TO-220
Plastic Package
DS009067-4
=
LM137, V
−10V
OUT
=
V
− V
0A
−40V
→
0.25A 0A
IN
OUT
=
→
I
L
Horizontal sensitivity, 20 ms/div
FIGURE 2.
Connection Diagrams
DS009067-7
TO-3
Front View
Order Number LM337T
Metal Can Package
See NS Package Number T03B
3-Lead SOT-223
DS009067-34
DS009067-5
Front View
Case is Input
Order Number LM337IMP
Bottom View
Package Marked N02ASee NS Package Number MA04A
Order Number LM137K/883
LM137KPQML and LM137KPQMLV(Note 5)
See NS Package Number K02C
Order Number LM337K STEEL
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.
See NS Package Number K02A
HEATSINKING SOT-223 PACKAGE PARTS
TO-39
The SOT-223 (“MP”) 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.
Metal Can Package
Figures 3, 4 show the information for the SOT-223 package.
Figure 4 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 tem-
perature of 125˚C.
DS009067-6
Case Is Input
Note 5: See STD Mil DWG 5962P99517 for Radiation Tolerant Devices
Bottom View
Order Number LM137H, LM137H/883 or LM337H
LM137HPQML and LM137HPQMLV(Note 5)
See NS Package Number H03A
www.national.com
4
Application Hints (Continued)
Typical Applications
Adjustable Lab Voltage Regulator
DS009067-32
FIGURE 3. θ(J−A) vs Copper (2 ounce) Area for the
SOT-223 Package
DS009067-9
Full output current not available
at high input-output voltages
*The 10 µF capacitors are optional to improve ripple rejection
Current Regulator
DS009067-33
DS009067-11
FIGURE 4. Maximum Power Dissipation vs TAMB for
the SOT-223 Package
Please see AN1028 for power enhancement techniques to
be used with the SOT-223 package.
Negative Regulator with Protection Diodes
DS009067-13
*
When C is larger than 20 µF, D1 protects the LM137 in case the input
L
supply is shorted
**
When C2 is larger than 10 µF and −V
is larger than −25V, D2
protects the LM137 in case the output is shorted
OUT
5
www.national.com
Typical Applications (Continued)
High Stability −10V Regulator
*
−5.2V Regulator with Electronic Shutdown
DS009067-14
DS009067-10
*Minimum output −1.3V when control input is low
Adjustable Current Regulator
DS009067-12
www.national.com
6
Typical Performance Characteristics (K Steel and T Packages)
Load Regulation
Current Limit
Adjustment Current
DS009067-16
DS009067-18
DS009067-17
Dropout Voltage
Temperature Stability
Minimum Operating Current
DS009067-19
DS009067-20
DS009067-21
Ripple Rejection
Ripple Rejection
Ripple Rejection
DS009067-22
DS009067-23
DS009067-24
Output Impedance
Line Transient Response
Load Transient Response
DS009067-26
DS009067-27
DS009067-25
7
www.national.com
Physical Dimensions inches (millimeters) unless otherwise noted
Metal Can Package (H)
Order Number LM137H, LM137H/883 or LM337H
NS Package Number H03A
www.national.com
8
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Metal Can Package (K)
Order Number LM337K STEEL
NS Package Number K02A
Mil-Aero Metal Can Package (K)
Order Number LM137K/883
NS Package Number K02C
9
www.national.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
3-Lead SOT-223 Package
Order Number LM337IMP
NS Package Number M04A
www.national.com
10
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
TO-220 Plastic Package (T)
Order Number LM337T
NS Package Number T03B
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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
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Tel: 1-800-272-9959
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Products > Analog - Regulators > Linear Regulators - Standard/NPN > Negative Voltage - Adjustable > LM137
Product Folder
LM137
3-Terminal Adjustable Negative Regulator
Generic P/N 137
Contents
Parametric Table
Multiple Output Capability No
l
l
l
l
General Description
Features
Datasheet
Package Availability, Models, Samples
& Pricing
On/Off Pin
No
Input Voltage, min (Volt)
Input Voltage, max (Volt)
Output Current, max
-40
-4.20
1.5 Amps
l
Application Notes
Output Voltage, min (Volt) -37
Output Voltage, max (Volt) -1.20
General Description
The LM137/LM337 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.
The LM137/LM337 serve a wide variety of applications including local on-card regulation,
programmable-output voltage regulation or precision current regulation. The LM137/LM337
are ideal complements to the LM117/LM317 adjustable positive regulators.
Features
l
l
l
l
l
Output voltage adjustable from -1.2V to -37V
1.5A output current guaranteed, -55°C to +150°C
Line regulation typically 0.01%/V
Load regulation typically 0.3%
Excellent thermal regulation, 0.002%/W
l
l
l
l
l
77 dB ripple rejection
Excellent rejection of thermal transients
50 ppm/°C temperature coefficient
Temperature-independent current limit
Internal thermal overload protection
+
l
l
l
P Product Enhancement tested
Standard 3-lead transistor package
Output is short circuit protected
LM137 Series Packages and Power Capability
Rated
Power
Design
Load
Device
Package
Dissipation Current
LM137/337 TO-3 (K)
TO-39 (H)
20W
2W
1.5A
0.5A
1.5A
1A
LM337
LM337
TO-220 (T)
15W
SOT-223 (MP) 2W
Datasheet
Size
(in Kbytes)
Title
Date
Receive via Email
Download
View Online
LM137/LM337 3-Terminal Adjustable Negative Regulators 401 Kbytes 16-Jun-99 View Online Download Receive via Email
LM137 Mil-Aero (DESC) Datasheet MDLM137-H
LM137 Mil-Aero (DESC) Datasheet MDLM137-K
12 Kbytes
12 Kbytes
View Online Download Receive via Email
View Online Download Receive via Email
LM137 Mil-Aero Datasheet MNLM137-K
LM137 Mil-Aero Datasheet MNLM137AK-X
LM137 Mil-Aero Datasheet MNLM137-H
LM137 Mil-Aero Datasheet MNLM137A-H
110 Kbytes
15 Kbytes
17 Kbytes
15 Kbytes
View Online Download Receive via Email
View Online Download Receive via Email
View Online Download Receive via Email
View Online Download Receive via Email
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If you have trouble printing, see Printing Problems.
Package Availability, Models, Samples & Pricing
Samples
Package
Type
Models
Budgetary Pricing
Quantity $US each
Std
Pack
Size
&
Package
Marking
Part Number
Status
Electronic
Orders
# pins
SPICE IBIS
bag
of
500
.
Order Parts
LM137H
TO-39
TO-39
TO-39
TO-39
TO-3
3
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
250+
50+
50+
50+
50+
50+
50+
$7.0000
[logo]¢Z¢2¢T LM137HP+
tray
$14.0000 of
20
.
[logo] ¢Z¢S¢4¢A$E
LM137AH/883Q¢M
Order Parts
LM137AH/883
7703403XA
3
3
3
2
2
2
tray
of
20
[logo] ¢Z¢S¢4¢A$E Q¢M
27014 7703403XA
.
$7.8000
tray
$10.6000 of
20
.
[logo] ¢Z¢S¢4¢A$E
LM137H/883Q¢M
Order Parts
LM137H/883
LM137AK/883
7703403YA
tray
$16.4000 of
50
[logo] ¢Z¢S¢4¢A
LM137AK
Lifetime buy
N/A N/A
.
/883Q¢M $E
tray
of
50
[logo]¢Z¢S¢4¢A
7703403YA
Q¢M$E 27014
.
Order Parts
TO-3
Full production N/A N/A
Full production N/A N/A
$9.0000
$9.0000
tray
of
50
[logo]¢Z¢S¢4¢A
LM137K/883
Q¢M $E
.
Order Parts
LM137K/883
TO-3
tray
of
N/A
[logo]¢Z¢S¢4¢A$E
LM137WG/883Q
LM137WG/883
Ceramic SOIC 16
Preliminary
Preliminary
N/A N/A
N/A N/A
.
.
.
tray
of
N/A
[logo]¢Z¢S¢4¢A$E
LM137WG-
LM137WG-MPR Ceramic SOIC 16
MPR PROTO
tray
$17.3000 of
[logo] ¢Z¢S¢4¢A 27014 Q¢M
JM38510/11803BXA $E
JM38510/11803BX
JM38510/11804BY
JM38510/11803SX
JM38510/11804SY
TO-39
TO-3
3
2
3
2
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
50+
50+
50+
50+
20
[logo]¢Z¢S¢4¢A
JM38510/
11804BYA
27014 QS $E
tray
$20.0000 of
50
.
.
.
tray
$194.0000 of
20
[logo] ¢Z¢S¢4¢A$E 27014 Q
JM38510/11803SXA
TO-39
TO-3
[logo]¢Z¢S¢4¢A
JM38510/
tray
$200.0000 of
50
11804SYA
27014 Q$E
LM137H MDA
LM137K MDA
LM137KG MD8
LM137H MDS
LM137H MWA
LM137KG MW8
die
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
Full production N/A N/A
.
.
.
.
.
.
N/A
-
-
-
-
-
-
die
die
N/A
N/A
die
50+
$42.0000 100
N/A
wafer
wafer
N/A
Application Notes
Size
(in Kbytes)
Title
Date
Receive via Email
Download
View Online
AN-182: Inproving Power Supply Reliability with IC Power Regulators 76 Kbytes 4-Nov-95 View Online Download Receive via Email
LB-46: A New Production Technique for Trimming Voltage Regulators 91 Kbytes 28-Jun-96 View Online Download Receive via Email
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[Information as of 2-Sep-2000]
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