TI LM337KTPRG3 3-terminal adjustable regulator Datasheet

LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003
D
D
D
D
INPUT
D
D
LM237, LM337 . . . KC (TO-220) PACKAGE
(TOP VIEW)
Output Voltage Range Adjustable From
–1.2 V to –37 V
Output Current Capability of 1.5 A Max
Input Regulation Typically 0.01% Per
Input-Voltage Change
Output Regulation Typically 0.3%
OUTPUT
INPUT
ADJUSTMENT
LM337 . . . KTE OR KTP PACKAGE
(TOP VIEW)
Peak Output Current Constant Over
Temperature Range of Regulator
OUTPUT
INPUT
D
Ripple Rejection Typically 77 dB
Direct Replacement for Industry-Standard
LM237 and LM337
INPUT
ADJUSTMENT
description/ordering information
The LM237 and LM337 are adjustable 3-terminal negative-voltage regulators capable of supplying in excess
of –1.5 A over an output voltage range of –1.2 V to –37 V. They are exceptionally easy to use, requiring only
two external resistors to set the output voltage and one output capacitor for frequency compensation. The
current design has been optimized for excellent regulation and low thermal transients. In addition, the LM237
and LM337 feature internal current limiting, thermal shutdown, and safe-area compensation, making them
virtually immune to failure by overloads.
The LM237 and LM337 serve a wide variety of applications, including local on-card regulation, programmable
output-voltage regulation, and precision current regulation.
ORDERING INFORMATION
–25°C to 150°C
0°C
0 C to 125°C
125 C
ORDERABLE
PART NUMBER
PACKAGE†
TJ
TOP-SIDE
MARKING
TO-220 (KC)
Tube of 50
LM237KC
LM237
PowerFLEX (KTE)
Reel of 2000
LM337KTER
LM337
PowerFLEX (KTP)
Reel of 3000
LM337KTPR
L337
TO-220 (KC)
Tube of 50
LM337KC
LM337
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available
at www.ti.com/sc/package.
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.
PowerFLEX is a trademark of Texas Instruments.
Copyright  2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
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1
LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003
schematic diagram
ADJUSTMENT
OUTPUT
INPUT
absolute maximum ratings over operating temperature ranges (unless otherwise noted)†
Input-to-output differential voltage, VI – VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40 V
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
package thermal data (see Note 1)
PACKAGE
BOARD
PowerFLEX (KTE)
High K, JESD 51-5
θJC
3°C/W
θJA
23°C/W
PowerFLEX (KTP)
High K, JESD 51-5
19°C/W
28°C/W
TO-220 (KC)
High K, JESD 51-5
3°C/W
19°C/W
NOTE 1: Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
recommended operating conditions
2
IO
Output current
TJ
Operating virtual junction temperature
MIN
MAX
|VI – VO| ≤ 40 V,
P ≤ 15 W
10
1500
|VI – VO| ≤ 10 V,
P ≤ 15 W
6
1500
LM237
–25
150
LM337
0
125
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UNIT
mA
°C
LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003
electrical characteristics over recommended ranges of operating virtual junction temperature
(unless otherwise noted)
TEST CONDITIONS†
PARAMETER
Input regulation‡
VI – VO = –3 V to –40 V
Ripple rejection
VO = –10 V,
VO = –10 V,
Output regulation
LM237
MIN
TJ = 25°C
TJ = MIN to MAX
f = 120 HZ
f = 120 HZ,
CADJ = 10 µF
MAX
0.01
0.02
66
0.3%
0.02
0.01
0.04
0.05
0.02
0.07
60
66
50
0.5%
0.3%
50
70
1%
1.5%
Output-voltage
long-term drift
After 1000 h at TJ = MAX and VI – VO = –40 V
0.3%
Output noise
voltage
f = 10 HZ to 10 kHZ,
TJ = 25°C
%/V
mV
1%
|VO| ≥ 5 V
0.6%
UNIT
dB
77
|VO| ≤ 5 V
TJ = MIN to MAX
Peak output current
MAX
77
Output-voltage
change with
temperature
Minimum output
current to maintain
regulation
TYP
25
|VO| ≥ 5 V
IO = 10 mA to 1.5 A
MIN
60
|VO| ≤ 5 V
IO = 10 mA to 1.5 A,
TJ = 25°C
LM337
TYP
mV
0.6%
1%
0.3%
0.003%
1%
0.003%
|VI – VO| ≤ 40 V
2.5
5
2.5
10
|VI – VO| ≤ 10 V
1.2
3
1.5
6
mA
|VI – VO| ≤ 15 V
|VI – VO| ≤ 40 V,
TJ = 25°C
1.5
2.2
1.5
2.2
0.24
0.4
0.15
0.4
Adjustment-terminal
current
Change in
adjustment-terminal
current
VI – VO = – 2.5 V to –40 V,
IO = 10 mA to MAX
TJ = 25°C,
Reference voltage
(output to ADJ)
VI – VO = – 3 V to –40 V,
IO = 10 mA to 1.5 A,
P ≤ rated dissipation
TJ = 25°C
TJ = MIN to MAX
A
65
100
65
100
µA
2
5
2
5
µA
–1.225
–1.25
–1.275
–1.213
–1.25
–1.287
–1.2
–1.25
–1.3
–1.2
–1.25
–1.3
V
Thermal regulation
Initial TJ = 25°C,
10-ms pulse
0.002
0.02
0.003
0.04
%/W
† Unless otherwise noted, these specifications apply for the following test conditions |VI – VO| = 5 V and IO = 0.5 A. For conditions shown as MIN
or MAX, use the appropriate value specified under recommended operating conditions. All characteristics are measured with a 0.1-µF capacitor
across the input and a 1-µF capacitor across the output. Pulse-testing techniques are used to maintain the junction temperature as close to the
ambient temperature as possible. Thermal effects must be taken into account separately.
‡ Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003
electrical characteristics, TJ = 25°C
TEST CONDITIONS†
PARAMETER
Input regulation‡
VI – VO = –3 V to –40 V
Ripple rejection
VO = –10 V,
VO = –10 V,
Output regulation
IO = 10 mA to 1.5 A
Output noise voltage
f = 10 HZ to 10 kHZ
Minimum output current to maintain regulation
Peak output current
LM237, LM337
MIN
f = 120 HZ
CADJ = 10 µF,
f = 120 HZ
Reference voltage (output to ADJ)
MAX
0.01
0.04
60
66
50
|VO| ≥ 5 V
0.3%
UNIT
%/V
dB
77
|VO| ≤ 5 V
mV
1%
0.003%
|VI – VO| ≤ 40 V
2.5
10
|VI – VO| ≤ 10 V
1.5
6
|VI – VO| ≤ 15 V
1.5
2.2
|VI – VO| ≤ 40 V
0.15
0.4
Adjustment-terminal current
Change in adjustment-terminal current
TYP
VI – VO = – 2.5 V to –40 V,
VI – VO = – 3 V to –40 V,
P ≤ rated dissipation
IO = 10 mA to MAX
IO = 10 mA to 1.5 A,
–1.213
mA
A
65
100
µA
2
5
µA
–1.25
–1.287
V
† Unless otherwise noted, these specifications apply for the following test conditions |VI – VO| = 5 V and IO = 0.5 A. All characteristics are measured
with a 0.1-µF capacitor across the input and a 1-µF capacitor across the output. Pulse-testing techniques are used to maintain the junction
temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately.
‡ Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
4
POST OFFICE BOX 655303
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LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003
APPLICATION INFORMATION
LM237
or
LM337
OUTPUT
INPUT
VI
VO
ADJUSTMENT
R1
C1
C2
+
+
R2
ǒ Ǔ
R1 typically is 120 Ω.
R2
+ R1
–V
O
–1..25
*1
, where VO is the output in volts.
C1 is a 1-µF solid tantalum capacitor required only if the regulator is more than 10 cm (4 in) from the power-supply filter capacitor.
C2 is a 1-µF solid tantalum or 10-µF aluminum electrolytic capacitor required for stability.
Figure 1. Adjustable Negative-Voltage Regulator
LM237
or
LM337
RS
VI
INPUT
OUTPUT
VO
ADJUSTMENT
RS =
1.25 V
ILIMIT
Figure 2. Current-Limiting Circuit
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5
PACKAGE OPTION ADDENDUM
www.ti.com
19-May-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
LM237KC
ACTIVE
TO-220
KC
3
LM237KTER
OBSOLETE
PFM
KTE
3
50
Lead/Ball Finish
TBD
CU SNPB
TBD
Call TI
MSL Peak Temp (3)
Level-NC-NC-NC
Call TI
LM337KC
ACTIVE
TO-220
KC
3
50
TBD
CU SNPB
Level-NC-NC-NC
LM337KTER
ACTIVE
PFM
KTE
3
2000
TBD
CU SNPB
Level-1-220C-UNLIM
LM337KTPR
ACTIVE
PFM
KTP
2
3000
TBD
CU SNPB
Level-1-220C-UNLIM
LM337KTPRG3
ACTIVE
PFM
KTP
2
3000 Green (RoHS &
no Sb/Br)
CU SN
Level-1-260C-UNLIM
LM337Y
OBSOLETE
XCEPT
Y
0
Call TI
Call TI
TBD
(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) 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.
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.
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provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
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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
MPFM001E – OCTOBER 1994 – REVISED JANUARY 2001
KTE (R-PSFM-G3)
PowerFLEX PLASTIC FLANGE-MOUNT
0.375 (9,52)
0.080 (2,03)
0.070 (1,78)
0.365 (9,27)
0.360 (9,14)
0.050 (1,27)
0.040 (1,02)
0.350 (8,89)
0.220 (5,59)
NOM
0.010 (0,25) NOM
Thermal Tab
(See Note C)
0.360 (9,14)
0.350 (8,89)
0.295 (7,49)
NOM
0.320 (8,13)
0.310 (7,87)
0.420 (10,67)
0.410 (10,41)
1
3
0.025 (0,63)
0.031 (0,79)
0.100 (2,54)
Seating Plane
0.004 (0,10)
0.010 (0,25) M
0.005 (0,13)
0.001 (0,03)
0.200 (5,08)
0.041 (1,04)
0.031 (0,79)
0.010 (0,25)
NOM
Gage Plane
3°– 6°
0.010 (0,25)
4073375/F 12/00
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
The center lead is in electrical contact with the thermal tab.
Dimensions do not include mold protrusions, not to exceed 0.006 (0,15).
Falls within JEDEC MO-169
PowerFLEX is a trademark of Texas Instruments.
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MECHANICAL DATA
MPSF001F – JANUARY 1996 – REVISED JANUARY 2002
KTP (R-PSFM-G2)
PowerFLEX PLASTIC FLANGE-MOUNT PACKAGE
0.080 (2,03)
0.070 (1,78)
0.243 (6,17)
0.233 (5,91)
0.228 (5,79)
0.218 (5,54)
0.050 (1,27)
0.040 (1,02)
0.010 (0,25) NOM
0.130 (3,30) NOM
0.215 (5,46)
NOM
0.247 (6,27)
0.237 (6,02)
Thermal Tab
(See Note C)
0.287 (7,29)
0.277 (7,03)
0.381 (9,68)
0.371 (9,42)
0.100 (2,54)
0.090 (2,29)
0.032 (0,81) MAX
Seating Plane
0.090 (2,29)
0.180 (4,57)
0.004 (0,10)
0.005 (0,13)
0.001 (0,02)
0.031 (0,79)
0.025 (0,63)
0.010 (0,25) M
0.010 (0,25) NOM
Gage Plane
0.047 (1,19)
0.037 (0,94)
0.010 (0,25)
2°–ā6°
4073388/M 01/02
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
The center lead is in electrical contact with the thermal tab.
Dimensions do not include mold protrusions, not to exceed 0.006 (0,15).
Falls within JEDEC TO-252 variation AC.
PowerFLEX is a trademark of Texas Instruments.
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