SLCS144 − JULY 2004
D Output Voltage Range Adjustable From
D
D
D
D
D
D OR PW PACKAGE
(TOP VIEW)
1.2 V to 32 V When Used With an External
Resistor Divider
Output Current Capability of 100 mA
Input Regulation Typically 0.01% Per
Input-Voltage Change
Output Regulation Typically 0.5%
Ripple Rejection Typically 80 dB
For Higher Output Current Requirements,
See LM317M (500 mA) and LM317 (1.5 A)
INPUT
OUTPUT
OUTPUT
ADJUSTMENT
1
8
2
7
3
6
4
5
NC
OUTPUT
OUTPUT
NC
NC − No internal connection
OUTPUT terminals are all internally connected.
LP PACKAGE
(TOP VIEW)
description/ordering information
INPUT
The LM317L is an adjustable three-terminal
positive-voltage regulator capable of supplying
100 mA over an output-voltage range of 1.2 V to
32 V. It is exceptionally easy to use and requires
only two external resistors to set the output
voltage.
OUTPUT
ADJUSTMENT
In addition to higher performance than fixed
regulators, this regulator offers full overload
protection, available only in integrated circuits. Included on the chip are current-limiting and thermal-overload
protection. All overload-protection circuitry remains fully functional, even when ADJUSTMENT is disconnected.
Normally, no capacitors are needed unless the device is situated far from the input filter capacitors, in which
case an input bypass is needed. An optional output capacitor can be added to improve transient response.
ADJUSTMENT can be bypassed to achieve very high ripple rejection, which is difficult to achieve with standard
three-terminal regulators.
In addition to replacing fixed regulators, the LM317L regulator is useful in a wide variety of other applications.
Since the regulator is floating and sees only the input-to-output differential voltage, supplies of several hundred
volts can be regulated as long as the maximum input-to-output differential is not exceeded. Its primary
application is that of a programmable output regulator, but by connecting a fixed resistor between
ADJUSTMENT and OUTPUT, this device can be used as a precision current regulator. Supplies with electronic
shutdown can be achieved by clamping ADJUSTMENT to ground, programming the output to 1.2 V, where most
loads draw little current.
The LM317LC is characterized for operation over the virtual junction temperature range of 0°C to 125°C.
ORDERING INFORMATION
SOIC (D)
0°C to 125°C
ORDERABLE
PART NUMBER
PACKAGE†
TJ
TO-226 / TO-92 (LP)
TSSOP (PW)
Tube of 75
LM317LCD
Reel of 2500
LM317LCDR
Bulk of 1000
LM317LCLP
Reel of 2000
LM317LCLPR
Tube of 150
LM317LCPW
Reel of 2000
LM317LCPWR
TOP-SIDE
MARKING
L317LC
L317LC
L317LC
† 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.
Copyright 2004, Texas Instruments Incorporated
!" #!$% &"'
&! #" #" (" " ") !"
&& *+' &! #", &" ""%+ %!&"
", %% #""'
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SLCS144 − JULY 2004
schematic
INPUT
310 Ω
310 Ω
190 Ω
251 W
5.6 kΩ
2.1 kΩ
200 kΩ
11.5 kΩ
124 Ω
1.4 Ω
2.12 kΩ
30
pF
195 Ω
360 Ω
5.3 kΩ
5.7 kΩ
70 Ω
5.1 kΩ
30
pF
670 Ω
10.8 kΩ
OUTPUT
ADJUSTMENT
40 Ω
NOTE A: All component values shown are nominal.
absolute maximum ratings over operating temperature range (unless otherwise noted)†
Input-to-output differential voltage, Vl − VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Package thermal impedance, θJA (see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
LP package . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . 149°C/W
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°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.
NOTES: 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.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN
2
VI − VO
IO
Input-to-output voltage differential
TJ
Operating virtual-junction temperature
Output current
POST OFFICE BOX 655303
LM317LC
• DALLAS, TEXAS 75265
MAX
UNIT
35
V
2.5
100
mA
0
125
°C
SLCS144 − JULY 2004
electrical characteristics over recommended operating virtual-junction temperature range (unless
otherwise noted)
TEST CONDITIONS†
PARAMETER
LM317LC
MIN
TYP
MAX
0.02
VI − VO = 5 V to 35 V
TJ = 25°C
IO = 2.5 mA to 100 mA
0.01
Input voltage regulation (see Note 3)
0.02
0.05
VO = 10 V,
f = 120 Hz
VO = 10 V,
10-µF capacitor between ADJUSTMENT and ground
65
Ripple regulation
Output voltage regulation
VI = 5 V to 35 V,
IO = 2.5 mA to 100 mA,
TJ = 25°C
VO ≤ 5 V
VI = 5 V to 35 V,
IO = 2.5 mA to 100 mA
66
UNIT
%V
dB
80
25
mV
VO ≥ 5 V
5
mV/V
VO ≤ 5 V
VO ≥ 5 V
50
mV
10
mV/V
10
mV/V
Output voltage long-term drift
TJ = 0°C to 125°C
After 1000 hours at TJ = 125°C and VI − VO = 35 V
Output noise voltage
f = 10 Hz to 10 kHz,
30
Minimum output current to maintain regulation
VI − VO = 35 V
VI − VO ≤ 35 V
Output voltage change with temperature
Peak output current
3
TJ = 25°C
1.5
100
ADJUSTMENT current
Change in ADJUSTMENT current
Reference voltage (output to ADJUSTMENT)
VI − VO = 2.5 V to 35 V,
VI − VO = 5 V to 35 V,
P ≤ rated dissipation
IO = 2.5 mA to 100 mA
IO = 2.5 mA to 100 mA,
1.2
10
mV/V
µV/V
2.5
200
mA
mA
50
100
µA
0.2
5
µA
1.25
1.3
V
† Unless otherwise noted, these specifications apply for the following test conditions: VI − VO = 5 V and IO = 40 mA. Pulse-testing techniques must
be used that maintain the junction temperature as close to the ambient temperature as possible. All characteristics are measured with a 0.1-µF
capacitor across the input and a 1-µF capacitor across the output.
NOTE 3: Input voltage regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
POST OFFICE BOX 655303
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3
SLCS144 − JULY 2004
APPLICATION INFORMATION
LM317L
VI
Input
VO
(see Note B)
Output
Adjustment
35 V
R1
470 Ω
C1 = 0.1 µF
(see Note A)
LM317L
Input
Adjustment
C2 = 1 µF
(see Note C)
R1 = 120 Ω
R3 =
820 Ω
NOTES: A. Use of an input bypass capacitor is recommended if
regulator is far from the filter capacitors.
B. Output voltage is calculated from the equation:
V O + V ref 1 ) R2
R1
where: Vref equals the difference between OUTPUT and
ADJUSTMENT voltages (≈1.25 V).
C. Use of an output capacitor improves transient response,
but is optional.
ǒ
Ǔ
VO
(see Note A)
−10 V
C1 = 0.1 µF
R2
Output
R2 = 3 kΩ
1N4002
NOTE A: Output voltage is calculated from the equation:
V O + V ref 1 ) R2 ) R3 * 10 V
R1
where: Vref equals the difference between OUTPUT
and ADJUSTMENT voltages (≈1.25 V).
ǒ
Figure 1. Adjustable Voltage Regulator
Ǔ
Figure 2. 0-V to 30-V Regulator Circuit
LM317L
VI
Input
VO
(see Note A)
Output
R1 =
470 Ω
Adjustment
C1 =
0.1 µF
D1†
1N4002
+
R2 =
10 kΩ
+
−
C2 = 10 µF
−
C3 = 1 µF
LM317L
VI
† D1 discharges C2 if output is shorted to ground.
NOTE A: Use of an output capacitor improves transient response, but is
optional.
Figure 3. Regulator Circuit
With Improved Ripple Rejection
4
POST OFFICE BOX 655303
Input
Output
Adjustment
R1
I limit + 1.25
R1
Figure 4. Precision Current-Limiter Circuit
• DALLAS, TEXAS 75265
SLCS144 − JULY 2004
APPLICATION INFORMATION
R2 = 1.5 kΩ
LM317L
R1 = 470 Ω
VI
Input
Adjustment
VI
Input
Adjustment
Output
VO = 15 V
Output
LM317L
R1 =
470 Ω
1N4002
LM317L
Input
Output
Adjustment
C1 = 0.1 µF
C2 = 1 µF
VO
R3 = 50 kΩ
R3 =
240 Ω
R2 = 5.1 kΩ
Output
Adjust
R4 =
2 kΩ
Figure 5. Tracking Preregulator Circuit
2N2905
C1 = 25 µF
Figure 6. Slow-Turnon 15-V Regulator Circuit
LM317L
VI
Input
Output
Adjustment
240 Ω
LM317L
VI
Input
24 Ω
1.1 kΩ
ICHG
Output
Adjustment
VBE
Figure 7. 50-mA Constant-Current
Battery-Charger Circuit
POST OFFICE BOX 655303
R+
V BE
I CHG
V−
Figure 8. Current-Limited 6-V Charger
• DALLAS, TEXAS 75265
5
SLCS144 − JULY 2004
APPLICATION INFORMATION
TIP73
2N2905
VI
500 Ω
5 kΩ
22 Ω
LM317L
Input
Output
Adjustment
VO
120 Ω
1N4002
10 µF
RL†
5 kΩ
10 µF‡
† Minimum load current is 30 mA.
‡ Optional capacitor improves ripple rejection.
Figure 9. High-Current Adjustable Regulator
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
47 µF
PACKAGE OPTION ADDENDUM
www.ti.com
25-Feb-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
Lead/Ball Finish
MSL Peak Temp (3)
LM317LCD
ACTIVE
SOIC
D
8
75
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
LM317LCDR
ACTIVE
SOIC
D
8
2500
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
LM317LCLP
ACTIVE
TO-92
LP
3
1000
None
CU SNPB
Level-NC-NC-NC
LM317LCLPR
ACTIVE
TO-92
LM317LCPW
ACTIVE
TSSOP
LP
3
2000
None
CU SNPB
Level-NC-NC-NC
PW
8
150
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
LM317LCPWR
ACTIVE
TSSOP
PW
8
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
(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 - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
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" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
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 1
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
0.205 (5,21)
0.175 (4,44)
0.165 (4,19)
0.125 (3,17)
DIA
0.210 (5,34)
0.170 (4,32)
Seating
Plane
0.157 (4,00) MAX
0.050 (1,27)
C
0.500 (12,70) MIN
0.104 (2,65)
FORMED LEAD OPTION
0.022 (0,56)
0.016 (0,41)
0.016 (0,41)
0.014 (0,35)
STRAIGHT LEAD OPTION
D
0.135 (3,43) MIN
0.105 (2,67)
0.095 (2,41)
0.055 (1,40)
0.045 (1,14)
1
2
3
0.105 (2,67)
0.080 (2,03)
0.105 (2,67)
0.080 (2,03)
4040001-2 /C 10/01
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Lead dimensions are not controlled within this area
D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92)
E. Shipping Method:
Straight lead option available in bulk pack only.
Formed lead option available in tape & reel or ammo pack.
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1
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
0.539 (13,70)
0.460 (11,70)
1.260 (32,00)
0.905 (23,00)
0.650 (16,50)
0.610 (15,50)
0.020 (0,50) MIN
0.098 (2,50)
0.384 (9,75)
0.335 (8,50)
0.748 (19,00)
0.217 (5,50)
0.433 (11,00)
0.335 (8,50)
0.748 (19,00)
0.689 (17,50)
0.114 (2,90)
0.094 (2,40)
0.114 (2,90)
0.094 (2,40)
0.169 (4,30)
0.146 (3,70)
DIA
0.266 (6,75)
0.234 (5,95)
0.512 (13,00)
0.488 (12,40)
TAPE & REEL
4040001-3 /C 10/01
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Tape and Reel information for the Format Lead Option package.
2
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MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
0,65
14
0,10 M
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°– 8°
A
0,75
0,50
Seating Plane
0,15
0,05
1,20 MAX
PINS **
0,10
8
14
16
20
24
28
A MAX
3,10
5,10
5,10
6,60
7,90
9,80
A MIN
2,90
4,90
4,90
6,40
7,70
9,60
DIM
4040064/F 01/97
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-153
POST OFFICE BOX 655303
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