©2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.2
Features
Out put Cu rrent in Exc ess of 10 0mA
Output Adjustable Between 1.2V and 37V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe Area Compensation
Floating Operation For High Voltage Applications
Description
The LM317L is a 3-terminal adjustable positive voltage
regulator capable of supplying in excess of 100mA over an
output voltage range of 1 .2V to 37V. This voltage regulator
is exceptionally easy to use and requires only two external
resistors to set the output voltage.
TO-92
1. Adj 2. Output 3. Input
1
1
8-SOP
1. Input 2.3.6.7. Output
4. Adj 5.8 . NC
Internal Block Diagram
Rlimit
3Vin
Vo
1
Voltage
Reference
Vad
j
2
Protection
Circuitry
+
-
Input
Output
LM317L
3-Terminal 0.1A Positive Adjustable Regulator
LM317L
2
Absolute Maximum Ratings
Electrical Characteristics
(VI - VO = 5V, IO = 40mA, 0°C TJ +125°C, PDMAX = 625mW, unless otherwise specified)
Load and Line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty cycle is used.
Parameter Symbol Value Unit
Input-Output Voltage Differential VI - VO40 V
Power Dissipation PDInternally limited W
Operating Junction Temperature Range Tj0 ~ +125 °C
Storage Temperature Range TSTG -65 ~+125 °C
Parameter Symbol Conditions Min. Typ. Max. Unit
*Line Regulation Rline TA = +25°C
3V VI VO 40V -0.010.04
%/V
3V VI VO 40V - 0.02 0.07
*Load Regulation Rloal
TA = +25°C
10mA IO 100mA
VO 5V
VO 5V
-5
0.1 25
0.5 mV
%/ VO
10mA IO 100mA
VO 5V
VO 5V -20
0.3 70
1.5 mV
%/ VO
Adjustment Pin Current IADJ -- 50 100 µA
Adjustment Pin Current Change IADJ 3V VI - VO 40V
10mA IO 100mA
PD < PDMAX -0.2 5 µA
Reference Voltage VREF 3V < VI - VO <40V
10mA IO 100mA
PD PDMAX 1.20 1.25 1.30 V
Temperature Stability STT--0.7- %
Minimum Load Current to
Maintain Regulation IL(MIN) VI - VO = 40V - 3.5 10 mA
Maximum output Current IO(MAX) VI - VO 15V, PD < PDMAX 100 200 - mA
VI - VO 40V
PD < PDMAX, TA = +25°C25 50 -
RMS Noise, % of VOUT eNTA =+ 25°C, 10Hz < f <10KHz - 0.003 - %/ VO
Ripple Rejection RR VO = 10V, f = 120Hz
without CADJ
CADJ = 10uF 66 65
80 -dB
Long-Term Stability ST TJ = +125 °C, 1000 Hours - 0.3 - %
LM317L
3
Typical Application
Figu re 1. 5V Electronic Shutdown Reg ula to r
D1 protects the device during an input short circuit.
Figu re 2. Slow Tu rn-On Regula to r
Figure 3. Current Regulator
LM317L
Input
Output
LM317L
Input Output
LM317L
Input
Output
LM317L
4
Mechanical Dimensions
Package
0.46
±0.10
1.27TYP
(R2.29)
3.86MAX
[1.27
±0.20
]1.27TYP
[1.27
±0.20
]
3.60
±0.20
14.47
±0.40
1.02
±0.10
(0.25) 4.58
±0.20
4.58
+0.25
–0.15
0.38
+0.10
–0.05
0.38
+0.10
–0.05
TO-92
LM317L
5
Mechanical Dimensions (Continued)
Package
8-SOP
4.92
±0.20
0.194
±0.008
0.41
±0.10
0.016
±0.004
1.27
0.050
5.72
0.225
1.55
±0.20
0.061
±0.008
0.1~0.25
0.004~0.001
6.00
±0.30
0.236
±0.012
3.95
±0.20
0.156
±0.008
0.50
±0.20
0.020
±0.008
5.13
0.202 MAX
#1
#4 #5
0~8°
#8
0.56
0.022
()
1.80
0.071
MAX0.10
MAX0.004
MAX
MIN
+
0.10
-0.05
0.15+
0.004
-0.002
0.006
LM317L
6
Ordering Information
Product Number Package Operating Temperature
LM317LZ TO-92 0°C to + 125°C
LM317LM 8-SOP
LM317L
7
LM317L
3/5/02 0.0m 001
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2002 Fairchild Semicond uctor Corporation
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reasonably expected to result in a significant injury of the
user.
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reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effec tiv ene ss.
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