ST LM217M, LM317M User Manual
LM217M
LM317M
MEDIUM CURRENT
1.2 TO 37V ADJUSTABLE VOLTAGE REGULATOR
September 1997
■ OUTPUTVOLTAGERANGE : 1.2 TO37V
■ OUTPUTCURRENT IN EXCESSOF 500 mA
■ LINEREGULATION TYP.0.01%
■ LOADREGULATIONTYP. 0.1%
■ THERMALOVERLOADPROTECTION
■ SHORTCIRCUIT PROTECTION
■ OUTPUTTRANSISTORSAFEAREA
COMPENSATION
■ FLOATINGOPERATIONFOR HIGH
VOLTAGEAPPLICATIONS
DESCRIPTION
The LM217M/LM317M are monolithic integrated
circuits in TO-220,DPAK, SOT-82 and SOT-194
packages intended for use as positive adjustable
voltageregulators.
They are designedto supply until 500 mAof load
current with an output voltage adjustable over a
1.2 to 37V range.
The nominal output voltage is selectedby means
of only a resistive divider, making the device
exceptionally easy to use and eliminating the
stockingof many fixed regulators.
SCHEMATICDIAGRAM
SOT-82 SOT-194
DPAK
TO-252
TO-220
1/11
查询LM217M供应商
TEST CIRCUIT
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
i
-V
o
Input-Output Differential Voltage 40 V
P
d
Power Dissipation Internally Limited
T
opr
Operating Junction Temperature Range (*) forLM217M
forLM317M
-40 to 125
0to125
o
C
o
C
T
stg
StorageTemperature Range -55 to 150
o
C
(*) Re-Boot is not guaranteed for T
j
≥ 85
o
C
PINCONNECTION AND ORDERING NUMBERS
TO-220 SOT-82
Type TO-220 DPAK SOT-82 SOT-194
LM217M LM217MT LM217 M DT LM217MX LM217 M S
LM317M LM317MT LM317 M DT LM317MX LM317 M S
DPAK SOT-194
THERMAL DATA
Symbol Parameter SOT-82
SOT-194
DPAK
TO-220 Unit
R
thj-case
R
thj-amb
ThermalResistance Junction-case Max
ThermalResistance Junction-ambient Max
8
100
3
50
o
C/W
o
C/W
LM217M/LM317M
2/11
(*) CADJ is connected between Adjust pinand Ground.
ELECTRICALCHARACTERISTICS FOR LM317M (Refer to the test circuits, 0 ≤ T
j
≤ 125
o
C
V
i
-V
o
= 5 V, I
o
= 100 mA, P
d
≤ 7.5W, unlessotherwisespecified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
∆V
o
LineRegulation V
i
-V
o
= 3 to40 V T
j
=25
o
C 0.01 0.04 %/V
0.02 0.07 %/V
∆V
o
LoadRegulation V
o
≤ 5V
I
o
=10mA to 500 mA
T
j
=25
o
C525mV
20 70 mV
V
o
≥ 5V
I
o
=10mA to 500 mA
T
j
=25
o
C 0.1 0.5 % /V
o
0.3 1. 5 %/ V
o
I
ADJ
Adjustment Pin Current 50 100 µA
∆I
ADJ
Adjustment Pin Current V
i
-V
o
= 3 to40 V
I
o
=10mA to 500 mA
0.2 5 µ A
V
REF
ReferenceVoltage V
i
-V
o
= 3 to40 V
I
o
=10mA to 500 mA
1.2 1.25 1.3 V
∆
V
o
V
o
OutputVoltage Temperature
Stability
0.7 %
I
o(min)
Minimum Load Current V
i
-V
o
=40V 3.5 10 mA
I
o(max)
Maximum OutputCurrent V
i
-V
o
≤15V
V
i
-V
o
=40V, P
d
<P
dMAX
,T
j
=25
o
C
500 1000
200
mA
e
N
OutputNoise Voltage
(percentance of V
O
)
B = 10Hzto 10KHz
T
j
=25
o
C
0.003 %
SVR Supply Voltage Rejection (*) T
j
=25
o
C
f = 120Hz
C
ADJ
=0 65 dB
C
ADJ
=10µF66 80 dB
(*) CADJ is connected between Adjust pinand Ground.
ELECTRICALCHARACTERISTICS FOR LM217M (Refer to the test circuits, -40 ≤ T
j
≤ 125
o
C
V
i
-V
o
= 5 V, I
o
= 100 mA, P
d
≤ 7.5W, unlessotherwisespecified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
∆V
o
LineRegulation V
i
-V
o
= 3 to40 V T
j
=25
o
C 0.01 0.02 %/V
0.02 0.05 %/V
∆V
o
LoadRegulation V
o
≤ 5V
I
o
=10mA to 500 mA
T
j
=25
o
C515mV
20 50 mV
V
o
≥ 5V
I
o
=10mA to 500 mA
T
j
=25
o
C 0.1 0.3 % /V
o
0.3 1 %/V
o
I
ADJ
Adjustment Pin Current 50 100 µA
∆I
ADJ
Adjustment Pin Current V
i
-V
o
= 3 to40 V
I
o
=10mA to 500 mA
0.2 5 µ A
V
REF
Reference Voltage V
i
-V
o
= 3 to40 V
I
o
=10mA to 500 mA
1.2 1.25 1.3 V
∆
V
o
V
o
OutputVoltage Temperature
Stability
0.7 %
I
o(min)
Minimum LoadCurrent V
i
-V
o
=40V 3.5 5 mA
I
o(max)
Maximum OutputCurrent V
i
-V
o
≤15V
V
i
-V
o
=40V, P
d
<P
dMAX
,T
j
=25
o
C
500 1000
200
mA
e
N
OutputNoise Voltage
(percentance of V
O
)
B = 10Hzto 10KHz
T
j
=25
o
C
0.003 %
SVR Supply Voltage Rejection (*) T
j
=25
o
C
f = 120Hz
C
ADJ
=0 65 dB
C
ADJ
=10µF66 80 dB
LM217M/LM317M
3/11
Figure1 : Current Limit Figure2 : MinimumOperatingCurrent
Figure3 : Basic AdjustableRegulator.
LM317M
Figure4 : ThermalResistance& MaximumPower Dissipationvs P.C.B. Copper Lenght for DPAK
Pdmax calculatedfor T
a
=50
o
C
LM217M/LM317M
4/11
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