STMicroelectronics LM217L, LM317L User Manual
LM217L
LM317L
LOW CURRENT
1.2 TO 37V ADJUSTABLE VOLTAGE REGULATOR
■ OUTPUT VOLTAGE RANGE: 1.2 TO 37V
■ OUTPUT CURRENT IN EXCESS OF 100 mA
■ LINE REGULATION TYP. 0.01%
■ LOAD REGULATION TYP. 0.1%
■ THERMAL OVERLOAD PROTECTION
■ SHORT CIRCUIT PROTECTION
■ OUTPUT TRANSISTOR SAFE AREA
COMPENSATION
■ FLOATING OPERATION FOR HIGH
VOLTAGE APPLICATIONS
DESCRIPTION
The LM217L/LM317L are monolithic integrated
circuit in SO-8 and TO-92 packages intended for
use as positive adjustable voltage regulators.
They are designed to supply until 100 mA of load
current with an output voltage adjustable over a
1.2 to 37V range.
The nominal output voltage is selected by means
of only a resistive divider, making the device
Figure 1: Sche m atic Diagram
TO-92 SO-8
exceptionally easy to use and eliminating the
stocking of many fixed regulators
Rev. 2
1/13March 2005
LM217L/LM317L
Table 1: Absolute Maximum Ratings
Symbol Parameter Value Unit
V
I - VO
P
T
opr
T
stg
Figure 2: Pin Con nection (top view)
Input-Output Differential Voltage
Power Dissipation
d
Operating Junction T emperature
Range
Storage Temperature Range
40 V
Internally Limited
for LM217L -40 to 125
for LM317L 0 to 125
-55 to 150 °C
PIN 1 = ADJUST
PIN 2 = IN
BOTTOM VIEW
PIN 3 = OUT
°C
SO-8 TO-92
Table 2: Order Codes
TYPE SO-8 (TUBE) (*) TO-92 (TUBE) (#)
LM217L LM217LD LM217LZ
LM317L LM317LD LM317LZ
(*) Avai l abl e in Tape & Reel wi t h the suffix "-TR".
(#) Avail able in Tape & Reel wi th the suffix "-T R" and in Ammopak with the suffix "-AP". Please note that in these cases pins are shaped
accordi ng to Tape & Reel specifications.
Figure 3: Test Circuit
2/13
LM217L/LM317L
Table 3: Electrical Characteristics Of LM217L (refer to th e test circuits, TJ = - 40 to 125°C,
- VO = 5 V, IO = 40 mA, unless otherwise specified).
V
I
Symbol Parameter Test Conditions Min. Typ. Max. Unit
∆V
∆V
I
∆I
V
∆V
I
O(min)
I
O(max)
SVR Supply Voltage Rejection (*) T
Line Regulation VI - VO = 3 to 40 V
O
Load Regulation VO ≤ 5 V
O
Adjustment Pin Current 50 100 µA
ADJ
Adjustment Pin Current VI - VO = 3 to 40 V IO = 5 to 100 mA
ADJ
Reference Voltage VI - VO = 3 to 40 V IO = 10 to 500 mA
REF
Output Voltage
O/VO
Temperature Stability
I
< 20 mA
L
I
= 5 to 100 mA
O
V
≥ 5 V
O
I
= 5 to 100 mA
O
P
< 625 mW
d
P
< 625 mW
d
= 25°C 0.01 0.02 %/V
T
J
0.02 0.05
= 25°C 5 15 mV
T
J
20 50
= 25°C 0.1 0.3 %
T
J
0.3 1
0.2 5 µA
1.21.251.3 V
0.7 %
Minimum Load Current VI - VO = 40 V 3.5 5 mA
Maximum Output Current VI - VO = 3 to 13 V 100 200 mA
- VO = 40 V 50
V
I
eN Output Noise Vo ltage B = 10 Hz to 10 KHzT
= 25°C
J
f = 120 Hz
= 25°C 0.003 %
J
C
= 0 65 dB
ADJ
C
= 10 µF 66 80
ADJ
(*) CADJ is connected between Adjust pin and Ground.
3/13
LM217L/LM317L
Table 4: Electrical Characteristics Of LM317L (refer to th e test circuits, TJ = 0 to 125°C,
- VO = 5 V, IO = 40 mA, unless otherwise specified).
V
I
Symbol Parameter Test Conditions Min. Typ. Max. Unit
∆V
∆V
I
∆I
V
∆V
I
O(min)
I
O(max)
SVR Supply Voltage Rejection (*) T
Line Regulation VI - VO = 3 to 40 V
O
Load Regulation VO ≤ 5 V
O
Adjustment Pin Current 50 100 µA
ADJ
Adjustment Pin Current VI - VO = 3 to 40 V IO = 5 to 100 mA
ADJ
Reference Voltage VI - VO = 3 to 40 V IO = 5 to 100 mA
REF
Output Voltage
O/VO
Temperature Stability
I
< 20 mA
L
I
= 5 to 100 mA
O
V
≥ 5 V
O
I
= 5 to 100 mA
O
P
< 625 mW
d
P
< 625 mW
d
= 25°C 0.01 0.04 %/V
T
J
0.02 0.07
= 25°C 5 25 mV
T
J
20 70
= 25°C 0.1 0.5 %
T
J
0.3 1.5
0.2 5 µA
1.21.251.3 V
0.7 %
Minimum Load Current VI - VO = 40 V 3.5 5 mA
Maximum Output Current VI - VO = 3 to 13 V 100 200 mA
- VO = 40 V 50
V
I
eN Output Noise Vo ltage B = 10 Hz to 10 KHzT
= 25°C
J
f = 120 Hz
= 25°C 0.003 %
J
C
= 0 65 dB
ADJ
C
= 10 µF 66 80
ADJ
(*) CADJ is connected between Adjust pin and Ground.
Figure 4: Current Limit
Figure 5: Minimum Operating Current
4/13
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