No Preview Available !
UNISONIC TECHNOLOGIES CO., LTD
LM317M
LINEAR INTEGRATED CIRCUIT
3-TERMINAL 0.5A POSITIVE
ADJUSTABLE REGULATOR
DESCRIPTION
The UTC LM317M is a 3-terminal adjustable positive voltage
regulator capable of supplying in excess of 500mA over an output
voltage range of 1.2V ~ 37V. This voltage regulator is exceptionally
easy to use and requires only two external resistors to set the output
voltage.
FEATURES
*Output Current in Excess of 0.5A
*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
1
SOT-223
12 3
TO-252
123
TO-220
*Pb-free plating product number: LM317ML
ORDERING INFORMATION
Normal
Order Number
Lead Free Plating
www.DaPtaaShceekt4aUg.coem
LM317M-AA3-0-R
LM317ML-AA3-0-R
SOT-223
LM317M-TA3-0-T
LM317ML-TA3-0-T
TO-220
LM317M-TN3-0-R
LM317ML-TN3-0-R
TO-252
LM317M-TN3-0-T
LM317ML-TN3-0-T
TO-252
Note: Pin assignment: I:VIN O:VOUT A:ADJ
Pin Assignment
123
AO
I
AO
I
AO
I
AO
I
Packing
Tape Reel
Tube
Tape Reel
Tube
LM317ML-AA3-0-R
(1)Packing Type
(2)Pin Assignment
(3)Package Type
(4)Lead Plating
(1) R: Tape Reel, T: Tube
(2) refer to Pin Assignment
(3) AA3: SOT-223, TA3: TO-220, TN3: TO-252
(4) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 6
QW-R101-014,B
LM317M
TYPICAL CHARACTERISTICS
Minimum Load Current
40
TJ=25℃
35
30
25
20
15
10
0.5
0.0
0
5 10 15 20 25 30 35 40
Input-output Differential Voltage, VIN-VOUT (V)
Adjustment Pin Current vs.Temperature
55
VIN-VOUT=5V, IoUT=5mA
50 VoUT=1.25V
45
VoUT=36V
40
35
30-25
0 25 50 75 100
Ambient Temperature, Ta (℃)
125
1.0
0.
9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
-25
Load Regulation vs. Temperature
VIN-VOUT=5V, Vo=1.25V
10mA≤IOUT≤500mA, Pulse test
0 25 50 75 100 125
Ambient Temperature, Ta (℃)
LINEAR INTEGRATED CIRCUIT
Peak Output Current vs. Input-Output Differential
Voltage
30
TJ=25℃
25
20
15
10
0.5
0.0 0
5 10 15 20 25 30 35 40
Input-output Differential Voltage, VIN-VOUT (V)
Ripple Rejection vs. Frequency
100
VIN=19V, VOUT=10V
90 IOUT=5mA, TJ=25°C
80
70
60
50
40
30
20
10
10 100 1k
10k 100k
Frequency, f (Hz)
1M
Line Regulation vs. Temperature
0.015
0.014
3V≤VIN-VOUT≤40, VOUT=1.25V
IOUT=100mA, Pulse test
0.013
0.012
0.011
0.009
0.008
0.007
0.006
-25
0 25 50 75 100
Ambient Temperature, Ta (℃)
125
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R101-014,B