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UNISONIC TECHNOLOGIES CO., LTD LM317M
3-TERMINAL 0.5A POSITIVE ADJUSTABLE REGULATOR
1 1 2 3 TO-252
LINEAR INTEGRATED CIRCUIT
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.
SOT-223
12 3 TO-220
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
*Pb-free plating product number: LM317ML
ORDERING INFORMATION
Order Number Normal Lead Free Plating LM317M-AA3-0-R LM317ML-AA3-0-R LM317M-TA3-0-T LM317ML-TA3-0-T LM317M-TN3-0-R LM317ML-TN3-0-R LM317M-TN3-0-T LM317ML-TN3-0-T Note: Pin assignment: I:VIN O:VOUT A:ADJ
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
Package SOT-223 TO-220 TO-252 TO-252
Pin Assignment 1 2 3 A O I A O I A O I A O I
Packing Tape Reel Tube Tape Reel Tube
www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd
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LM317M
BLOCK DIAGRAM
Input
3
LINEAR INTEGRATED CIRCUIT
+ -
Voltage Reference
Protection Circuitry
Rlimit
2
Output
1
Vadj
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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ABSOLUTE MAXIMUM RATINGS
LINEAR INTEGRATED CIRCUIT
PARAMETER SYMBOL RATINGS UNIT Input-Output Voltage Differential VIN-VOUT 40 V Power Dissipation PD Internally Limited W Junction Temperature TJ +125 Operating Temperature TOPR -20 ~ +85 Storage Temperature TSTG -40 ~ +150 Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. The device is guaranteed to meet performance specification within 0~+70 operating temperature range and assured by design from -20~+85.
ELECTRICAL CHARACTERISTICS
(VIN-VOUT=5V, IOUT=0.1A, 0TJ+125, PD(MAX)=7.5W, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN Ta=+25, 3VVIN-VOUT40V Line Regulation VOUT 3VVIN-VOUT40V Ta=+25C, 10mAVIN-VOUT0.5A VOUT5V VOUT5V Load Regulation VOUT 10mAIOUT0.5A VOUT5V VOUT5V Adjustment Pin Current IADJ 3VVIN-VOUT40V Adjustment Pin Current IADJ Change 10mAIOUT0.5A, PDmV %/Vo mV %/Vo A A V %/Vo mA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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TYPICAL APPLICATION
D1 1N4002 Input UTC LM317M VADJ 720 PN2222A VoUT 120 1k
LINEAR INTEGRATED CIRCUIT
Output + 1.0F
TTL CONTROL
MIN. VoUT=1.25V
Figure 1. 1.5V Electronic Shutdown Regulator D1 protects the device during an input short circuit
Input
UTC LM317M
VoUT 240 50K
Output 1N4001
VADJ R2 PN2907A + 1.0F
Figure 2. Slow Turn-On Regulator
Input
UTC LM317M
VoUT
R1
R2
IoUT Output
VADJ IADJ 1.25V VREF )+IADJ= R1 R1 1.25V VREF IO(MIN)=( )+IADJ= R1+R2 R1+R2 5mAFigure 3. Current Regulator
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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TYPICAL CHARACTERISTICS
Minimum Load Current 40 30 TJ=25
LINEAR INTEGRATED CIRCUIT
Peak Output Current vs. Input-Output Differential Voltage TJ=25
Peak Output Current Io(peak) (A)
0 5 30 35
35
Minimum Load Current (mA)
25 20 15 10 0.5 0.0
30 25 20 15 10 0.5 0.0 10 15 20 25 40
0
5
10
15
20
25
30
35
40
Input-output Differential Voltage, VIN-VOUT (V)
Input-output Differential Voltage, VIN-VOUT (V)
Adjustment Pin Current vs.Temperature 55 VIN-VOUT=5V, IoUT=5mA 100 90 80
Ripple Rejection vs. Frequency VIN=19V, VOUT=10V IOUT=5mA, TJ=25C
Adjustment Pin Current (A)
50
VoUT=1.25V
Ripple 'Rejection (dB)
70 60
Cadj=0F
45
VoUT=36V
40
50 40 30 20
35
30 -25
0
25
50
75
100
125
10 10
100
Cadj=10F
1k
10k
100k
1M
Ambient Temperature, Ta ()
Frequency, f (Hz)
Load Regulation vs. Temperature 1.0 0. 9 VIN-VOUT=5V, Vo=1.25V 10mAIOUT500mA, Pulse test 0.015 0.014
Line Regulation vs. Temperature
3VVIN-VOUT40, VOUT=1.25V IOUT=100mA, Pulse test
0.7 0.6 0.5 0.4 0.3 0.2 -25 0 25 50 75 100 125
Line Regulation (%/V)
Load Regulation (%)
0.8
0.013 0.012 0.011 0.009 0.008 0.007 0.006 -25 0 25 50 75 100 125
Ambient Temperature, Ta ()
Ambient Temperature, Ta ()
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www.unisonic.com.tw
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TYPICAL CHARACTERISTICS(Cont.)
Outputvoltage vs.Temperature 5.10 5.09
Output Voltage, VOUT (V) Output Voltage, VOUT (V)
LINEAR INTEGRATED CIRCUIT
Thermal Shutdown 1.50 VIN=5V,VOUT=1.25V,IOUT=0mA 1.25
VOUT=5V, IOUT=5mA
5.08 5.07 5.06 5.04 5.03 5.02 5.01 5.00 -25 0
VIN-VOUT=40V
1.00
VIN-VOUT=3V
0.75
25 50 75 100 Ambient Temperature, Ta ()
125
0
20
50 100 150 75 125 Ambient Temperature, Ta ()
175
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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