LM317M(SOT-223) [UTC]
Regulator, 1 Output, BIPolar,;
| 型号： | LM317M(SOT-223) |
| 厂家： | 
Unisonic Technologies |
| 描述： | Regulator, 1 Output, BIPolar, |
| 文件： | 总5页 (文件大小：158K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UTC LM317M LINEAR INTEGRATED CIRCUIT
3-TERMINAL 0.5A POSITIVE
ADJUSTABLE REGULATOR
DESCRIPTION
The UTC LM317M is a 3-terminal adjustable positive
1
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.
2
3
1
TO-252
SOT-223
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
2
3
TO-220
SOT-223: 1: ADJ 2: OUTPUT 3: INPUT
TO-220, TO-252: 1: ADJ 2: OUTPUT 3: INPUT
BLOCK DIAGRAM
3
Input
+
-
Voltage
Reference
Protection
Circuitry
Rlimit
2
Output
1
Vadj
UTC UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R101-014,A
UTC LM317M LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input –Output Voltage Differential
Power Dissipation
SYMBOL
VI-Vo
RATINGS
40
Internally Limited
UNIT
V
W
PD
Thermal Resistance Junction-Air
D-PAK
℃/W
RθJA
100
Operating Junction Temperature
Range
Storage Temperature Range
℃
℃
Tj
0 ~ +125
Tstg
-65 ~ +125
ELECTRICAL CHARACTERISTICS
( VI-Vo=5V, Io=0.1A, 0℃≤TJ≤+125℃, PDMAX=7.5W, unless otherwise specified.)
PARAMETER
Line Regulation
SYMBOL
TEST CONDITIONS
Ta=+25℃, 3V≤VI-Vo≤40V
3V≤VI-Vo≤40V
Ta=+25°C, 10mA≤VI-Vo≤0.5A
Vo≤5V
MIN
TYP
0.01
0.02
MAX
0.04
0.07
UNIT
%/V
Rline
Load Regulation
5
0.1
25
0.5
mV
%/Vo
Vo≥5V
Rload
10mA≤Io≤0.5A
Vo≤5V
Vo≥5V
20
0.3
50
70
1.5
100
mV
%/Vo
μA
Adjustment Pin Current
Adjustment Pin Current
Change
IADJ
3V≤VI-Vo≤40V
μA
△IADJ
0.2
5
10mA≤Io≤0.5A, PD<PDMA
3V≤VI-Vo≤40V
Reference Voltage
VREF
STT
1.20
1.25
0.7
1.30
V
10mA≤Io≤0.5A, PD<PDMA
%/Vo
mA
Temperature Stability
Minimum Load Current to
Maintain Regulation
VI-Vo=40V
IL (MIN)
3.5
10
VI-Vo≤15V, PD<PDMAX
Maximum Output Current
0.5
0.9
Io (MAX)
eN
VI-Vo=40V
0.15
0.25
0.003
A
PD<PDMAX, Ta=+25℃
Ta=+25℃, 10Hz<f<10KHz
RMS Noise, % of VOUT
Ripple Rejection
%/Vo
Vo=10V, f=120Hz
Without CADJ
CADJ=10μF
V/μs
RR
66
65
80
0.3
TJ=+125℃, 1000Hours
Long-Term Stability
ST
1
%/1000Hrs
UTC UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R101-014,A
UTC LM317M LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION
D1
1N4002
Vo
Input
UTC LM317M
Output
1.0μF
+
120
VADJ
720
1k
TTL CONTROL
MINIMUM Vo=1.25V
PN2222A
Figure 1. 1.5V Electronic Shutdown Regulator
D1 protects the device during an input short circuit
Vo
240
Input
UTC LM317M
Output
1N4001
50K
VADJ
R2
PN2907A
+
1.0μF
Figure 2. Slow Turn-On Regulator
Io
Vo
R1
R2
UTC
Input
Output
LM317M
VADJ
IADJ
1.25V
R1
IOMAX=( VREF)+IADJ=
R1
1.25V
R1+R2
VREF
IOMIN=(
)+IADJ=
R1+R2
5mA<Io<500mA
Figure 3. Current Regulator
UTC UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R101-014,A
UTC LM317M LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Minimum Load Current
Peak Output Current vs. Input-Output Differential
Voltage
40
35
30
25
20
15
30
Tj=25℃
Tj=25℃
25
20
15
10
10
0.5
0.0
0.5
0.0
0
5
30
35
40
125
125
0
5
30
35
40
10
15
20
25
10
15
20
25
Input-output Differential Voltage, Vin-Vo (V)
Input-output Differential Voltage, Vin-Vo (V)
Ripple Rejection vs. Frequency
Adjustment Pin Current vs.Temperature
100
90
80
70
60
50
40
30
20
10
55
50
45
40
Vin-Vo=5V,
Io=5mA
Vin=19V, Vo=10V
Io=5mA, Tj=25℃
Vo=1.25V
Vo=36V
35
30
-25
0
10
100
1M
25
50
75
100
1k
Frequency, f (Hz)
Line Regulation vs. Temperature
10k
100k
Ambient Temperature, Ta (℃)
Load Regulation vs. Temperature
1.0
0.015
0.014
0.013
0.012
3V≦Vin-Vo≦40, Vo=1.25V
Io=100mA, Pulse test
Vin-Vo=5V, Vo=1.25V
10mA≦Io≦500mA, Pulse test
0.9
0.8
0.7
0.6
0.5
0.4
0.011
0.009
0.008
0.007
0.006
0.3
0.2
0
25
75
25
50
75
125
50
100
0
100
-25
-25
Ambient Temperature, Ta (℃)
Ambient Temperature, Ta (℃)
UTC UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R101-014,A
UTC LM317M LINEAR INTEGRATED CIRCUIT
Outputvoltage vs.Temperature
Thermal Shutdown
5.10
5.09
5.08
5.07
5.06
5.04
5.03
5.02
5.01
5.00
1.50
1.25
1.00
0.75
Vo=5V, Io=5mA
Vin=5V,Vo=1.25V
,Io=0mA
Vin-Vo=40V
Vin-Vo=3V
25
Ambient Temperature, Ta (℃)
50
75
125
0
20
50
Ambient Temperature, Ta (℃)
75
100
150
175
-25
0
100
125
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.
UTC UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R101-014,A
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