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參數(shù)資料
| 型號： | LM317M |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 500 mA Adjustable Output, Positive Voltage Regulator(3端可調(diào)正向穩(wěn)壓器) |
| 中文描述： | 500毫安可調(diào)輸出，正電壓穩(wěn)壓器（三端可調(diào)正向穩(wěn)壓器） |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 158K |
| 代理商： | LM317M |
LM317M
http://onsemi.com
2
MAXIMUM RATINGS
(T
A
= 25
°
C, unless otherwise noted.)
Rating
Symbol
Value
Unit
InputOutput Voltage Differential
V
I
V
O
40
Vdc
Power Dissipation (Package Limitation) (Note 1)
Plastic Package, T Suffix, Case 221A
T
A
= 25
°
C
Thermal Resistance, JunctiontoAir
Thermal Resistance, JunctiontoCase
Plastic Package, DT Suffix, Case 369C
T
A
= 25
°
C
Thermal Resistance, JunctiontoAir
Thermal Resistance, JunctiontoCase
Plastic Package, ST Suffix, Case 318E
T
A
= 25
°
C
Thermal Resistance, JunctiontoAir
Thermal Resistance, JunctiontoCase
P
D
JA
JC
P
D
JA
JC
P
D
JA
JC
T
J
T
stg
Internally Limited
70
5.0
Internally Limited
92
5.0
Internally Limited
245
15
°
C/W
°
C/W
°
C/W
°
C/W
°
C/W
°
C/W
Operating Junction Temperature Range
40 to +125
°
C
°
C
Storage Temperature Range
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Figure 25 provides thermal resistance versus PC board pad size.
65 to +150
ELECTRICAL CHARACTERISTICS
(V
I
V
O
= 5.0 V; I
O
= 0.1 A, T
J
= T
low
to T
high
(Note 2), unless otherwise noted.)
Characteristics
Figure
Symbol
LM317M / LM317MB
Min
Typ
Unit
Max
Line Regulation (Note 3) (T
A
= 25
°
C, 3.0 V
≤
V
I
V
O
≤
40 V)
Load Regulation (Note 3)
T
A
= 25
°
C, 10 mA
≤
I
O
≤
0.5 A
V
O
≤
5.0 V
V
O
≥
5.0 V
Adjustment Pin Current
3
Reg
line
Reg
load
0.01
0.04
%/V
4
5.0
0.1
25
0.5
mV
% V
O
5
I
Adj
I
Adj
50
100
A
Adjustment Pin Current Change
2.5 V
≤
V
I
V
O
≤
40 V, 10 mA
≤
I
L
≤
0.5 A, P
D
≤
P
max
Reference Voltage
3.0 V
≤
V
I
V
O
≤
40 V, 10 mA
≤
I
L
≤
0.5 A, P
D
≤
P
max
Line Regulation (Note 3)
3.0 V
≤
V
I
V
O
≤
40 V
Load Regulation (Note 3)
10 mA
≤
I
O
≤
0.5 A
V
O
≤
5.0 V
V
O
≥
5.0 V
Temperature Stability (T
low
≤
T
J
≤
T
high
)
Minimum Load Current to Maintain Regulation (V
I
V
O
= 40 V)
Maximum Output Current
V
I
V
O
≤
15 V, P
D
≤
P
max
V
I
V
O
= 40 V, P
D
≤
P
max
, T
A
= 25
°
C
RMS Noise, % of V
O
(T
A
= 25
°
C, 10 Hz
≤
f
≤
10 kHz)
Ripple Rejection, V
O
= 10 V, f = 120 Hz (Note 4)
Without C
Adj
C
Adj
= 10 F
LongTerm Stability, T
J
= T
high
(Note 5)
T
A
= 25
°
C for Endpoint Measurements
2. T
to T
= 0
°
to +125
°
C for LM317M
3. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
4. C
Adj
, when used, is connected between the adjustment pin and ground.
5. Since LongTerm Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average
stability from lottolot.
3, 4
0.2
5.0
A
5
V
ref
1.200
1.250
1.300
V
3
Reg
line
0.02
0.07
%/V
4
Reg
load
20
0.3
70
1.5
mV
% V
O
5
T
S
I
Lmin
I
max
0.7
% V
O
mA
5
3.5
10
5
0.5
0.15
0.9
0.25
A
N
0.003
% V
O
dB
6
RR
66
65
80
5
S
0.3
1.0
%/1.0
kHrs.
T
to T
= 40
°
to +125
°
C for LM317MB.
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