KA317HVTU [FAIRCHILD]
暂无描述;
| 型号： | KA317HVTU |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | 暂无描述 线性稳压器IC 调节器 电源电路 输出元件 局域网 |
| 文件： | 总6页 (文件大小：70K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM317T (KA317)
Adjustable Voltage
Regulator (Positive)
3-TERMINAL POSITIVE ADJUSTABLE
REGULATOR
TO-220
This monolithic integrated circuit is an adjustable 3-terminal
positive voltage regulator designed to supply 2.2A typical
of load current with an output voltage adjustable over a 1.2
to 37V. It employs internal current limiting, thermal shut-
down and safe area compensation.
FEATURES
• Output Current 2.2A Typical
ORDERING INFORMATION
• Output Adjustable Between 1. 2V and 37V
• Internal Thermal-Overload Protection
• Internal Short-Circuit Current-Limiting
• Output Transistor Sate-Area Compensation
• TO-220 Package
Device
LM317T (KA317)
Package Operating Temperature
TO-220
0°C ~ +125°C
BLOCK DIAGRAM
Vin
3
+
-
Voltage
Reference
Production
Circuitry
Rlimit
2
Vo
1
Vadj
©2000 Fairchild Semiconductor International
Rev. B, May 2000
ABSOLUTE MAXIMUM RATINGS (T = +25°C, unless otherwise specified)
A
Characteristic
Input-Output Voltage Differential
Lead Temperature
Symbol
V - V
Value
40
Unit
V
I
O
T
230
°C
LEAD
Power Dissipation
P
Internally limited
0 ~ +125
-65 ~ +125
0.02
W
D
Operating Temperature Range
Storage Temperature Range
Temperature Coefficient of Output Voltage
T
°C
OPR
T
°C
STG
V /T
%/°C
O
ELECTRICAL CHARACTERISTICS
(V - V = 5V, I = 0.5A, 0°C ≤ T ≤ +125°C, I
= 1.5A, P
= 20W, unless otherwise specified)
MAX
I
O
O
J
MAX
Characteristic
Line Regulation
Symbol
Rline
Test Conditions
3V ≤ V - V ≤ 40V
Min
Typ
0.01
0.02
Max
0.04
0.07
Unit
%/V
%/V
T = +25°C
A
I
O
3V ≤ V - V ≤ 40V
I
O
Load Regulation
Rload
T = +25°C, 10mA ≤ I ≤ I
A
O
O
O
MAX
V
V
< 5V
≥ 5V
18
25
mV
0.4
0.5
%/V
O
10mA ≤ I ≤ I
O
MAX
V
< 5V
40
70
mV
O
V
≥ 5V
0.8
1.5
%/V
O
O
Adjustable Pin Current
I
46
100
5
µA
µA
ADJ
Adjustable Pin Current Change
∆I
3V ≤ V - V ≤ 40V
2.0
ADJ
I
O
10mA ≤ I ≤ I
O
MAX
P ≤ P
MAX
Reference Voltage
V
3V ≤ V - V
≤ 40V
MAX
1.20
1.25
1.30
12
V
REF
IN
OUT
10mA ≤ I ≤ I
O
P
≤ P
D
MAX
Temperature Stability
ST
0.7
3.5
%/V
t
O
Minimum Load Current to
Maintain Regulation
L
V - V = 40V
mA
(MIN)
I
O
Maximum Output Current
I
V - V ≤ 15V, P ≤ P
1.0
66
2.2
0.3
A
O(MAX)
I
O
D
MAX
V - V ≤ 40V, P ≤ P
, T = 25°C
I
O
D
MAX
A
RMS Noise, % of V
e
T = +25°C, 10Hz ≤ f ≤ 10KHz
0.003 0.01
%/V
O
OUT
N
A
Ripple Rejection
RR
V
= 10V, f = 120Hz
dB
O
without C
60
75
ADJ
C
= 10µF
ADJ
Long-Term Stability, T = T
ST
T = +25°C for end point
0.3
1
%
J
HIGH
A
measurements, 1000HR
Thermal Resistance Junction to
Case
R
5
°C/W
θJC
*
Load and line regulation are specified at constant junction temperature. Change in V due to heating effects must be taken into account separately. Pulse testing
D
with low duty is used. (P
= 20W)
MAX
©2000 Fairchild Semiconductor International
Rev. B, May 2000
TYPICAL PERFORMANCE CHARACTERISTICS
Fig. 1 Load Regulation
Fig. 2 Adjustment Current
0.2
55
50
I
= 0.5A
= 1.5A
0
L
-0.2
-0.4
I
L
45
40
-0.6
-0.8
-1.0
35
0
25
50
75
100
125
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
Fig. 4 Reference Voltage
Fig. 3 Dropout Voltage
3
1.26
∆V = 100mV
o
I
= 1.5A
= 1A
L
1.255
2.5
I
L
1.25
1.245
1.24
2
1.5
1
I
L
= 500mA
I
= 200mA
L
I
= 20mA
L
1.235
0
25
50
75
100
125
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
©2000 Fairchild Semiconductor International
Rev. B, May 2000
Typical Application
VI
VI
Vo
KA317
Vadj
R1
Ci
Co
0.1µF
Iadj
R2
0.1µF
adj
Vo = 1.25V (1 + R2/R1) + Iadj R2
Fig. 5 Programmable Regulator
C is required when regulator is located at an appreciable distance from the power supply filter.
i
C improves transient response by reducing AC noise which is present at the output.
o
Since I ADJ is controlled to less than 100µA, the error associated with this term is negligible in most applications.
©2000 Fairchild Semiconductor International
Rev. B, May 2000
TO-220 Package Dimensions
TO-220 (FS PKG CODE AE)
4.50 0.20
+0.10
9.90 0.20
(8.70)
1.30
ø3.60 0.10
–0.05
1.27 0.10
1.52 0.10
0.80 0.10
+0.10
–0.05
0.50
2.40 0.20
2.54TYP
2.54TYP
[2.54 0.20]
[2.54 0.20]
10.00 0.20
Dimensions in Millimeters
August 1999, Rev B
©2000 Fairchild Semiconductor International
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is
not intended to be an exhaustive list of all such trademarks.
ACEx™
HiSeC™
SuperSOT™-8
SyncFET™
TinyLogic™
UHC™
Bottomless™
CoolFET™
CROSSVOLT™
ISOPLANAR™
MICROWIRE™
POP™
2
®
E CMOS™
PowerTrench
VCX™
FACT™
QFET™
FACT Quiet Series™
FAST
FASTr™
GTO™
QS™
®
Quiet Series™
SuperSOT™-3
SuperSOT™-6
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR
CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Product Status
Definition
Advance Information
Formative or In
Design
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
Preliminary
First Production
This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
No Identification Needed
Full Production
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
Obsolete
Not In Production
This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
©2000 Fairchild Semiconductor International
Rev. E
©2020 ICPDF网 联系我们和版权申明