KA317AHV [FAIRCHILD]
3-Terminal Positive Adjustable Regulator; 三端可调正稳压器
| 型号： | KA317AHV |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | 3-Terminal Positive Adjustable Regulator |
| 文件： | 总6页 (文件大小：51K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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KA317AHV
3-Terminal Positive Adjustable Regulator
Features
Description
• Output Current in Excess of 1.5A
• Output Adjustable Between 1.2V and 57V
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe Area Compensation
• TO-220 Package
This monolithic integrated circuit is an adjustable 3-terminal
positive voltage regulator designed to supply more than 1.5A
of load current with an output voltage adjustable over a 1.2
to 57V. It employs internal current limiting, thermal shut
down and safe area compensation.
TO-220
Output
1
2
3
1. Adj 2. Output 3. Input
Internal Block Diagram
Input 3
+
-
Protection
Circuitry
Voltage
Reference
Rlimit
2
Output
1
Vadj
Rev. 1.0.1
©2002 Fairchild Semiconductor Corporation
KA317AHV
Absolute Maximum Ratings
Parameter
Symbol
Value
60
Unit
V
Input-Output Voltage Differential
Lead Temperature
V - V
I
O
T
230
°C
LEAD
Power Dissipation
P
Internally limited
0 ~ +125
-65 ~+125
±0.02
W
D
Operating Junction Temperature Range
Storage Temperature Range
Temperature Coefficient of Output Voltage
T
°C
j
T
STG
°C
∆Vo/∆T
%/°C
Electrical Characteristics
(V -V =5V, I = 0.5A, 0°C ≤ T ≤ +125°C, I
= 1.5A, P =20W, unless otherwise specified)
DMAX
I
O
O
J
MAX
Parameter
Symbol
Conditions
T = +25°C
Min. Typ. Max.
Unit
A
-
-
0.01 0.04
0.02 0.07
%/V
3V ≤ V - V ≤ 60V
I
O
Line Regulation (Note1)
Rline
3V ≤ V - V ≤ 60V
%/V
mV
I
O
T = +25°C, 10mA ≤I ≤ I
A MAX
O
V < 5V
O
-
18
25
%/V
O
V
≥ 5V
0.4
0.5
O
Load Regulation (Note1)
Adjustable Pin Current
Rload
10mA ≤ I ≤ I
V
V
mV
%/V
O
MAX
-
< 5V
≥ 5V
-
-
-
40
0.8
70
1.5
O
O
O
I
46
100
5
µA
µA
ADJ
3V ≤ V - V ≤ 60V
10mA ≤ I ≤ I
MAX
I
O
Adjustable Pin Current Change
∆I
2.0
ADJ
O
P
≤ P
MAX
D
3V ≤ V - V ≤ 60V
IN
O
Reference Voltage
V
10mA ≤ I ≤ I
1.20 1.25 1.30
V
REF
O
MAX
P
≤ P
MAX
D
Temperature Stability
ST
-
-
-
0.7
3.5
-
%/V
O
T
Minimum Load Current to Maintain
Regulation
I
V - V = 60V
12
mA
L(MIN)
I
O
V - V ≤ 15V, P ≤ P
MAX
I
O
D
2.2
0.3
Maximum Output Current
I
V - V ≤ 60V, P ≤ P
1.0
-
-
A
O(MAX)
I
O
D
MAX
T =25°C
A
RMS Noise, % of V
Ripple Rejection
e
T = +25°C, 10Hz ≤ f ≤ 10kHz
A
0.003 0.01
%/V
dB
OUT
N
O
V
= 10V, f = 120Hz
O
RR
ST
without C
C
66
60
75
-
ADJ
= 10µF (Note2)
ADJ
T = +25°C for end point
A
Long-Term Stability, T = T
-
-
0.3
5
1
-
%
J
HIGH
measurements, 1000HR
Thermal Resistance Junction to Case
R
θJC
-
°C/W
Note :
1. Load and line regulation are specified at constant junction temperature. Change in V due to heating effects must be taken
D
into account separately. Pulse testing with low duty is used. (P
= 20W)
MAX
2. C , when used, is connected between the adjustment pin and ground.
ADJ
2
KA317AHV
Typical Performance Characteristics
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 1. Load Regulation
Figure 2. Adjustment Current
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 3. Dropout Voltage
Figure 4. Reference Voltage
3
KA317AHV
Typical Application
KA317HV
Vadj
VI
Vo
Output
Input
R1
Ci
0. 1 F
Co
1 F
Iadj
µ
µ
Iadj
R2
VO = 1.25V (1+ R2/ R1)+Iadj R2
Figure 5. Programmable Regulator
C is required when regulator is located an appreciable distance from power supply filter.
i
C is not needed for stability, however, it does improve transient response.
o
Since I
is controlled to less than 100µA, the error associated with this term is negligible in most applications.
ADJ
4
KA317AHV
Mechanical Dimensions
Package
Dimensions in millimeters
TO-220
4.50 ±0.20
9.90 ±0.20
(8.70)
+0.10
–0.05
1.30
ø3.60 ±0.10
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
5
KA317AHV
Ordering Information
Product Number
Package
TO-220
Operating Temperature
KA317AHV
0°C to +125°C
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.v
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 THE PRESIDENT 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, and (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 a significant injury of the
user.
2. A critical component in 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.
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2002 Fairchild Semiconductor Corporation
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