KA317AHV中文资料
?2002 Fairchild Semiconductor Corporation
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Rev. 1.0.1
Features
?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
Description
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 1.2to 57V . It employs internal current limiting, thermal shut down and safe area compensation.
TO-220
1. Adj
2. Output
3. Input
1Output
23
KA317AHV
3-Terminal Positive Adjustable Regulator
KA317AHV
2
Absolute Maximum Ratings
Electrical Characteristics
(V I -V O =5V, I O = 0.5A, 0°C ≤ T J ≤ +125°C, I MAX = 1.5A, P DMAX =20W, unless otherwise specified)Note :
1. Load and line regulation are specified at constant junction temperature. Change in V D due to heating effects must be taken
into account separately. Pulse testing with low duty is used. (P MAX = 20W)2. C ADJ , when used, is connected between the adjustment pin and ground.
Parameter
Symbol Value Unit Input-Output Voltage Differential V I - V O 60V Lead Temperature T LEAD 230°C Power Dissipation
P D Internally limited
W Operating Junction Temperature Range T j 0 ~ +125°C Storage Temperature Range
T STG -65 ~+125°C Temperature Coefficient of Output Voltage
?Vo/?T
±0.02
%/°C
Parameter
Symbol Conditions
Min.Typ.Max.Unit Line Regulation (Note1)
Rline
T A = +25°C
3V ≤ V I - V O ≤ 60V -0.010.04%/V 3V ≤ V I - V O ≤ 60V
-0.020.07%/V Load Regulation (Note1)Rload
T A = +25°C, 10mA ≤I O ≤ I MAX V O < 5V V O ≥ 5V
-180.4250.5mV %/V O 10mA ≤ I O ≤ I MAX V O < 5V V O ≥ 5V
-400.8701.5mV %/V O Adjustable Pin Current I ADJ --46100μA Adjustable Pin Current Change
?I ADJ
3V ≤ V I - V O ≤ 60V 10mA ≤ I O ≤ I MAX P D ≤ P MAX
-
2.0
5
μA
Reference Voltage V REF 3V ≤ V IN - V O ≤ 60V 10mA ≤ I O ≤ I MAX P D ≤ P MAX
1.20 1.25 1.30V Temperature Stability
ST T --0.7-%/V O Minimum Load Current to Maintain Regulation
I L(MIN)V I - V O = 60V
- 3.512mA Maximum Output Current I O(MAX)V I - V O ≤ 15V, P D ≤ P MAX V I - V O ≤ 60V, P D ≤ P MAX T A =25°C
1.0
2.20.3
-
A RMS Noise, % of V OUT e N T A = +25°C, 10Hz ≤ f ≤ 10kHz -0.0030.01%/V O Ripple Rejection
RR V O = 10V, f = 120Hz without C ADJ
C ADJ = 10μF (Note2)666075-dB Long-Term Stability, T J = T HIGH ST T A = +25°C for end point measurements, 1000HR
-0.31%Thermal Resistance Junction to Case
R θJC
--
5
-
°C/W
KA317AHV
3
Typical Performance Characteristics
Figure 1.Load Regulation Figure 3.Dropout Voltage Figure 2.Adjustment Current
Figure 4.Reference Voltage
TEMPERATURE (°C)
O U T P U T V O L T A G E D E V I A T I O N (%)
TEMPERATURE (°C)
I N P U T -O U T P U T D I F F E R E N T I A L (V )
TEMPERATURE (°C)
A D J U S T M E N T C U R R E N T (u A )
TEMPERATURE (°C)
R E F E R E N C E V O L T A G E (V )
KA317AHV
Typical Application
Figure 5.Programmable Regulator
C i is required when regulator is located an appreciable distance from power supply filter.
C o is not needed for stability, however, it does improve transient response.
Since I ADJ is controlled to less than 100μA, the error associated with this term is negligible in most applications. 4
KA317AHV Mechanical Dimensions
Package
Dimensions in millimeters
TO-220
5
KA317AHV
7/2/02 0.0m 001Stock#DSxxxxxxxx
2002 Fairchild Semiconductor Corporation
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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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
Ordering Information
Product Number Package Operating Temperature
KA317AHV
TO-220
0°C to +125°C