©2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.2
Features
• Output Current in Excess of 0.5A
• Output Adjustable Between 1.2V and 37V
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Outp ut Transistor Safe Area Compensation
• Floating Operation fo r High Voltage Applications
Description
The KA317M is a 3-Terminal adjustable positive voltage
regulator capable of supplying in excess of 500mA over an
output voltage range of 1.2V to 37V. This voltage regulator
is exceptionally easy to use and requires only two external
resistors to set the output voltage.
D-PAK
1. Adj 2. Output 3. Input
1
2
3
TO-220
123
Internal Block Diagram
Rlimit
3Vin
Vo
1
Voltage
Reference
Vad
j
2
Protection
Circuitry
+
-
Input
Output
KA317M
3-Term inal 0.5A Positive Adjustable Regulator
KA317M
2
Absolute Maximum Ratings
Electrical Characteristics
(VI-VO=5V, IO= 0.1A, 0°C ≤ TJ ≤ + 125°C, PDMAX = 7.5W, unless otherwise specified)
Note :
1. Thermal resistance test board
Size: 76.2 mm * 114.3mm * 1.6mm(1S0P)
JED E C standar d: JESD51-3, JESD51-7
2. Assume no ambient airflow.
3. Load and Line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty cycle is used.
4. CADJ, when used, is connected between the adjustment pin and ground.
Parameter Symbol Value Unit
Input Output Voltage Differential VI - VO40 V
Power Dissipation PDInternally limited W
Thermal Resistance Junction-Air
D-PAK (Note1,2) RθJA 100 °C/W
Operating Junction Temperature Range Tj0 ~ +125 °C
Storage Temperature Range TSTG -65 ~+125 °C
Parameter Symbol Conditions Min. Typ. Max. Unit
Line Regulation (Note3) Rline TA = +25°C, 3V ≤ VI −VO ≤ 40V - 0.01 0.04 %/ V
3V ≤ VI −VO ≤ 40V - 0.02 0.07
Load Regulation (Note3) Rload
TA =+ 25°C, 10mA ≤ IO ≤ 0.5A
VO ≤ 5V
VO ≥ 5V -5
0.1 25
0.5 mV
%/ VO
10mA ≤ IO ≤ 0.5A
VO ≤ 5V
VO ≥ 5V -20
0.3 70
1.5 mV
%/ VO
Adjustment Pin Current IADJ -- 50 100 uA
Adjustment Pin Current
Change ∆IADJ 3V ≤ VI - VO ≤ 40V
10mA ≤ IO ≤ 0.5A, PD < PDMAX -0.25 uA
Reference Voltage VREF 3V < VI - VO < 40V
10mA ≤ IO ≤ 0.5A, PD < PDMAX 1.20 1.25 1.30 V
Temperature Stability STT-- 0.7 - %/ VO
Minimum Load Current to
Maintain Regulation IL(MIN) VI - VO = 40V - 3.5 10 mA
Maximum Output Current IO(MAX) VI - VO ≤15V, PD < PDMAX 0.5 0.9 - A
VI - VO = 40V
PD < PDMAX, TA =+ 25°C0.15 0.25 -
RMS Noise, % of VOUT eNTA = +25°C, 10Hz < f < 10KHz - 0.003 - %/ VO
Ripple Rejection RR VO = 10V, f = 120Hz
without CADJ
CADJ = 10uF (Note4) 66 65
80 -dB
Long-Term Stability ST TJ =+ 125°C, 1000Hours - 0.3 1 %/1000Hrs
KA317M
3
Typical Perfo rma n ce Cha ra cte ristic s
Figu re 1. Minimu m Lo ad Cu rrent Figu re 2. Pea k Ou tpu t Cu rrent vs. Inpu t-O u tput
Differential Voltage
Figure 3. Adjustment Pin Current vs. Temperature Figure 4. Ripple Rejection vs. Frequency
Figure 5. Load Re gulation v s. Te mperat ure Figure 6. Line Regulation vs. Temperature
KA317M
4
Typical Perfo rmance Characteristics (Continued)
Figu re 7. Ou tp utvoltag e vs. Temperature Figure 8. Thermal Shutdown
KA317M
5
Typical Application
Figure 1. 15V Electro nic Shutd own Regulator
D1 protects the device during an input short circuit.
Figu re 2. Slow Tu rn-On Regula to r
Figure 3. Current Regulator
Input Output
Input Output
Input
Output
KA317M
6
Mechanical Dimensions
Package Dimensions in millimeters
4.50 ±0.20
9.90 ±0.20
1.52 ±0.10
0.80 ±0.10 2.40 ±0.20
10.00 ±0.20
1.27 ±0.10
ø3.60 ±0.10
(8.70)
2.80 ±0.1015.90 ±0.20
10.08 ±0.30 18.95MAX.
(1.70)
(3.70)(3.00)
(1.46)
(1.00)
(45°)
9.20 ±0.2013.08 ±0.20
1.30 ±0.10
1.30 +0.10
–0.05
0.50 +0.10
–0.05
2.54TYP
[2.54 ±0.20]2.54TYP
[2.54 ±0.20]
TO-220
KA317M
7
Mechanical Dimensions (Continued)
Package Dimensions in millimeters
6.60
±0.20
2.30
±0.10
0.50
±0.10
5.34
±0.30
0.70
±0.20
0.60
±0.20
0.80
±0.20
9.50
±0.30
6.10
±0.20
2.70
±0.20
9.50
±0.30
6.10
±0.20
2.70
±0.20
MIN0.55
0.76
±0.10
0.50
±0.10
1.02
±0.20
2.30
±0.20
6.60
±0.20
0.76
±0.10
(5.34)
(1.50)
(2XR0.25)
(5.04)
0.89
±0.10
(0.10) (3.05)
(1.00)
(0.90)
(0.70)
0.91
±0.10
2.30TYP
[2.30±0.20]
2.30TYP
[2.30±0.20]
MAX0.96
(4.34)(0.50) (0.50)
D-PAK
KA317M
3/14/02 0.0m 001
Stock#DSxxxxxxxx
2002 Fairchild Semicond uctor Corporation
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FAIRCHILD’S PRODUCTS AR E NOT AUTHORIZED FOR USE AS C RITICAL COMPONENTS I N LIFE S UPPORT DEVICE S
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORA TION. As used he rein :
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 syst em who se failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effec tiv ene ss.
www.fairchildsemi.com
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRO DUCTS HEREIN TO IMPROVE RELIABILITY, FUN C TION OR DESIGN . FAIRCHILD DO ES NOT ASSUME ANY
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DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIG HTS, NOR THE RIGHTS OF OTHERS.
Ordering Information
Product Number Package Operating Temperature
KA317M TO-220 0 ~ 125 °C
KA317MR D-PAK
Product Folder - Fairchild P/N KA317M - Adjustable Voltage Regulator (Positive)
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Contents
General description | Features | Product
status/pricing/packaging
General description
The KA317M is a 3-terminal adjustable
positive voltage regulator capable of supplying
in excess of 500mA over an output voltage
range of 1.2V to 37V. This voltage regulator is
exceptionally easy to use and requires only two
external resistors to set the Output voltage.
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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
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Datasheet
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datasheet
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mail]
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Product status/pricing/packaging
Product Product status Package type Leads Packing method
KA317MRTF Full Production TO-252(DPAK) 2 TAPE REEL
KA317MRTM Full Production TO-252(DPAK) 2 TAPE REEL
KA317MTU Full Production TO-220 3 RAIL
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