IL317

TECHNICAL DATA
THREE-TERMINAL ADJUSTABLE
OUTPUT POSITIVE VOLTAGE REGULATORS
IL317
The IL317 is adjustable 3-terminal positive
voltage regulator capable of supplying in excess of
1.5 A over an output voltage range of 1.2 V to 37 V.
These voltage regulator is exceptionally easy to use
and require only two external resistors to set the
output voltage. Further, it employ internal current
limiting, thermal shutdown and safe area
compensation, making
them essentially blow-out proof.
The IL317 serve a wide variety of applications
to make a programmable output regulator, or by
connecting a fixed resistor between the adjustment
and output, the IL317 series can be used as a
precision current requlator.
Futures
 Output Current in Excess of 1.5 Ampere
 Output Adjustable between 1.2 V and 37 V
 Internal Thermal Overload Protection
 Internal Short - Circuit Current Limiting Constant with Temperature
 Output Transistor Safe-Area Compensation
 Floating Operation for High Voltage Applications
 Standard 3-lead Transistor Packages
 Eliminates Stocking Many Fixed
ORDERING INFORMATION
Device
Operating
Temperature Range
IL317KB
IL317D0T
IL317D2T
TA = 0 to 125 C
for all packages
Package
Packing
TO-220
Tube
TO-252
Tape & Reel
TO-263
Tape & Reel
2011, February, Rev. 01
IL317
Standard application
Vin
Vout
IL317
R1
Сin*
0.1F
Adjust
R2
Сo**
1F
 = Cin is required if regulator is located an appreciable distance from power supply filter.
 = Co is not needed for stability ; however, is does improve transient response.
Vout  125
. V (1 
R2
)
 R2
R1 I ADJ
Since IADJ is controlled to less then 100 A, the error associated with this term is negligible in most
applications.
Maximum ratings
Rating
Symbol
Value
Unit
Vi - Vo
40
Vdc
Power Dissipation and Thermal Characteristics
PD
Internally Limited
Operating Junction Temperature Rang
TJ
-0 to +150
C
Tstg
-65 to +150
C
Input - Output Voltage Differential
Storage Junction Temperature Rang
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2011, February, Rev. 01
IL317
Electrical characteristics
(Vi-Vo= 5.0V, Io = 0.5 A, TJ = Tlow to Thigh (see Note 1); Imax = 1.5 A and Pmax = 20 W unless otherwise noted)
Characteristic
Line Regulation (TA=+25C)
3.0V  Vi - Vo 40 V
Load Regulation(TJ=+25C)
10mAIoImax,
Vin 5V
Vin5 V
Thermal Regulation (TA=+25C)
20 ms Pulse
Adjustment Pin Current
Adjustment Pin Current Change
2.5  Vi - Vo  40 V
10mA IL Imax, PD  Pmax
Reference Voltage (Note 4)
3.0  Vi - Vo  40 V
10mA IL Imax, PD  Pmax
Line Regulation (Note 3)
3.0 V  Vi - Vo 40 V
Load Regulation (Note 3)
10mAIoImax,
Vin 5V
Vin5 V
Temperature Stability (Tlow  Tj  Ttigh)
Minimum Load Current to
Maintain Regulation (Vi - Vo = 40 V)
Maximum Output Current
Vi - Vo 15 V , P  20 W
Vi - Vo = 40 V, P 20W, TA=+25C
RMS Nose , % of Vo
TA=+25C, 10 Hz  f  10 kHz
Ripple Rejection, Vo = 10 V, f = 120 Hz
(Note 5)
Without Cadj
Cadj = 10 F
Long-Term Stability, Tj = Thigh (Note 6)
TA=+25C for Endpoint Measurements
Thermal Resistance Junction to Case
Symbol
Regline
Min
-
Typ
0.01
Max
0.04
Unit
/V
-
-
5.0
0.1
0.03
25
0.5
0.07
mV
/Vo
/W
IAdj
IAdj
-
50
0.2
100
5.0
A
A
Vref
1.2
1.25
1.3
V
Regline
-
0.02
0.07
/V
-
20
0.3
0.7
3.5
70
1.5
10
mV
/V
1.5
0.15
-
2.2
0.4
0.003
-
Regload
Regload
Ts
ILmin
Imax
N
mA
A
RR
/Vo
dB
S
66
-
65
80
0.3
1.0
RJC
-
5.0
-
/1.0 k
Hrs.
C/W
Notes: (1) Tlow = 0 C , Thigh = +125 C
(2) Imax = 0.5 A , Pmax
(3) Load and line regulation are specified at constant junction tempereture. Changes in Vo due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
(4) Selected devices with tightened tolerance reference voltage available.
(5) Cadj , when used, connected between the adjustment pin and ground.
(6) Since Long - Term Stability cannot be measured on each device before shipment, this specification is an engineering
estimate of average stability from lot to lot.
2011, February, Rev. 01
IL317
TO-220AB PKG OUTLINE DIMENSIONS
2011, February, Rev. 01
IL317
2011, February, Rev. 01
IL317
TO-263-3L PKG OUTLINE DIMENSIONS
2011, February, Rev. 01