C O M 117T
(COTS) COMMERCIAL OFF-THE-SHELF 1.5 AMP POSITIVE
ADJUSTABLE VOLTAGE REGULATOR IN TO-257 PA C K A G E
Three Terminal, Precision Adjustable
Positive Voltage Regulator In TO-257 Package
FEATURES
• Built In Thermal Overload Protection
• Short Circuit Current Limiting
DESCRIPTION
These three terminal positive regulators are supplied in hermetically sealed packages.
All protective features are designed into the circuit, including thermal shutdown,
current-limiting, and safe-area control. With heat sinking, these devices can deliver up
to 1.5 amps of output current. The unit also features output voltages that can be fixed
from 1.2 volts to 37 volts using external resistors.
ABSOLUTE MAXIMUM RATINGS
T
c
@
25°C
Power Dissipation
TO27 .............. ..... ....... ...........................
-5.
.
.
. 20 W
Input - Output Voltage Diffrnil.................................... 4
eeta
0
V Operating Junction Te p r t r R n e . . . . . . . . . . . . . . . . . . . . . - 5 ° t + 1 0 C
meaue ag
5C o 5°
Storage Te p r t r R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 6 ° t +
meaue ag
5C o
150°C
Lead Te p r t r ( o d r n 1 s c n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
meaue Sleig 0 eod)
.
30CTemlRssac,Jnto t Cs: ....... ......................
0° hra eitne ucin o ae.
.
......°/
42CW
Mxmm Otu Cret . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
aiu upt urn:
.1.5 A
Recommended Operating Conditions:
Output Vo t g R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . t 3 V C
lae ag
12 o 7 D
Ambient Operating Temperature Range (T
A
) . . . . . . . . . . . . . - 5 ° t + 1 5 C
.
.
5C o 2°
Input Vo t g R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 t 4 . 5 V C
lae ag
.5 o 12 D
3.3
33 - 1
.
C O M 117T
ELECTRICAL CHARACTERISTICS
Parameter
Reference Voltage
Symbol
V
REF
-55°C
T
A
125°C, I
L
= 8mA (unless otherwise specified)
Min.
1.20
Max.
1.30
1.30
1.30
9
23
15
15
15
15
16
mV
mV
mV
V
Unit
Test Conditions
V
DIFF
= 3 0 , T
A
= 25°C
.V
V
DIFF
= 3.3V
V
DIFF
= 40V
•
•
•
•
•
1.20
1.20
-
9
-3
2
-5
1
-5
1
-5
1
-5
1
-6
1
Line Regulation
(Note 1)
Load Regulation
(Note 1)
R
LINE
3.0V
V
DIFF
3.3V
40V, V
out
= V
rf
,T
A
= 25°C
e
V
DIFF
40V, V
out
= V
rf
e
I
L
1.5A, T
A
= 25°C
I
L
1.5A
R
LOAD
V
DIFF
= 3.0V, 10mA
V
DIFF
= 3.3V, 10mA
V
DIFF
= 40V, 10mA
I
L
300mA, T
A
= 25°C
I
L
195mA
V
DIFF
= 40V, 10mA
Thermal Regulation
V
RTH
V
i
= 1 . V I
L
= 1.5A
46,
n
P
d
= 20 Watts, t = 20 ms, T
A
=25°C
Ripple Rejection
(Note 2)
Adjustment Pin Current
R
N
f = 120 Hz, V
out
= V
rf
e
C
Adj
= 10 µF
•
66
dB
I
dj
A
V
DIFF
= 3 0 , T
A
= 25°C
.V
V
DIFF
= 3.3V
V
DIFF
= 40V
100
•
•
-
5
1.5A
100
100
5
5
5
5
5
5
50
.
µA
Adjustment Pin
Current Change
I
Adj
³
V
DIFF
= 3.0V, 10mA
I
L
1.5A, T
A
= 25°C
I
L
V
DIFF
= 3.3V, 10mA
V
DIFF
= 40V, 10mA
I
L
300mA, T
A
= 25°C
I
L
195mA
V
DIFF
= 40V, 10mA
3.0V
V
DIFF
3.3V
Miminum Load Current
I
Lmin
•
•
•
•
•
•
•
-
5
-
5
-
5
-
5
-
5
µA
40V, T
A
= 25°C
V
DIFF
40V
V
DIFF
= 3.0V, V
O U T
= 1.4V (forced)
V
DIFF
= 3.3V, V
O U T
= 1.4V (forced)
V
DIFF
= 40V, V
O U T
= 1.4V (forced)
50
.
50
.
15
.
0.18
35
.
15
.
mA
CretLmt
urn ii
(Note 2)
I
CL
V
DIFF
= 15V
V
DIFF
= 40V, T
A
= 25°C
A
3.3
Notes:
1 Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used.
.
Changes in output voltage due to heating effects must be taken into account separately.
2 I nttse,salb gaate t teseiidlmt.
. f o etd hl e urned o h pcfe iis
3 The
•
denotes the specifications which apply over the full operating temperature range.
.
MECHANICAL OUTLINE
TO-257AA
.420
.410
.200
.190
.045
.035
.665
.645
.537
.527
.430
.410
.038 MAX.
PIN CONNECTION
.150
.140
Front View
Pn1
i : Adjust
Pn2
i : Output
Pn3
i : Input
Tab:
Isolated
.750
.500
.005
1 2 3
.035
.025
.100 TYP.
.120 TYP.
205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246
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