COM7905T
COM7912T
COM7915T
(COTS) COMMERCIAL OFF-THE-SHELF FIXED
V O LTAGE NEGATIVE REGULATORS IN TO-257
Three Terminal, Fixed Voltage, 1.5 Amp
Precision Negative Regulators In Hermetic
JEDEC TO-257AA Package
FEATURES
•
•
•
•
•
•
Isolated Hermetic Package, JEDEC TO-257AA Outline
Output Voltages: -5V, -12V, - 5
1V
Output Voltages Set Internally To ± 2%
Built-In Thermal Overload Protection
Short Circuit Current Limiting
Standard Off-The-Shelf
DESCRIPTION
These three terminal negative regulators are supplied in a hermetically sealed
metal package whose outline is similar to the industry standard TO-220 plastic
package. All protective features are designed into the circuit, including thermal
shutdown, current limiting and safe-area control. With heat sinking, they can deliver
over 1.5 amps of output current. These units feature internally trimmed output
voltages to 2% of nominal voltage. Standard voltages are -5V, -12V, and -15V.
However, other voltages are available up to -24 volts. These units are ideally suited
for Military applications where a hermetically sealed package is required.
ABSOLUTE MAXIMUM RATINGS
@
25°C
Input Voltage ................................................................. -35 V
Operating Junction Temperature Range .......................... - 55°C to + 150°C
Storage Temperature Range ..................................... - 65°C to + 150°C
Typical Power/Thermal Characteristics:
Rated Power @ 25° C T
C
.............................................. 17.5W
T
A
................................................. 3 W
Thermal Resistance
q
JC
............................................ 4.2°C/W
q
JA
............................................ 42°C/W
33
.
8 09 R0
33 - 1
.
COM7900T Series
ELECTRICAL CHARACTERISTICS
Parameter
Output Voltage
Symbol
V
O U T
V
RLINE
-5 Vo
l
t
V
IN
= - 0 , I
o
= 500mA, -55°C
1V
T
A
Min.
-.
49
125°C (unless otherwise specified)
Max.
-.
51
-.
52
12
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
Test Conditions
T
A
= 25°C
V
IN
= -7.5V to -20V
•
•
-.
48
Line Regulation
(Note 1)
V
IN
= -7.5V to -20V
V
IN
= -8.0V to -12V
25
5
•
Load Regulation
(Note 1)
I = 250mA to 750 mA
O
V
RLOAD
I = 5mA to 1.5 Amp
O
12
20
•
•
25
15
30
25
.
Standby Current Drain
I
CD
S
DI
C D
S
(ie
Ln)
DI
C D
S
(Load)
V
D O
I
(pk)
O
I
S
D
DV
IN
DV
O U T
N
O
DV
O U T
Dt
DV
O U T
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= -35V
I = 5mA to 1000mA
O
V
IN
= -7.0V to -20V
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
SotCrutCret
hr ici urn
(Note 2)
Ripple Rejection
•
•
•
•
15
.
30
.
04
.
04
.
mA
25
.
33
.
12
.
V
A
A
A
dB
dB
•
f = 2 H , DV
IN
= -10V
10 z
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
63
28
.
•
60
40
Output Noise Voltage
(Note 3)
Long Term Stability
(Note 3)
µV/V
RMS
75
mV
ELECTRICAL CHARACTERISTICS
Parameter
Output Vo t g
lae
Symbol
V
O U T
V
RLINE
-12 Vot
l
V
IN
= -19V,
o
= 500mA, -55°C
I
T
A
Min.
125°C (unless otherwise specified)
Max.
-12.24
-24
1.
20
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
Test Conditions
T
A
= 25°C
V
IN
= -14.5V to -27V
-
11.76
•
•
- .
11 6
Line Regulation
(Note 1)
V
IN
= -14.5V to -27V
V
IN
= -16V to -22V
50
10
•
Load Regulation
(Note 1)
I = 250mA to 750 mA
O
V
RLOAD
I = 5mA to 1.5 Amp
O
30
32
•
•
60
16
30
35
.
Standby Current Drain
I
CD
S
DI
C D
S
(ie
Ln)
DI
C D
S
(Load)
V
D O
I
(pk)
O
I
S
D
DV
IN
DV
O U T
N
O
DV
O U T
Dt
DV
O U T
= 100mV,
O
=
1.0A
I
T
A
= 2 ° , I
O
= 5mA to 1A
5C
V
I
= -35V
N
I = 5mA to 1000mA
O
V
IN
= -14.5V to -27V
Standby Current Drain
Change Wi h L n
t ie
Standby Current Drain
Change W i h L a
t od
Dropout Vo t g
lae
Peak Output Current
SotCrutCret
hr ici urn
•
•
•
•
15
.
40
.
08
.
05
.
mA
18
.
33
.
12
.
V
A
A
A
dB
dB
33
.
(Note 2)
Ripple Rejection
f = 2 H , DV
IN
= -10V
10 z
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
•
56
28
.
•
53
40
Output Noise Vo t g
lae
(Note 3)
Long Te m S a i i y
r tblt
(Note 3)
µV/V
RMS
120
mV
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 S o t C r u t p o e t o i o l a s r d u t V
IN
= -35V.
. hr ici rtcin s ny sue p o
3 I nttse,salb gaate t teseiidlmt.
. f o etd hl e urned o h pcfe iis
The • denotes the specifications which apply over the full operating temperature range.
33 - 2
.
COM7900T Series
ELECTRICAL CHARACTERISTICS
Parameter
Output Voltage
Symbol
V
O U T
V
RLINE
-15 Volt
V
IN
= - 3 , I
o
= 500mA, -55°C
2V
T
A
Min.
125°C (unless otherwise specified)
Max.
-53
1.
-55
1.
25
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
Test Conditions
T
A
= 25°C
V
IN
= -17.5V to -30V
-47
1.
•
•
-45
1.
Line Regulation
(Note 1)
V
IN
= -17.5V to -30V
V
IN
= -20V to -26V
50
15
•
Load Regulation
(Note 1)
I = 250mA to 750 mA
O
V
RLOAD
I = 5mA to 1.5 Amp
O
25
35
•
•
75
21
45
60
.
Standby Current Drain
I
CD
S
DI
C D
S
(ie
Ln)
DI
C D
S
(Load)
V
D O
I
(pk)
O
I
S
D
DV
IN
DV
O U T
N
O
DV
O U T
Dt
DV
O U T
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= -35V
I = 5mA to 1000mA
O
V
IN
= -17.5V to -30V
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
SotCrutCret
hr ici urn
(Note 2)
Ripple Rejection
•
•
•
•
15
.
65
.
08
.
05
.
mA
25
.
33
.
12
.
V
A
A
A
dB
dB
•
f = 0 Hz DV
IN
= -10V
12 ,
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
53
28
.
•
50
40
Output Noise Voltage
(Note 3)
Long Term Stability
(Note 3)
µV/V
RMS
150
mV
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 S o t C r u t p o e t o i o l a s r d u t V
IN
= - 5 .
. hr ici rtcin s ny sue p o
3V
3 I nttse,salb gaate t teseiidlmt.
. f o etd hl e urned o h pcfe iis
The • denotes the specifications which apply over the full operating temperature range.
TYPICAL PERFORMANCE CHARACTERISTICS
PEAK OUTPUT CURRENT
35
.
3
25
.
15
.
2
T
j
= 25°C
I
U T
= 500mA
O
T
j
= -55°C
D P U VO AG
RO O T LT E
25
.
10
0
RPL RJCIN
IPE EETO
2
I
U T
= 1A
O
8
0
V
O U T
= 5V
6
0
15
.
1
T
j
= 150°C
1
I = 0A
OUT
4
0
V
IN
- V = 8V
DC
+3.5V
rms
I = 1A
OUT
T
j
= 25°C
05
.
2
0
DV
O U T
= 100MV
05
.
DV
O U T
= 100mV
33
.
1k
0
10
0k
0
0
5
1
0
1
5
2
0
2
5
3
0
3
5
0
-5 -0 -5
7 5 2
0
2
5
5
0
7 10 15 10
5 0
2 5
0
1
0
10
0
1
k
Input To Output Differential (V)
Junction Temperature (°C)
Frequency (Hz)
33 - 3
.
COM7900T Series
TYPICAL APPLICATIONS
Input bypass capacitors are recommended for stable operation of the OM7900 series of regulators over
the input voltage and output current ranges. Output bypass capacitors will improve the transient
response of the regulator.
The bypass capacitors, (2.2µF on the input, 1µF on the output) should be ceramic or solid tantalum which
have good high frequency characteristics. If aluminum electrolytics are used, their values should be 10µF
or larger. The bypass capacitors should be mounted with the shortest leads, and if possible, directly
across the regulator terminals.
Fixed Output Regulator
V
IN
Basic Current Regulator
V
IN
3
COM79XX
1
+
2
V
OUT
3
OM79XX
1
2
2.2µF
1µF
+
2.2µF
I
Q
R1
I
OU
V
OUT
+ I
Q
I
OUT
=
R1
MECHANICAL OUTLINE
TO-257AA
.420
.410
.200
.190
.045
.035
.665
.645
.537
.527
.430
.410
.038 MAX.
PIN CONNECTION
Tab
.150
.140
33
.
.750
.500
.005
.035
.025
.100 TYP.
.120 TYP.
COM79XXT
Isolated
Front View
P n 1 Ground
i :
P n 2 Input
i :
P n 3 Output
i :
Tab: Isolated
Note:
•Case is metal/hermetically sealed
•Isolated Tab/Glass Feedthroughs
1 2 3
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