COM7805T
COM7812T
COM7815T
(COTS) COMMERCIAL OFF-THE-SHELF POSITIVE
FIXED VOLTAGE REGULATORS IN TO-257 PA C K-
Three Terminal, Fixed Voltage, 1.5 Amp
Precision Positive Regulators In Hermetic
JEDEC TO-257AA Package
FEATURES
• Isolated Hermetic Package, JEDEC TO-257AA Outline
• Output Voltages: 5V, 12V, 15V
• Output Voltages Set Internally ±2%
• Built-In Thermal Overload Protection
• Short Circuit Current Limiting
• Standard Off-The-Shelf
DESCRIPTION
These three terminal positive 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, 12 V, 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 TC.............................................. 17.5W
TA................................................. 3 W
Thermal Resistance
qJC........................................... 4.2°C/W
qJA............................................ 42°C/W
3.3
3.3 - 1
COM7800T Series
3.3
ELECTRICAL CHARACTERISTICS 5 Volt V
= 10V, Io= 500mA, -55°C TA 125°C (unless otherwise specified)
IN
Parameter Symbol Test Conditions Min. Max. Unit
Output Voltage V
Line Regulation V
(Note 1)
Load Regulation V
(Note 1)
Standby Current Drain I
Standby Current Drain DI
Change With Line (Line)
Standby Current Drain DI
Change With Load (Load)
Dropout Voltage V
Peak Output Current I
Short Circuit Current I
(Note 2)
Ripple Rejection DV
Output Noise Voltage N
(Note 3) RMS
Long Term Stability DV
(Note 3) Dt
OUT
RLINE
RLOAD
SCD
SCD
SCD
DOTA
O (pk)
DS
IN
DV
OUT
O
OUT
ELECTRICAL CHARACTERISTICS 12 Volt V
TA= 25°C 4. 9 5. 1 V
= 7.5V to 20V • 4.8 5.2 V
V
IN
VIN= 7.5V to 20V 5 m V
• 12 m V
= 8.0V to 12V 4 m V
V
IN
• 10 m V
IO = 5mA to 1.5 Amp 12 m V
• 25 m V
= 250mA to 750 mA 6 m V
I
O
• 15 m V
6mA
• 6.5 m A
V
= 7.5V to 20V • 0.8 m A
IN
IO= 5mA to 1000mA • 0.5 m A
= 25°C, DV
= 100mV, I
OUT
TA= 25°C 1. 5 3. 3 A
= 1.0A 2. 5 V
O
VIN= 35V 1.2 A
• 2.8 A
f =120 Hz, DVIN= 10V 66 dB
(Note 3) • 60 d B
TA= 25°C, f =10 Hz to 100KHz 40 µV/V
TA= 25°C, t = 1000 hrs. 75 m V
= 19V, Io= 500mA, -55°C TA 125°C (unless otherwise specified)
IN
Parameter Symbol Test Conditions Min. Max. Unit
Output Voltage V
Line Regulation V
(Note 1)
Load Regulation V
(Note 1)
Standby Current Drain I
Standby Current Drain DI
Change With Line (Line)
Standby Current Drain DI
Change With Load (Load)
Dropout Voltage V
Peak Output Current I
Short Circuit Current I
(Note 2)
Ripple Rejection DV
Output Noise Voltage N
(Note 3) RMS
Long Term Stability DV
(Note 3) Dt
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.
DV
OUT
RLINE
RLOAD
SCD
SCD
SCD
DO
O (pk)
DS
IN
OUT
O
OUT
2. Short Circuit protection is only assured up to V
3. If not tested, shall be guaranteed to the specified limits.
TA= 25°C 11.76 12.24 V
= 14.5V to 27V • 11.6 12.4 V
V
IN
VIN= 14.5V to 27V 18 m V
• 50 m V
= 16V to 22V 9 m V
V
IN
• 30 m V
IO = 5mA to 1.5 Amp 32 m V
• 60 m V
= 250mA to 750 mA 20 m V
I
O
• 40 m V
6.0 m A
• 6.5 m A
V
= 15V to 30V • 0.8 m A
IN
IO= 5mA to 1000mA • 0.5 m A
DV
= 100mV, I
OUT
= 1.0A • 2.5 V
O
TA= 25°C 1. 5 3. 3 A
VIN= 35V 1.2 A
• 2.8 A
f =120 Hz, DVIN= 10V 61 dB
(Note 3) • 54 d B
TA= 25°C, f =10 Hz to 100KHz 40 µV/V
TA= 25°C, t = 1000 hrs. 12 0 m V
= 35V.
IN
The • denotes the specifications which apply over the full operating temperature range.
3.3 - 2
COM7800T Series
ELECTRICAL CHARACTERISTICS 15 Volt V
= 23V, Io= 500mA, -55°C TA 125°C (unless otherwise specified)
IN
Parameter Symbol Test Conditions Min. Max. Unit
Output Voltage V
Line Regulation V
(Note 1)
OUT
RLINE
TA= 25°C 14.7 15.3 V
= 18.5V to 30V • 14.5 15.5 V
V
IN
VIN= 17.5V to 30V 20 m V
• 50 m V
= 20V to 26V 15 m V
V
IN
• 25 m V
Load Regulation V
RLOAD
(Note 1) I
IO = 5mA to 1.5 Amp 35 m V
= 5mA to 1.0 Amp • 75 m V
O
= 250mA to 750 mA 21 m V
I
O
• 45 m V
Standby Current Drain I
SCD
• 6.5 m A
V
Standby Current Drain DI
SCD
Change With Line (Line)
Standby Current Drain DI
SCD
Change With Load (Load)
DS
DO
TA= 25°C, DV
Dropout Voltage V
Peak Output Current I
Short Circuit Current I
O (pk)
(Note 2)
Ripple Rejection DV
Output Noise Voltage N
IN
DV
OUT
O
(Note 3) RMS
Long Term Stability DV
OUT
(Note 3) Dt
= 18.5V to 30V • 0.8 m A
IN
IO= 5mA to 1000mA • 0.5 m A
OUT
= 100mV, I
= 1.0A 2. 5 V
O
TA= 25°C 1.5 3. 3 A
VIN= 35V 1 . 2 A
• 2.8 A
f =120 Hz, DVIN= 10V 54 dB
(Note 3) • 52 dB
TA= 25°C, f =10 Hz to 100KHz 40 µV/V
TA= 25°C, t = 1000 hrs. 150 m V
6.0 m A
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. Short Circuit protection is only assured up to VIN= 35V.
3. If not tested, shall be guaranteed to the specified limits.
The • denotes the specifications which apply over the full operating temperature range.
TYPICAL PERFORMANCE CHARACTERISTICS
PEAK OUTPUT CURRENT
3.5
3
2.5
Tj= 25°C
2
1.5
Tj= 150°C
1
Output Current (A)
0.5
DV
= 100mV
OUT
0
05101520253035
Input To Output Differential (V)
Tj= -
DR OPOUT VOLTAGE
2.5
I
= 1A
2
1.5
1
0.5
DV
Input To Output Differential (V)
0
-75-50-250255075 100 125 150
OUT
I
= 0A
OUT
= 100MV
OUT
Junction Temperature (°C)
RIPPLE REJECTION
100
80
I
=
OUT
60
40
Ripple Rejection (dB)
20
V
- V = 8V
IN
10 100 1k10k 100k
Frequency (Hz)
I
T
OUT
= 25°C
j
DC
= 1A
+ 3.5 V
V
= 5V
OUT
rms
3.3
3.3 - 3
205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246
COM7800T Series
.430
.410
.200
.190
.038 MAX.
.005
.120 TYP.
.537
.527
.665
.645
.420
.410
.150
.140
.750
.500
.100 TYP.
.035
.025
.045
.035
INPUT OUTPUT
0.1µF*1µFt
OM7662SC
INPUT
OUTPUT
1µF
OM7662SC
2N6124
2N4398
1µF
R
1
R
SC
INPUT
OUTPUT
OM7605SC
I
Q
V
XX
VO = V
XX
(1 + ) + IQ R2
R2
R1
R2
R1
1µF 0.1µF
OM7662SC
INPUT OUTPUT
0.33µF 0.1µF
10K
-
+
LM741
TYPICAL APPLICATIONS
Fixed Output Regulator Circuit For Increasing Output Voltage
COM78XX
*Increasing value of output capacitor improves system transient response.
Required only if regulator is located an appreciable
distance from power supply filter.
High Output Current, Adjustable Output Regulator,
Short Circuit Protected 7 To 30 Volts
COM78XX
COM78XX
COM78XX
MECHANICAL OUTLINE PIN CONNECTION
TO-257AA
3.3
Note:
• Case is metal/hermetically sealed glass feedthroughs
• Isolated Tab
Tab
COM78XXT
Isolated
Front View
Pin 1: Input
Pin 2: Ground
Pin 3: Output
Tab: Isolated
123
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