OM7800IH Series
ISOLATED HERMETIC TO-257AA FIXED
VOLTAGE REGULATORS
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 (Other Voltages Available)
Output Voltages Set Internally To ±1% or ±2%
Built-In Thermal Overload Protection
Short Ciruit Current Limiting
Product Is Available Screened To OM803
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 ±1% or ±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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance
q
JC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
q
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
Notes:
Product also available in Non-Isolated construction. To order this version,
delete “I” from part number.
Example:
Isolated
Non-Isolated
OM78XXIH
OM78XXH
Use letter “A” after part number to designate ±1% output voltage tolerance.
Example:
OM7805AIH
3.3
4 11 R4
Supersedes 1 07 R3
3.3 - 217
OM7800IH Series
ELECTRICAL CHARACTERISTICS 5 Volt
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
V
IN
= 10V, I
o
= 500mA, -55°C T
A
125°C (unless otherwise specified)
Min.
4.92
Max.
5.08
5.15
5
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
Line Regulation
(Note 1)
V
IN
= 8.0V to 12V
V
IN
= 7.5V to 20V
•
•
•
4.85
12
4
10
12
Load Regulation
(Note 1)
V
RLOAD
I
O
= 5mA to 1.5 Amp
•
I
O
= 250mA to 750 mA
25
6
•
Standby Current Drain
I
SCD
DI
SCD
(Line)
DI
SCD
(Load)
V
DO
I
O (pk)
I
DS
DV
IN
DV
OUT
Output Noise Voltage
(Note 3)
Long Term Stability
(Note 3)
DV
OUT
Dt
T
A
= 25°C, t = 1000 hrs.
N
O
T
A
= 25°C,
DV
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= 35V
1.5
I
O
= 5mA to 1000mA
V
IN
= 7.5V to 20V
15
6
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
•
•
6.5
0.8
0.5
mA
2.5
3.3
1.2
V
A
A
A
dB
dB
•
f =120 Hz,
DV
IN
= 10V
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
66
2.8
•
60
40
µV/V
RMS
75
mV
ELECTRICAL CHARACTERISTICS 12 Volt
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
V
IN
= 19V, I
o
= 500mA, -55°C T
A
125°C (unless otherwise specified)
Min.
11.88
Max.
12.12
12.36
18
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
•
•
11.64
Line Regulation
(Note 1)
V
IN
= 14.5V to 27V
V
IN
= 16V to 22V
50
9
•
Load Regulation
(Note 1)
I
O
= 250mA to 750 mA
V
RLOAD
I
O
= 5mA to 1.5 Amp
30
32
•
•
60
20
40
6.0
Standby Current Drain
I
SCD
DI
SCD
(Line)
DI
SCD
(Load)
V
DO
I
O (pk)
I
DS
DV
IN
DV
OUT
N
O
DV
OUT
Dt
DV
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= 35V
I
O
= 5mA to 1000mA
V
IN
= 15V to 30V
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
•
•
•
•
1.5
6.5
0.8
0.5
mA
2.5
3.3
1.2
V
A
A
A
dB
dB
3.3
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
f =120 Hz,
DV
IN
= 10V
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
61
2.8
•
54
40
Output Noise Voltage
(Note 3)
Long Term Stability
(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. Short Circuit protection is only assured up to V
IN
= 35V.
3. If not tested, shall be guaranteed to the specified limits.
The • denotes the specifications which apply over the full operating temperature range.
3.3 - 218
OM7800IH Series
ELECTRICAL CHARACTERISTICS 15 Volt
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
V
IN
= 23V, I
o
= 500mA, -55°C T
A
125°C (unless otherwise specified)
Min.
14.8
Max.
15.2
15.4
20
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
Test Conditions
T
A
= 25°C
V
IN
= 18.5V to 30V
•
•
14.6
Line Regulation
(Note 1)
V
IN
= 17.5V to 30V
V
IN
= 20V to 26V
50
15
•
Load Regulation
(Note 1)
V
RLOAD
I
O
= 5mA to 1.5 Amp
I
O
= 5mA to 1.0 Amp
I
O
= 250mA to 750 mA
25
35
•
•
75
21
45
6.0
Standby Current Drain
I
SCD
DI
SCD
(Line)
DI
SCD
(Load)
V
DO
I
O (pk)
I
DS
DV
IN
DV
OUT
N
O
DV
OUT
Dt
T
A
= 25°C,
DV
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= 35V
1.5
I
O
= 5mA to 1000mA
V
IN
= 18.5V to 30V
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
•
•
6.5
0.8
0.5
mA
2.5
3.3
1.2
V
A
A
A
dB
dB
•
f =120 Hz,
DV
IN
= 10V
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
54
2.8
•
52
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. Short Circuit protection is only assured up to V
IN
= 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
3.5
3
DROPOUT VOLTAGE
2.5
100
I
OUT
= 1A
RIPPLE REJECTION
T
j
= -55°C
Input To Output Differential (V)
2.5
2
1.5
T
j
= 150°C
T
j
= 25°C
1.5
I
OUT
= 0A
I
OUT
= 500mA
Ripple Rejection (dB)
2
80
V
OUT
= 5V
3.3
Output Current (A)
60
1
40
1
0.5
DV
OUT
= 100mV
0.5
DV
OUT
= 100MV
V
IN
- V = 8V
DC
+ 3.5 V
rms
I
OUT
= 1A
T
j
= 25°C
20
25 50 75 100 125 150
10
100
1k
10k
100k
0
0
5
10
15
20
25
30
35
0
-75 -50 -25
0
Input To Output Differential (V)
Junction Temperature (°C)
Frequency (Hz)
3.3 - 219
OM7800IH Series
TYPICAL APPLICATIONS
Fixed Output Regulator
Circuit For Increasing Output Voltage
INPUT
OM78XX
OM7662SC
OUTPUT
INPUT
OM7605SC
V
XX
R1
0.1µF
OM78XX
OUTPUT
1µFt
0.1µF*
1µF
IQ
R2
*Increasing value of output capacitor improves
system transient response.
t
Required only if regulator is located an appreciable
distance from power supply filter.
V
O
= V
XX
(1+
R1
) + I
Q
R2
R2
High Output Current,
Short Circuit Protected
INPUT
R1
Adjustable Output Regulator,
7 To 30 Volts
R
SC
2N6124
2N4398
INPUT
OUTPUT
0.33µF
1µF
OM7662SC
OM78XX
-
LM741
OUTPUT
OM7662SC
OM78XX
1µF
0.1µF
10K
+
MECHANICAL OUTLINE
.420
.410
.200
.190
.045
.035
.665
.645
.537
.527
.430
.410
.038 MAX.
PIN CONNECTION
Tab
3.3
.150
.140
.750
.500
.005
OM78XXIH
Isolated
Front View
Pin 1: Input
Pin 2: Ground
Pin 3: Output
Tab: Isolated
1 2 3
OM78XXH
Non-Isolated
Front View
Pin 1: Input
Pin 2: Ground
Pin 3: Output
Tab: Ground
.035
.025
.100 TYP.
.120 TYP.
Note:
• Case is metal/hermetically sealed
• Isolated Tab
205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246
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