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ISOLATED HERMETIC TO-257AA FIXED
VOLTAGE REGULATORS
OM7800IH Series
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
Thermal Resistance
TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W
TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
qJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
qJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
4 11 R4
Supersedes 1 07 R3
3.3 - 217
3.3
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OM7800IH Series
ELECTRICAL CHARACTERISTICS 5 Volt VIN = 10V, Io = 500mA, -55°C TA 125°C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min. Max. Unit
Output Voltage
Line Regulation
(Note 1)
VOUT
VRLINE
TA = 25°C
VIN = 7.5V to 20V
VIN = 7.5V to 20V
4.92
• 4.85
5.08
5.15
V
V
5 mV
• 12 mV
VIN = 8.0V to 12V
•
4 mV
10 mV
Load Regulation
(Note 1)
VRLOAD
IO = 5mA to 1.5 Amp
•
12 mV
25 mV
IO = 250mA to 750 mA
•
6 mV
15 mV
Standby Current Drain
ISCD
6 mA
• 6.5 mA
Standby Current Drain
Change With Line
DISCD
(Line)
VIN = 7.5V to 20V
•
0.8 mA
Standby Current Drain
Change With Load
DISCD
(Load)
IO = 5mA to 1000mA
•
0.5 mA
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
VDO
IO (pk)
IDS
TA = 25°C, DVOUT = 100mV, IO = 1.0A
TA = 25°C
VIN = 35V
•
1.5
2.5
3.3
1.2
2.8
V
A
A
A
Ripple Rejection
Output Noise Voltage
(Note 3)
DVIN
DVOUT
NO
f =120 Hz, DVIN = 10V
(Note 3)
TA = 25°C, f =10 Hz to 100KHz
66
• 60
dB
dB
40 µV/V
RMS
Long Term Stability
(Note 3)
DVOUT
Dt
TA = 25°C, t = 1000 hrs.
75 mV
3.3
ELECTRICAL CHARACTERISTICS 12 Volt VIN = 19V, Io = 500mA, -55°C TA 125°C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min. Max. Unit
Output Voltage
Line Regulation
(Note 1)
VOUT
VRLINE
TA = 25°C
VIN = 14.5V to 27V
VIN = 14.5V to 27V
11.88
• 11.64
•
12.12
12.36
18
50
V
V
mV
mV
VIN = 16V to 22V
•
9 mV
30 mV
Load Regulation
(Note 1)
VRLOAD
IO = 5mA to 1.5 Amp
•
32 mV
60 mV
IO = 250mA to 750 mA
•
20 mV
40 mV
Standby Current Drain
ISCD
6.0 mA
• 6.5 mA
Standby Current Drain
DISCD
VIN = 15V to 30V
•
0.8 mA
Change With Line
(Line)
Standby Current Drain
DISCD
IO = 5mA to 1000mA
•
0.5 mA
Change With Load
(Load)
Dropout Voltage
VDO
DVOUT = 100mV, IO = 1.0A
•
2.5 V
Peak Output Current
IO (pk)
TA = 25°C
1.5 3.3
A
Short Circuit Current
(Note 2)
IDS
VIN = 35V
•
1.2 A
2.8 A
Ripple Rejection
Output Noise Voltage
(Note 3)
DVIN
DVOUT
NO
f =120 Hz, DVIN = 10V
(Note 3)
TA = 25°C, f =10 Hz to 100KHz
61
• 54
dB
dB
40 µV/V
RMS
Long Term Stability
(Note 3)
DVOUT
Dt
TA = 25°C, t = 1000 hrs.
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 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.
3.3 - 218
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