OMNIREL OM7900SR, OM7900IH Datasheet
3.3 - 1
3.3
Three T erminal, Fixed V oltage, 1.5 Amp
Precision Negative Regulators In Hermetic
JEDEC TO-257AA Package and D
2
Pac
0 03 R5
Supersedes 4 11 R4
ISOLATED HERMETIC TO-257AA FIXED
VOLTAGE NEGATIVE REGULATORS
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 Ov erload Protection
• Short Circuit Current Limiting
• Product Is Available Screened To MIL-STD-883
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 ±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 V oltage ................................................................. -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................................................. 3W
Thermal Resistance
θ
JC
............................................4.2°C/W
θ
JA
............................................ 42°C/W
OM7900IH Series
OM7900SR Series
Notes: Product also available in Non-Isolated construction. To order this version,
delete “I” from part number.
Example: Isolated
Non-Isolated
OM79XXIH OM79XXH
Use letter “A” after part number to designate ±1% output voltage tolerance.
Example: OM7905AIH
3.3 - 2
3.3
OM7900IH
OM7900SR
ELECTRICAL CHARACTERISTICS -5 V olt V
IN
= -10V, Io= 500mA, -55°C ≤ TA≤ 125°C (unless otherwise specified)
Parameter Symbol Test Conditions Min. Max. Unit
Output Voltage V
OUT
TA= 25°C -4.95 -5.05 V
V
IN
= -7.5V to -20V • -4.85 -5.15 V
Line Regulation V
RLINE
VIN= -7.5V to -20V 12 mV
(Note 1)
• 25 mV
V
IN
= -8.0V to -12V 5 mV
• 12 mV
Load Regulation V
RLOAD
IO = 5mA to 1.5 Amp 20 mV
(Note 1)
• 25 mV
I
O
= 250mA to 750 mA 15 mV
• 30 mV
Standby Current Drain I
SCD
2.5 mA
• 3.0 mA
Standby Current Drain ∆I
SCD
VIN= -7.0V to -20V
• 0.4 mA
Change With Line (Line)
Standby Current Drain ∆I
SCD
IO= 5mA to 1000mA • 0.4 mA
Change With Load (Load)
Dropout Voltage V
DO
∆V
OUT
= 100mV, I
O
= 1.0A • 2.5 V
Peak Output Current I
O (pk)
TA= 25°C 1.5 3.3 A
Short Circuit Current I
DS
VIN= -35V 1.2 A
(Note 2)
• 2.8 A
Ripple Rejection ∆V
IN
f =120 Hz, ∆VIN= -10V 63 dB
∆V
OUT
(Note 3) • 60 dB
Output Noise Voltage N
O
TA= 25°C, f =10 Hz to 100KHz 40 µV/V
(Note 3) RMS
Long Term Stability ∆V
OUT
TA= 25°C, t = 1000 hrs. 75 mV
(Note 3) ∆t
ELECTRICAL CHARACTERISTICS -12 Volt V
IN
= -19V, Io= 500mA, -55°C ≤ TA≤ 125°C (unless otherwise specified)
Parameter Symbol Test Conditions Min. Max. Unit
Output Voltage V
OUT
TA= 25°C -11.88 -12.12 V
V
IN
= -14.5V to -27V • -11.64 -12.36 V
Line Regulation V
RLINE
VIN= -14.5V to -27V 20 mV
(Note 1)
• 50 mV
V
IN
= -16V to -22V 10 mV
• 30 mV
Load Regulation V
RLOAD
IO = 5mA to 1.5 Amp 32 mV
(Note 1)
• 60 mV
I
O
= 250mA to 750 mA 16 mV
•
30 mV
Standby Current Drain I
SCD
3.5 mA
• 4.0 mA
Standby Current Drain ∆I
SCD
VIN= -14.5V to -27V • 0.8 mA
Change With Line (Line)
Standby Current Drain ∆I
SCD
IO= 5mA to 1000mA • 0.5 mA
Change With Load (Load)
Dropout Voltage V
DO
∆V
OUT
= 100mV, I
O
= 1.0A • 1.8 V
Peak Output Current I
O (pk)
TA= 25°C, IO= 5mA to 1A 1.5 3.3 A
Short Circuit Current I
DS
V
IN
= -35V 1.2 A
(Note 2)
• 2.8 A
Ripple Rejection ∆V
IN
f =120 Hz, ∆VIN= -10V 56 dB
∆V
OUT
(Note 3) • 53 dB
Output Noise Voltage N
O
TA= 25°C, f =10 Hz to 100KHz 40 µV/V
(Note 3) RMS
Long Term Stability ∆V
OUT
TA= 25°C, t = 1000 hrs. 120 mV
(Note 3) ∆t
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.
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