OMNIREL OM7611ST Datasheet
ISOLATED HERMETIC TO-257AA ADJUSTABLE
VOLTAGE REGULATORS
Three T erminal, Adjustable V oltage, 3.0 Amp
Precision Negative Regulators In Hermetic
JEDEC TO-257AA P ackage
FEATURES
• Isolated Hermetic Package, JEDEC TO-257AA Outline
• Reference Voltage Set Internally to ±2%
• Built-In Thermal Overload Protection
• Short Circuit Current Limiting
• Pin Out Identical To Plastic TO-220
• 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 3.0 amps of
output current. These units feature 2% initial voltage tolerance, with 1.0% load
regulation and .015% line regulation.
OM7611ST
ABSOLUTE MAXIMUM RATINGS @ 25°C
Input Voltage...................................................................-35V
Operating Junction Temperature Range.............................-55°C to +150°C
Storage Temperature Range .........................................-65° to +150°C
Typical Power/Thermal Characteristics:
4 11 R3
Supersedes 1 07 R2
Rated Power @ 25°C
TC........................................................................28W
TA..........................................................................3W
Thermal Resistance
q
...................................................................4.2°C/W
JC
qJA.....................................................................42°C/W
3.3 - 153
3.3
OM7611ST
ELECTRICAL CHARACTERISTICS -55°C T
+125°C (unless otherwise specified)
A
Parameter Symbol Test Conditions Min. Max. Unit
Reference Voltage V
Line Regulation ³V
(Note 1) ³V
Load Regulation ³V
(Note 1) ³I
REFVIN
OUT
IN
OUT
OUT
Thermal Regulation - 30 ms pulse, T
Ripple Rejection ³V
(Note 2) ³V
Adjust Pin Current I
Adjust Pin Current Change ³I
Minimum Load Current I
Current Limit I
Temperature Stability ³V
IN
REF
Adj
Adj
Min
Lim
OUT
(Note 2) ³T
Long Term Stability ³V
OUT
(Note 2) ³T
- V
Œ= 5 V, I
OUT
3 V V
3 V VIN- V
V
OUT
10 mA I
10 mA I
V
Œ= -10 V, f = 120 Hz, C
OUT
Œ= -10 V, f = 120 Hz, C
V
OUT
V
DIFF
10 mA I
3 V V
VIN- V
V
VIN- V
V
= 5 mA, TA= 25° C -1.238 -1.262
OUT
- V
Œ 35 V • -1.215 -1.285
IN
OUT
Π35 V
OUT
• 0.04
Œ 5 V, TA= 25° C 50
OUT IMAX.
V
Π5.0 V 1.0
OUT
OUT IMAX.
= 25° C 0.02 %/W
A
= 0
Adj
= 10 µF
Adj
• 75
• 1.5
56
• 53
70
• 60
= 35 V, IL= 10 mA • 100 µA
I
OUT
MAX.
- V
Œ 35 V • 5.0
IN
OUT
Œ 35 V • 5.0
OUT
- V
Œ 10 V • 3.0
IN
OUT
Π10 V
OUT
- V
Œ= 35 V
IN
OUT
• 2.0
3.0 6.0
• 3.0
0.5 2.5
• 0.5
-55° C TJ +125° C • 1.5 %
TA= +125° C, t = 1000 hrs 1.0 %
0.015
V
%/V
mV
%
dB
dB
µA
mA
A
A
3.3
Notes:
1. Line and Load Regulation are measured at a constant junction temperature using a low duty cycle pulse technique.
Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 30 W.
Power dissipation is determined by the input/output differential voltage and the output curren
t. Guaranteed maximum
power dissipation will not be available over the full input/output voltage range.
2. Guaranteed by design, characterization or correlation to other tested parameters.
3. The • denotes the specifications which apply over the full operating temperature range.
3.3 - 154
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