OM7900EA Series
ISOLATED HERMETIC TO-254AA FIXED VOLTAGE
REGULATORS WITH INTERNAL CAPACITOR COMPENSATION
Three Terminal, Fixed Voltage, -1.5 Amp
Internally Compensated, Precision Negative
Regulators In Hermetic TO-254AA Package
FEATURES
•
•
•
•
•
•
Isolated Hermetic Package, TO-254
Output Voltages: -5V, -12V, -15V
Output Voltages Set Internally To 1%
Built-In Thermal Overload Protection
Internally Compensated
Product Is Available Screened To OM803
DESCRIPTION
These three (3) terminal negative regulators are supplied in a hermetically sealed TO-254
metal package. All protective features are designed into the circuit, including thermal
shutdown, current limiting and safe-area control. These unitsare internally compensated,
thus improving stability and transient response of the regulator. External capacitors are not
required in most applications. These units are highly desirable for use in a high density
design where space is a major consideration. Standard voltages are -5V, -12V, and -15V.
These units are trimmed to 1% of nominal voltage.
SCHEMATIC
INPUT
2
2.2µF
50V
OM79XX
OUTPUT
3
1.5µF
35V
MECHANICAL OUTLINE
.144 DIA.
.545
.535
.050
.040
3.3
+
+
1
.685
.665
.800
.790
.550
.530
1
2
3
Omnirel
Part Number
OM7905EA
OM7912EA
OM7915EA
Output
Voltage
-5 V
-12 V
-15 V
.045
.035
.550
.510
.005
.150 TYP.
.150 TYP.
.260
.249
Pin 1: Ground
Pin 2: Input
Pin 3: Output
4 11 R1
Supersedes 2 07 R0
3.3 - 223
OM7900EA Series
ABSOLUTE MAXIMUM RATINGS
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15W
T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance
q
JC
(Case U) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
q
JC
(Case T). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
aa
q
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
* Derated to 30V above 85°C due to derating of the imput capacitor.
OM7905EA ELECTRICAL CHARACTERISTICS: -5 Volt
V
IN
= -10V, I
o
= 500mA, -55°C T
A
125°C (unless otherwise specified)
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
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
Min.
-4.95
Max.
-5.05
-5.15
12
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
•
•
•
-4.85
25
5
12
20
Load Regulation
(Note 1)
V
RLOAD
I
O
= 5mA to 1.5A
•
I
O
= 250mA to 750mA
25
15
•
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
DV
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= -35V
I
O
= 5mA to 1000mA
V
IN
= -7.0V to -20V
30
2.5
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
•
•
•
•
1.5
3.0
0.4
0.4
mA
2.5
3.3
1.2
V
A
A
A
dB
dB
3.3
(Note 2)
Ripple Rejection
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
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 guaranteed from -55 °C to +85°C. Above +85°C, V
IN
= -30V.
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 - 224
OM7900EA Series
OM7912EA ELECTRICAL CHARACTERISTICS: -12 Volt
V
IN
= -19V, I
o
= 500mA, -55°C T
A
125°C (unless otherwise specified)
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
Test Conditions
T
A
= 25°C
V
IN
= -14.5V to -27V
Line Regulation
(Note 1)
V
IN
= -16V to -22V
V
IN
= -14.5V to -27V
Min.
-11.88
Max.
-12.12
-12.36
20
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
•
•
•
-11.64
50
10
30
32
Load Regulation
(Note 1)
V
RLOAD
I
O
= 5mA to 1.5A
•
I
O
= 250mA to 750mA
60
16
•
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
DV
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C, I
O
= 5mA to 1A
V
IN
= -35V
I
O
= 5mA to 1000mA
V
IN
= -14.5V to -27V
30
3.5
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
•
•
•
1.5
4.0
0.8
0.5
mA
1.8
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
56
2.8
•
53
40
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 guaranteed from -55 °C to +85°C. Above +85°C, V
IN
= -30V.
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
3.3 - 225
OM7900EA Series
OM7915EA ELECTRICAL CHARACTERISTICS: -15 Volt
V
IN
= -23V, I
o
= 500mA, -55°C T
A
125°C (unless otherwise specified)
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
Test Conditions
T
A
= 25°C
V
IN
= -17.5V to -30V
Line Regulation
(Note 1)
V
IN
= -20V to -26V
V
IN
= -17.5V to -30V
Min.
-14.85
Max.
-15.15
-15.45
25
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
•
•
•
-14.55
50
15
25
35
Load Regulation
(Note 1)
V
RLOAD
I
O
= 5mA to 1.5A
•
I
O
= 250mA to 750mA
75
21
•
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
DV
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= -35V
I
O
= 5mA to 1000mA
V
IN
= -17.5V to -30V
45
6.0
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
•
•
•
1.5
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
53
2.8
•
50
40
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 guaranteed from -55 °C to +85°C. Above +85°C, V
IN
= -30V.
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
3.3
3.5
3
PEAK OUTPUT
2.5
T
j
= -55°C
DROPOUT VOLTAGE
100
I
OUT
= 1A
RIPPLE REJECTION
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
Output Current (A)
Output Current (A)
60
1
40
V
IN
- V = 8V
DC
+3.5V
rms
I
OUT
= 1A
T
j
= 25°C
1
0.5
DV
OUT
= 100mV
0.5
DV
OUT
= 100MV
20
0
-75 -50 -25
0
0
5
10
15
20
25
30
35
0
25 50 75 100 125 150
0
10
100
1k
10k
100k
Input To Output Differential (V)
Junction Temperature (°C)
Frequency (Hz)
205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246
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