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Электронный компонент: OM7915SR

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3.3 - 1
3.3
Three Terminal, Fixed Voltage, 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 Overload 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 pack-
age. 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
@ 25C
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to + 150C
Typical Power/Thermal Characteristics:
Rated Power @ 25 C
T
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W
T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance
JC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2C/W
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/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 Volt
V
IN
= -10V, I
o
= 500mA, -55C
T
A
125C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Output Voltage
V
OUT
T
A
= 25C
-4.95
-5.05
V
V
IN
= -7.5V to -20V
-4.85
-5.15
V
Line Regulation
V
RLINE
V
IN
= -7.5V to -20V
12
mV
(Note 1)
25
mV
V
IN
= -8.0V to -12V
5
mV
12
mV
Load Regulation
V
RLOAD
I
O
= 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
V
IN
= -7.0V to -20V
0.4
mA
Change With Line
(Line)
Standby Current Drain
I
SCD
I
O
= 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)
T
A
= 25C
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,
V
IN
= -10V
63
dB
V
OUT
(Note 3)
60
dB
Output Noise Voltage
N
O
T
A
= 25C, f =10 Hz to 100KHz
40
V/V
(Note 3)
RMS
Long Term Stability
V
OUT
T
A
= 25C, t = 1000 hrs.
75
mV
(Note 3)
t
ELECTRICAL CHARACTERISTICS -12 Volt
V
IN
= -19V, I
o
= 500mA, -55C
T
A
125C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Output Voltage
V
OUT
T
A
= 25C
-11.88
-12.12
V
V
IN
= -14.5V to -27V
-11.64
-12.36
V
Line Regulation
V
RLINE
V
IN
= -14.5V to -27V
20
mV
(Note 1)
50
mV
V
IN
= -16V to -22V
10
mV
30
mV
Load Regulation
V
RLOAD
I
O
= 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
V
IN
= -14.5V to -27V
0.8
mA
Change With Line
(Line)
Standby Current Drain
I
SCD
I
O
= 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)
T
A
= 25C, I
O
= 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,
V
IN
= -10V
56
dB
V
OUT
(Note 3)
53
dB
Output Noise Voltage
N
O
T
A
= 25C, f =10 Hz to 100KHz
40
V/V
(Note 3)
RMS
Long Term Stability
V
OUT
T
A
= 25C, 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.
3.3 - 3
3.3
OM7900IH Series
OM7900SR Series
ELECTRICAL CHARACTERISTICS -15 Volt
V
IN
= -23V, I
o
= 500mA, -55C
T
A
125C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Output Voltage
V
OUT
T
A
= 25C
-14.85
-15.15
V
V
IN
= -17.5V to -30V
-14.55
-15.45
V
Line Regulation
V
RLINE
V
IN
= -17.5V to -30V
25
mV
(Note 1)
50
mV
V
IN
= -20V to -26V
15
mV
25
mV
Load Regulation
V
RLOAD
I
O
= 5mA to 1.5 Amp
35
mV
(Note 1)
75
mV
I
O
= 250mA to 750 mA
21
mV
45
mV
Standby Current Drain
I
SCD
6.0
mA
6.5
mA
Standby Current Drain
I
SCD
V
IN
= -17.5V to -30V
0.8
mA
Change With Line
(Line)
Standby Current Drain
I
SCD
I
O
= 5mA to 1000mA
0.5
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)
T
A
= 25C
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,
V
IN
= -10V
53
dB
V
OUT
(Note 3)
50
dB
Output Noise Voltage
N
O
T
A
= 25C, f =10 Hz to 100KHz
40
V/V
(Note 3)
RMS
Long Term Stability
V
OUT
T
A
= 25C, t = 1000 hrs.
150
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.
3.5
3
2.5
2
1.5
1
0.5
0
0
5
10
PEAK OUTPUT CURRENT
V
OUT
= 100mV
T
j
= -55C
T
j
= 25C
T
j
= 150C
Input To Output Differential (V)
2.5
2
1.5
1
0.5
0
-75 -50 -25
0
25
50
75 100 125 150
DROPOUT VOLTAGE
V
OUT
= 100MV
I
OUT
= 0A
I
OUT
= 500mA
I
OUT
= 1A
Junction Temperature (C)
100
80
60
40
20
0
10
100
1k
10k
100k
RIPPLE REJECTION
V
OUT
= 5V
V
IN
- V = 8V
DC
+3.5V
rms
I
OUT
= 1A
T
j
= 25C
Frequency (Hz)
TYPICAL PERFORMANCE CHARACTERISTICS
3.3
OM7900IH Series
OM7900SR Series
TYPICAL APPLICATIONS
MECHANICAL OUTLINE
PIN CONNECTION
Fixed Output Regulator
Basic Current Regulator
.430
.410
.200
.190
.038 MAX.
.005
.120 TYP.
.537
.527
.665
.645
.420
.410
.150
.140
.750
.500
.100 TYP.
.035
.025
.045
.035
1 2 3
Note:
Case is metal/hermetically sealed
Isolated Tab
Outline similar to JEDEC TO-220 outline
OM79XXIH
Isolated
Front View
Pin 1: Ground
Pin 2: Input
Pin 3: Output
Tab:
Isolated
OM79XXH
Non-Isolated
Front View
Pin 1: Ground
Pin 2: Input
Pin 3: Output
Tab
Input
Tab
V
IN
V
OUT
1
F
2.2
F
1
2
3
OM79XX
+
+
V
IN
I
OUT
2
1
3
2.2
F
R1
OM79XX
I
Q
I
OUT
=
V
OUT
R1
+ I
Q
Input bypass capacitors are recommended for stable operation of the OM7900 series of regulators over
the input voltage and output current ranges. Output bypass capacitors will improve the transient response
of the regulator.
The bypass capacitors, (2.2F on the input, 1F on the output) should be ceramic or solid tantalum which
have good high frequency characteristics. If aluminum electrolytics are used, their values should be 10F
or larger. The bypass capacitors should be mounted with the shortest leads, and if possible, directly
across the regulator terminals.
OM
7900
S
R
M
Omnirel
Device
Isolated
Package
Hi-Rel Screening
Type
Package
Style
Level
PART NUMBER DESIGNATOR
Figure 1 shows a typical soldering profile for the D2 and D3 Packages when soldering a to a printed circuit board. The
profile will vary from system to system and solders to solders. Factors that can affect the profile include the type of sol-
dering system used, density and type of components on the board or substrate material being used. This profile shows
temperature versus time. The two profiles described are based on a high density and a low density board. The type sol-
der used was 62/36/2 Tin Lead Silver with a melting point between 177-189C. An convection/infrared soldering reflow
system was used. The circuit and solder joints heat up first due to their mass followed by the components which typi-
cally run 30 degrees cooler than the solder joints.
TYPICAL HEATING PROFILE
TYPICAL SOLDERING PROFILE
MECHANICAL OUTLINE
SOLDERING FOOTPRINT
Pin 1: Ground
Pin 2: Input
Pin 3: Output
Case N/C
205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246
OM7900IH Series
OM7900SR Series
1 2
3