OM7900IH Series OM7900SR Series
ISOLATED HERMETIC TO-257AA FIXED VOLTAGE NEGATIVE REGULATORS
Three Terminal, Fixed Voltage, 1.5 Amp Precision Negative Regulators In Hermetic JEDEC TO-257AA Package and D2 Pac
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 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 TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance θJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
Notes: Product also available in Non-Isolated construction. To order this version, delete “I” from part number. Non-Isolated Example: Isolated OM79XXIH OM79XXH Use letter “A” after part number to designate ±1% output voltage tolerance. Example: OM7905AIH
0 03 R5 Supersedes 4 11 R4
3.3
3.3 - 1
OM7900IH OM7900SR
ELECTRICAL CHARACTERISTICS -5 Volt
Parameter Output Voltage Symbol VOUT VRLINE VIN = -10V, Io = 500mA, -55°C ≤ TA ≤ 125°C (unless otherwise specified) Min. -4.95 Max. -5.05 -5.15 12 Unit V V mV mV mV mV mV mV mV mV mA mA mA Test Conditions TA = 25°C VIN = -7.5V to -20V Line Regulation (Note 1) VIN = -8.0V to -12V VIN = -7.5V to -20V
• • •
-4.85
25 5 12 20
Load Regulation (Note 1)
VRLOAD
IO = 5mA to 1.5 Amp
•
IO = 250mA to 750 mA
25 15
•
Standby Current Drain ISCD ∆ISCD (Line) ∆ISCD (Load) VDO IO (pk) IDS ∆VIN ∆VOUT Output Noise Voltage (Note 3) Long Term Stability (Note 3) ∆VOUT ∆t TA = 25°C, t = 1000 hrs. NO ∆VOUT = 100mV, IO = 1.0A TA = 25°C VIN = -35V IO = 5mA to 1000mA VIN = -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 (Note 2) Ripple Rejection
• • • •
1.5
3.0 0.4
0.4
mA
2.5 3.3 1.2
V A A A dB dB
•
f =120 Hz, ∆VIN = -10V (Note 3) TA = 25°C, f =10 Hz to 100KHz 63
2.8
•
60 40
µV/V RMS
75
mV
ELECTRICAL CHARACTERISTICS -12 Volt
Parameter Output Voltage Symbol VOUT VRLINE
VIN = -19V, Io = 500mA, -55°C ≤ TA ≤ 125°C (unless otherwise specified) Min. -11.88 Max. -12.12 -12.36 20 Unit V V mV mV mV mV mV mV mV mV mA mA mA
Test Conditions TA = 25°C VIN = -14.5V to -27V
• •
-11.64
Line Regulation (Note 1)
VIN = -14.5V to -27V VIN = -16V to -22V
50 10
•
Load Regulation (Note 1) IO = 250mA to 750 mA VRLOAD IO = 5mA to 1.5 Amp
30 32
• •
60 16 30 3.5
Standby Current Drain
ISCD ∆ISCD (Line) ∆ISCD (Load) VDO IO (pk) IDS ∆VIN ∆VOUT NO ∆VOUT ∆t ∆VOUT = 100mV, IO = 1.0A TA = 25°C, IO = 5mA to 1A VIN = -35V IO = 5mA to 1000mA VIN = -14.5V to -27V
Standby Current Drain Change With Line Standby Current Drain Change With Load Dropout Voltage Peak Output Current Short Circuit Current
• • • •
1.5
4.0 0.8
0.5
mA
1.8 3.3 1.2
V A A A dB dB
3.3
(Note 2) Ripple Rejection f =120 Hz, ∆VIN = -10V (Note 3) TA = 25°C, f =10 Hz to 100KHz TA = 25°C, t = 1000 hrs.
•
56
2.8
•
53 40
Output Noise Voltage (Note 3) Long Term Stability (Note 3)
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 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 - 2
OM7900IH Series OM7900SR Series
ELECTRICAL CHARACTERISTICS -15 Volt
Parameter Output Voltage Symbol VOUT VRLINE VIN = -23V, Io = 500mA, -55°C ≤ TA ≤ 125°C (unless otherwise specified) Min. -14.85 Max. -15.15 -15.45 25 Unit V V mV mV mV mV mV mV mV mV mA mA mA Test Conditions TA = 25°C VIN = -17.5V to -30V Line Regulation (Note 1) VIN = -20V to -26V VIN = -17.5V to -30V
• • •
-14.55
50 15 25 35
Load Regulation (Note 1)
VRLOAD
IO = 5mA to 1.5 Amp
•
IO = 250mA to 750 mA
75 21
•
Standby Current Drain ISCD ∆ISCD (Line) ∆ISCD (Load) VDO IO (pk) IDS ∆VIN ∆VOUT Output Noise Voltage (Note 3) Long Term Stability (Note 3) ∆VOUT ∆t TA = 25°C, t = 1000 hrs. NO ∆VOUT = 100mV, IO = 1.0A TA = 25°C VIN = -35V IO = 5mA to 1000mA VIN = -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, ∆VIN = -10V (Note 3) TA = 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 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.
TYPICAL PERFORMANCE CHARACTERISTICS
PEAK OUTPUT CURRENT
3.5 3 2.5 1.5 2
Tj = 25°C IOUT = 500mA Tj = -55°C
DROPOUT VOLTAGE
2.5 100
RIPPLE REJECTION
2
IOUT = 1A
80
VOUT = 5V
60
1.5 1
Tj = 150°C
1
IOUT = 0A
40
VIN - V = 8VDC +3.5Vrms IOUT = 1A Tj = 25°C
0.5
∆VOUT = 100MV
0.5
∆VOUT = 100mV
20
3.3
10k 100k
0 0 5 10
0 -75 -50 -25
0
25
50 75 100 125 150
0 10 100 1k
Input To Output Differential (V)
Junction Temperature (°C)
Frequency (Hz)
3.3 - 3
OM7900IH Series OM7900SR Series
TYPICAL APPLICATIONS
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, (2.2µF on the input, 1µF on the output) should be ceramic or solid tantalum which have good high frequency characteristics. If aluminum electrolytics are used, their values should be 10µF or larger. The bypass capacitors should be mounted with the shortest leads, and if possible, directly across the regulator terminals.
Fixed Output Regulator
2 OM79XX 1 + 3
Basic Current Regulator
VIN
VOUT
VIN
2
OM79XX 1
3
2.2µF
1µF +
2.2µF
IQ
R1 IOUT
VOUT + IQ IOUT = R1
MECHANICAL OUTLINE
.420 .410 .200 .190 .045 .035 .665 .645 .537 .527 .430 .410 .038 MAX.
PIN CONNECTION
Tab
.150 .140
3.3
.750 .500 .005
OM79XXIH Isolated Front View Pin 1: Ground Pin 2: Input Pin 3: Output Tab: Isolated 1 23
OM79XXH Non-Isolated Front View Pin 1: Ground Pin 2: Input Pin 3: Output Tab Input
.035 .025
.100 TYP.
.120 TYP.
Note: • Case is metal/hermetically sealed • Isolated Tab • Outline similar to JEDEC TO-220 outline
OM7900IH Series OM7900SR Series
MECHANICAL OUTLINE
SOLDERING FOOTPRINT
12
3
Pin 1: Pin 2: Pin 3: Case
Ground Input Output N/C
TYPICAL SOLDERING PROFILE
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 soldering 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 solder used was 62/36/2 Tin Lead Silver with a melting point between 177-189ºC. 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 typically run 30 degrees cooler than the solder joints.
TYPICAL HEATING PROFILE
PART NUMBER DESIGNATOR
OM 7900 S R M
Omnirel
Device Type
Isolated Package
Package Style
Hi-Rel Screening Level
205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246
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