OM2940STM
0.5 VOLT LOW DROPOUT POSITIVE FIXED VOLTAGE REGULATOR APPROVED TO DESC DRAWING
Three Terminal, Fixed Voltage, 1 Amp
Low Dropout Voltage Regulator In
Hermetic JEDEC TO-257AA Package
FEATURES
•Similar To Industry Standard LM2940
•Approved To DESC Standardized Military Drawing
•Dropout Voltage Typically 0.5 V @ IO = 1 A
•Output Current in Excess of 1 A
•Reverse Battery Protection
•Internal Short Circuit Protection
•Isolated Hermetic Package
DESCRIPTION
These three terminal fixed voltage regulators are designed to provide 1.0A with high efficiency. It has the ability to source 1A of output current with a typical dropout voltage of .5V and a maximum of 1V over the entire temperature range. It is supplied in the hermetic TO-257 package and is ideally suited for Military applications where small size and high reliability is required.
ABSOLUTE MAXIMUM RATINGS
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Vdc Output Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V, +12V, +15Vdc Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 125°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Thermal Resistance: 3.3
qJC (Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W qJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 A
PART NUMBER DESIGNATOR
Standard Military Drawing Number |
Omnirel Part Number |
5962-8958710MUX |
OM2940-5STM |
5962-9088401MUX |
OM2940-12STM |
5962-9088501MUX |
OM2940-15STM |
4 11 R1 |
3.3 - 97 |
Supersedes 3 02 R0 |
3.3
ELECTRICAL CHARACTERISTICS, P/N OM2940-5 (5 Volt)
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Test Conditions are -55°C TA |
125°C, VIN = 10 V, IO = 1 A, COUT = 22 µF (unless otherwise specified). |
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Parameter |
Symbol |
Test Conditions |
Notes |
Min. |
Max. |
Unit |
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Output Voltage |
VOUT |
VIN = 10 V, IOUT = 5 mA |
1 |
4.85 |
5.15 |
V |
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2 |
4.75 |
5.25 |
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VIN = 6 V, IOUT = 5 mA |
1 |
4.85 |
5.15 |
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2 |
4.75 |
5.25 |
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VIN = 7 V, IOUT = 5 mA |
1 |
4.85 |
5.15 |
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2 |
4.75 |
5.25 |
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VIN = 26 V, IOUT = 5 mA |
1 |
4.85 |
5.15 |
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2 |
4.75 |
5.25 |
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VIN = 10 V, IOUT = 1 A |
1 |
4.85 |
5.15 |
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2 |
4.75 |
5.25 |
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VIN = 6 V, IOUT = 1 A |
1 |
4.85 |
5.15 |
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2 |
4.75 |
5.25 |
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VIN = 6 V, IOUT = 50 mA |
1 |
4.85 |
5.15 |
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2 |
4.75 |
5.25 |
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VIN = 10 V, IOUT = 50 mA |
1 |
4.85 |
5.15 |
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2 |
4.75 |
5.25 |
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Maximum Line Transient |
VLT |
VO 6 V, RO = 100 , t = 20 ms |
1, 2 |
40 |
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V |
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Reverse Polarity |
VRIN |
RO = 100 |
1, 2 |
-15 |
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Input Voltage DC |
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V |
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Reverse Polarity |
VRIT |
RO = 100 , t =20 ms |
1, 2 |
-45 |
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3 |
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Input Voltage Transient |
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V |
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3. |
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Quiescent Current |
IQ |
VIN = 10 V, IOUT = 5 mA |
1 |
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15 |
mA |
- |
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2 |
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20 |
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VIN = 7 V, IOUT = 5 mA |
1 |
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15 |
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2 |
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20 |
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VIN = 26 V, IOUT = 5 mA |
1 |
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15 |
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2 |
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20 |
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VIN = 10 V, IOUT = 1 A |
1 |
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50 |
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2 |
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100 |
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Line Regulation |
VRLN |
7 V VIN 26 V, |
1 |
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±40 |
mV |
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IOUT = 5 mA |
2 |
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±50 |
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Load Regulation |
VRLD |
VIN = 10 V, 50 mA IOUT 1 A |
1 |
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±50 |
mV |
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2 |
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±100 |
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Dropout Voltage |
VDO |
IOUT = 1 A |
1 |
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.7 |
V |
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2 |
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1 |
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IOUT = 100 mA |
1 |
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150 |
mV |
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2 |
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200 |
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Output Noise Voltage |
VON |
VIN = 10 V, IO = 5 mA, |
1, 2 |
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700 |
µV rms |
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10 Hz - 100 Hz |
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Output Impedance |
RO |
VIN = 10 V, IOUT = 100 mA dc |
1, 2 |
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1 |
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and 20 mA ac, fO = 120 Hz |
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Short Circuit Current |
IOS |
VIN = 10 V |
1 |
1.5 |
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A |
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2 |
1.3 |
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Ripple Rejection |
RR |
VIN = 10 V + 1 V rms, |
1 |
60 |
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dB |
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IOUT = 5 mA, f = 1 kHz |
2 |
50 |
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Notes: 1. TA = 25°C.
2. Over full operating temperature range.
ELECTRICAL CHARACTERISTICS, P/N OM2940-12 (12 Volt)
Test Conditions are -55°C TA |
125°C, VIN = 17 V, IO = 1 A, COUT = 22 µF (unless otherwise specified). |
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Parameter |
Symbol |
Test Conditions |
Notes |
Min. |
Max. |
Unit |
Output Voltage |
VOUT |
VIN = 17 V, IOUT = 5 mA |
1 |
11.64 |
12.36 |
V |
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2 |
11.40 |
12.60 |
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VIN = 13.6 V, IOUT = 5 mA |
1 |
11.64 |
12.36 |
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2 |
11.40 |
12.60 |
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VIN = 14 V, IOUT = 5 mA |
1 |
11.64 |
12.36 |
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2 |
11.40 |
12.60 |
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VIN = 26 V, IOUT = 5 mA |
1 |
11.64 |
12.36 |
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2 |
11.40 |
12.60 |
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VIN = 17 V, IOUT = 1 A |
1 |
11.64 |
12.36 |
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2 |
11.40 |
12.60 |
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VIN = 13.6 V, IOUT = 1 A |
1 |
11.64 |
12.36 |
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2 |
11.40 |
12.60 |
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VIN = 13.6 V, IOUT = 50 mA |
1 |
11.64 |
12.36 |
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2 |
11.40 |
12.60 |
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VIN = 17 V, IOUT = 50 mA |
1 |
11.64 |
12.36 |
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2 |
11.40 |
12.60 |
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Maximum Line Transient |
VLT |
VO 13 V, RO = 100 , t = 20 ms |
1, 2 |
40 |
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V |
Reverse Polarity |
VRIN |
RO = 100 |
1, 2 |
-15 |
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Input Voltage DC |
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V |
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Reverse Polarity |
VRIT |
RO = 100 , t =20 ms |
1, 2 |
-45 |
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Input Voltage Transient |
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V |
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Quiescent Current |
IQ |
VIN = 17 V, IOUT = 5 mA |
1 |
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15 |
mA |
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2 |
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20 |
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VIN = 14 V, IOUT = 5 mA |
1 |
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15 |
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2 |
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20 |
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VIN = 26 V, IOUT = 5 mA |
1 |
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15 |
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2 |
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20 |
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VIN = 17 V, IOUT = 1 A |
1 |
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50 |
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2 |
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60 |
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Line Regulation |
VRLN |
14 V VIN 26 V, |
1 |
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±75 |
mV |
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IOUT = 5 mA |
2 |
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±120 |
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Load Regulation |
VRLD |
VIN = 17 V, 50 mA IOUT 1 A |
1 |
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±120 |
mV |
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2 |
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±190 |
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Dropout Voltage |
VDO |
IOUT = 1 A |
1 |
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.7 |
V |
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2 |
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1 |
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IOUT = 100 mA |
1 |
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150 |
mV |
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2 |
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200 |
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Output Noise Voltage |
VON |
VIN = 17 V, IO = 5 mA, |
1 |
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1000 |
µV rms |
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10 Hz - 100 Hz |
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Output Impedance |
RO |
VIN = 17 V, IOUT = 100 mA dc |
1, 2 |
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1 |
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and 20 mA ac, fO = 120 Hz |
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Short Circuit Current |
IOS |
VIN = 17 V |
1 |
1.6 |
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A |
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2 |
1.3 |
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Ripple Rejection |
RR |
VIN = 17 V + 1 V rms, |
1 |
52 |
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dB |
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IOUT = 5 mA, f = 1 kHz |
2 |
46 |
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Notes: 1. TA = 25°C.
2. Over full operating temperature range.
OM2940STM