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OM2940-05SM OM2940-15SM OM2940-12SM
SURFACE MOUNT 0.5 VOLT LOW DROPOUT POSITIVE REGULATOR
Isolated Hermetic Surface Mount Package Three Terminal, Fixed Voltage, 1 Amp Low Dropout Voltage Regulator
FEATURES
* * * * * * Similar To Industry Standard LM2940 Dropout Voltage Typically 0.5V @ IO = 1A Output Current Up To 1A Reverse Battery Protection Internal Short Circuit Protection Isolated Hermetic Surface Mount 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 a hermetic surface mount package and is ideally suited for Military applications where small size and high reliability are required.
ABSOLUTE MAXIMUM RATINGS @ 25C
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Vdc Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V, +12V, +15 Vdc Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . - 55C to + 125C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to + 150C Lead Temperature (Soldering 10 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . 300C Thermal Resistance: JC (Isolated). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15C/W Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0A a
3.5
4 11 R0
3.5 - 57
ELECTRICAL CHARACTERISTICS, P/N OM2940-5SM (5 Volts) ELECTRICAL CHARACTERISTICS, P/N OM2940-12SM (12 Volts)
-55C TA 125C, VIN = 17 V, IO = 1 A, COUT = 22 F (unless otherwise specified).
Unit V VIN = 17 V, IOUT = 5 mA VIN = 13.6 V, IOUT = 5 mA VIN = 14 V, IOUT = 5 mA VIN = 26 V, IOUT = 5 mA VIN = 17 V, IOUT = 1 A VIN = 13.6 V, IOUT = 1 A VIN = 13.6 V, IOUT = 50 mA VIN = 17 V, IOUT = 50 mA V Maximum Line Transient V V mA VRIN VRIT IQ VLT VO 13 V, RO = 100 , t = 20 ms RO = 100 RO = 100 , t =20 ms VIN = 17 V, IOUT = 5 mA VIN = 14 V, IOUT = 5 mA VIN = 26 V, IOUT = 5 mA VIN = 17 V, IOUT = 1 A Line Regulation mV Load Regulation mV Dropout Voltage V mV V rms Output Noise Voltage Output Impedance 1 1.2 1.0 1 2 60 50 A dB Short Circuit Current Ripple Rejection Notes: VON RO IOS RR VRLN VRLD VDO 14 V VIN 26 V, IOUT = 5 mA VIN = 17 V, 50 mA IOUT 1 A IOUT = 1 A IOUT = 100 mA Parameter Output Voltage Symbol VOUT Test Conditions Test Conditions VIN = 10 V, IOUT = 5 mA VIN = 6 V, IOUT = 5 mA VIN = 7 V, IOUT = 5 mA VIN = 26 V, IOUT = 5 mA VIN = 10 V, IOUT = 1 A VIN = 6 V, IOUT = 1 A VIN = 6 V, IOUT = 50 mA VIN = 10 V, IOUT = 50 mA VLT VO 6 V, RO = 100 , t = 20 ms RO = 100 RO = 100 , t =20 ms VIN = 10 V, IOUT = 5 mA VIN = 7 V, IOUT = 5 mA VIN = 26 V, IOUT = 5 mA VIN = 10 V, IOUT = 1 A VRLN 7 V VIN 26 V, IOUT = 5 mA VIN = 10 V, 50 mA IOUT 1 A IOUT = 1 A IOUT = 100 mA VON RO VIN = 10 V, IOUT = 100 mA dc and 20 mA ac, fO = 120 Hz 1, 2 1 2 VIN = 10 V VIN = 10 V + 1 V rms, IOUT = 5 mA, f = 1 kHz IOS RR VIN = 10 V, IO = 5 mA, 10 Hz - 100 Hz VRLD VDO 1 2 1 2 1 2 1 2 20 30 20 30 20 30 70 120 1, 2 -45 1, 2 -15 1, 2 40 VRIN VRIT IQ Notes 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1, 2 1, 2 1, 2 1 2 1 2 1 2 1 2 40 -15 -45 20 30 20 30 20 30 70 120 Min. 11.64 11.40 11.64 11.40 11.64 11.40 11.64 11.40 11.64 11.40 11.64 11.40 11.64 11.40 11.64 11.40
-55C TA 125C, VIN = 10 V, IO = 1 A, COUT = 22 F (unless otherwise specified).
Notes 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 Min. 4.85 4.75 4.85 4.75 4.85 4.75 4.85 4.75 4.85 4.75 4.85 4.75 4.85 4.75 4.85 4.75 Max. 5.15 5.25 5.15 5.25 5.15 5.25 5.15 5.25 5.15 5.25 5.15 5.25 5.15 5.25 5.15 5.25
3.5
Unit V
OM2940-05SM - OM2940-15SM
Parameter Output Voltage
Symbol VOUT
Max. 12.36 12.60 12.36 12.60 12.36 12.60 12.36 12.60 12.36 12.60 12.36 12.60 12.36 12.60 12.36 12.60
Maximum Line Transient
V V V mA
Reverse Polarity Input Voltage DC Reverse Polarity Input Voltage Transient Quiescent Current Reverse Polarity Input Voltage DC Reverse Polarity Input Voltage Transient Quiescent Current
3.5 - 58
1 2 1 2 1 2 1 2 1, 2 55 80 65 120 .7 1 150 200 700
Line Regulation
mV mV V mV 1 1000 V rms
Load Regulation
Dropout Voltage
1 2 1 2 1 2 1 2
110 180 160 220 .7 1 150 200
Output Noise Voltage
Output Impedance
VIN = 17 V, IO = 5 mA, 10 Hz - 100 Hz VIN = 17 V, IOUT = 100 mA dc and 20 mA ac, fO = 120 Hz VIN = 17 V VIN = 17 V + 1 V rms, IOUT = 5 mA, f = 1 kHz 1. TA = 25C. 2. Over full operating temperature range.
1, 2 1 2 1 2 1.2 1.0 52 46
1
A dB
Short Circuit Current
Ripple Rejection
Notes:
1. TA = 25C. 2. Over full operating temperature range.
ELECTRICAL CHARACTERISTICS, P/N OM2940-15SM (15 Volts)
Symbol VOUT VIN = 20 V, IOUT = 5 mA VIN = 16.75 V, IOUT = 5 mA VIN = 17 V, IOUT = 5 mA VIN = 26 V, IOUT = 5 mA VIN = 20 V, IOUT = 1 A VIN = 16.75 V, IOUT = 1 A VIN = 16.75 V, IOUT = 50 mA VIN = 20 V, IOUT = 50 mA VLT VO 16 V, RO = 100 , t = 20 ms RO = 100 V V mA RO = 100 , t =20 ms VIN = 20 V, IOUT = 5 mA VIN = 17 V, IOUT = 5 mA VIN = 26 V, IOUT = 5 mA VIN = 20 V, IOUT = 1 A VRLN 17 V VIN 26 V, IOUT = 5 mA VIN = 20 V, 50 mA IOUT 1 A IOUT = 1 A IOUT = 100 mA VON 1 RO IOS VIN = 20 V VIN = 20 V + 1 V rms, IOUT = 5 mA, f = 1 kHz RR VRLD VDO mV 1, 2 -45 1, 2 -15 1, 2 40 V VRIN VRIT IQ V Test Conditions Unit
-55C TA 125C, VIN = 20 V, IO = 1 A, COUT = 22 F (unless otherwise specified).
Parameter Output Voltage
PIN CONNECTION
Notes 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2
Min. 14.55 14.25 14.55 14.25 14.55 14.25 14.55 14.25 14.55 14.25 14.55 14.25 14.55 14.25 14.55 14.25
Max. 15.45 15.75 15.45 15.75 15.45 15.75 15.45 15.75 15.45 15.75 15.45 15.75 15.45 15.75 15.45 15.75
Pin 1, 15 thru 28: IN Pin 2, 3, 13, and 14: GND Pin 4 thru 12: OUT
Maximum Line Transient
Reverse Polarity Input Voltage DC Reverse Polarity Input Voltage Transient Quiescent Current
3.5 - 59
.450 SQ.
1 2 1 2 1 2 1 2 20 30 20 30 20 30 70 120 mV V mV 1000 V rms 1 2 1 2 1 2 1 2 125 350 200 400 .7 1 150 200 VIN = 20 V, IO = 5 mA, 10 Hz - 100 Hz VIN = 20 V, IOUT = 100 mA ac and 20 mA dc, fO = 120 Hz 1, 2 1 2 1 2 1.2 1.0 48 42 1 A dB
MECHANICAL OUTLINE
.090 MAX. .02 x 45 .035 4 PIN 1 PIN 28 1 26 TOP .05 X 45 MAX. 3 PLCS. SIDE
.300 4 PLCS. .050 24 PLCS. 12 .305 SQ. 18 .009 R. BOTTOM 28 PLCS.
Line Regulation
Load Regulation
Dropout Voltage
Output Noise Voltage
Output Impedance
Short Circuit Current
Ripple Rejection
OM2940-05SM - OM2940-15SM
Notes:
1. TA = 25C. 2. Over full operating temperature range.
3.5
OM2940-05SM - OM2940-15SM
TYPICAL APPLICATIONS
Dropout Voltage
0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -40 Inout - Output Differential (V)
Dropout Voltage vs Temperature
5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 -40 Dropout Voltage (V) Output Voltage (5V)
Output Voltage vs Temperature
TJ = 25C
1A
500 mA 100 mA 80 120 0 40 Temperature (C) 160
200 400 600 800 1000 Output Current (mA)
80 120 0 40 Temperature (C)
160
Quiescent Current vs Temperature
50 Quiescent Current (mA) Quiescent Current (mA) 40 30 20 10 10 mA 0 -40 0 40 80 120 Temperature (C) 160 VIN = VOUT +5V 200 180 160 140 120 100 80 60 40 20 0
Quiescent Current
50 Quiescent Current (mA) 40 30 20 10 0 0
Quiescent Current
1A 500 mA
100 mA 500 mA 1A
VIN = 14V VOUT = 5V TJ = 25C
0
5
10 15 20 25 30 35 Input Voltage (V)
0.2 0.4 0.6 0.8 Load Current (A)
1.0
Line Transient Response
Output Voltage Deviation (mV) 30 20 10 0 -10 -20 -30 3V 0V -10 0 Output Voltage Deviation (V) 0.5 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 1.0 0.5 0 -10
Load Transient Response
95 Ripple Rejection (dB) 85 75 65 55 45 35 0 10 20 Time (s) 30 40 1
Ripple Rejection
3.5
Input Voltage Change (V)
10 20 30 40 50 60 Time (s)
Load Current Change (A)
VIN = 10V, COUT = 22F TJ = 25C, VOUT =5V
VIN = 10V COUT = 22F IOUT = 10mA VOUT =5V
10 100 1k 10k 100k 1M Frequency (Hz)

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