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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 @ 25°C
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Vdc Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V, +12V, +15 Vdc 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: θJC (Isolated). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15°C/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)
-55°C ≤ TA ≤ 125°C, VIN = 17 V, IO = 1 A, COUT = 22 µF (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 , Ω t = 20 ms RO = 100 Ω RO = 100 , Ω 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 µV rms Output Noise Voltage Output Impedance 1 1.2 1.0 1 2 60 50 Ω 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 , Ω t = 20 ms RO = 100 Ω RO = 100 , Ω 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 .