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MA1150-M Datasheet(PDF) 11 Page - Panasonic Semiconductor |
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MA1150-M Datasheet(HTML) 11 Page - Panasonic Semiconductor |
11 / 11 page For Video Equipment MN3111H Usage Notes External components 1. This product requires eight Schottky barrier diodes and two Zener diodes. We recommend the following components. Schottky barrier diodes: MA723 or equivalents Zener diodes: MA1150-M, MA8150-M (for positive regulated voltage) or equivalents MA1100-M, MA8100-M (for negative regulated voltage) or equivalents Ta=25˚C Component Model number Typical characteristics Notes Schottky barrier diodes MA723 IF =200mA, VF ≤ 0.55V MA1150-M IZ=5mA, 14.6V ≤ VZ ≤ 15.35V for positive Zener diodes MA8150-M regulated voltage MA1100-M IZ=5mA, 9.75V ≤ VZ ≤ 10.25V for negative MA8100-M regulated voltage The MN3111H will not operate properly if the components do not satisfy the above specifications. 2. Always use the specified components for peripheral circuits so as to ensure that OVEE and VL do not reverse potentials when the power is turned off. As the above sketch illustrates, allowing OVEE to exceed VL1 and VL2 by more than 0.7 V produces the risk of applying a forward bias to the PN junction, turning on the parasitic transistor, and generating an overcurrent that produces latch-up. If this phenomenon arises, increase the size of capacitor C7 or decrease the size of capacitor C13 to increase the OVEE time constant. (See the sample application circuit for the locations of C7 and C13.) Normal operation GND OFF VL1/VL2 OVEE Faulty operation 0.7V or higher Reversal GND OFF VL1/VL2 OVEE |
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