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PC2905AT-E2 Datasheet(PDF) 4 Page - NEC |
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PC2905AT-E2 Datasheet(HTML) 4 Page - NEC |
4 / 16 page Data Sheet G15368EJ1V0DS 4 µµµµPC29M33A,µµµµPC29M05A ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise specified) Rating Parameter Symbol µ PC29M33AHF, µ PC29M05AHF µPC29M33AHB, µPC29M05AHB µPC29M33AT, µPC29M05AT Unit Input Voltage VIN 20 V Internal Power Dissipation Note (TC = 25 °C) PT 15 10 W Operating Ambient Temperature TA –30 to +85 °C Operating Junction Temperature TJ –30 to +150 °C Storage Temperature Tstg –55 to +150 °C Thermal Resistance (junction to case) Rth(J-C) 7 12.5 °C/W Thermal Resistance (junction to ambient) Rth(J-A) 65 125 °C/W Note Internally limited. When the operating junction temperature rises over 150 °C, the internal circuit shuts down the output voltage. Caution If the absolute maximum rating of any of the above parameters is exceeded even momentarily, the quality of the product may be degraded. In other words, absolute maximum ratings specify the values exceeding which the product may be physically damaged. Be sure to use the product with these ratings never exceeded. STANDARD CONNECTION D1 INPUT COUT CIN D2 + PC29M33A, PC29M05A OUTPUT CIN: 0.1 µF or higher. Set this value according to the length of the line between the regulator and INPUT pin. Be sure to connect CIN to prevent parasitic oscillation. Use of a film capacitor or other capacitor with excellent voltage and temperature characteristics is recommended. If using a laminated ceramic capacitor, it is necessary to ensure that CIN is 0.1 µF or higher for the voltage and temperature range to be used. COUT: 47 µF or higher. Be sure to connect COUT to prevent oscillation and improve excessive load regulation. Place CIN and COUT as close as possible to the IC pins (within 2 cm). Also, use an electrolytic capacitor with low impedance characteristics if considering use at sub-zero temperatures. D1: If the OUTPUT pin has a higher voltage than the INPUT pin, connect a diode. D2: If the OUTPUT pin has a lower voltage than the GND pin, connect a Schottky barrier diode. Caution Make sure that no voltage is applied to the OUTPUT pin from external. |
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