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UPC305 Datasheet(PDF) 1 Page - NEC |
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UPC305 Datasheet(HTML) 1 Page - NEC |
1 / 8 page The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. BIPOLAR ANALOG INTEGRATED CIRCUT µµµµPC305 POSITIVE VOLTAGE STABILIZED POWER SUPPLY Document No. G10633EJ3V0DS00 (3rd edition) Date Published December 1999 N CP(K) Printed in Japan DATA SHEET © 1999 DESCRIPTION The µPC305 is a high-performance stabilized power supply that can supply a constant voltage in a wide temperature range even if the input voltage or load voltage fluctuates, by integrating a high-gain error amplifier and a temperature-compensating constant-voltage diode on a single chip. FEATURES PIN CONFIGURATION (Top View) • Wide output voltage variable range Vo: 4.5 to 30 V, VDIF: 3 to 30 V • Excellent load stability 0.02% • Good ripple rejection ratio 0.003%/V ORDERING INFORMATION Part Number Package µPC305C 8-pin plastic DIP (7.62 mm (300)) µPC305G2 8-pin plastic SOP (5.72 mm (225)) EQUIVALENT CIRCUIT 3 2 1 8 7 6 5 4 Input Current output Current limiter Output Compensation Error detection Reference voltage GND Q18 Q1 R5 2.2 k Ω C1 5 pF Q2 Q3 Q17 Q16 Q5 Q15 Q14 Q9 Q7 Q8 Q10 Q13 Q12 Q11 Q4 R4 3 k Ω R3 6.8 k Ω R2 3 k Ω R6 4.4 k Ω Q6 R10 600 Ω R8 1.86 k Ω R9 1.32 k Ω R7 2.8 k Ω D1 1 2 3 4 8 7 6 5 Current limiter Current output Input GND Output Compensation Error detection Reference voltage PC305C, 305G2 µ |
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