Motorola 168VA cell phone car charger

Published:2011/7/14 21:04:00 Author:TaoXi | Keyword: Motorola, cell phone, car, charger | From:SeekIC

There is one kind of car charger that is suitable for the Motorola 168VA cell phone, it's volume is small and exquisite, and it can directly plug into the car cigarette lighter socket. But it has no circuit diagram, so the maintenance is inconvenience. The measured circuit is as shown in the figure for reference. The UTC34063 is the 8-pin dual-row DIP IC, it is the single chip buck-boost DC converter control IC. This IC has the temperature compensator, the comparator, the high current output switch. The oscillation frequency is 100KHz. The measured data is as shown in the table. Pin .....Resistance ......Voltage(V)......Red measurement(KΩ) Black measurement(KΩ) 1 ......4.1 ......8.2 .......12 2 ......0.8...... 7.8...... 8.28 3 ......5.8 ......22 .......0.65 4 .......0 ........0......... 0 5 .......1........ 1 .......1.26 6 ......4.2 ......8.2 .......12 7 ......4.2 ......8.2 .......12 8 .......5........ 10 ......10.6



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