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LT1766 Application Circuit

2014-11-25 09:12  
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LT1766 Application Circuit
The picture (a) shows the LT1766 internal equivalent circuit. In the chip it has the 200kHz oscillator, driving circuit, switch tube and other all function circuits which are needed by the buck voltage converter. The oscillation frequency is 20.0Hz and the internal-chip power transistor VT1's peak current is 1.5A. The picture (b) shows the buck voltage DC-DC converter composed of LT1766. It would convert the 5.5~60V input voltage to the 5V/1A output. This circuit's feature is wide input voltage range which is from 5.5 to 60V. It can be used in high-voltage car electronic devices, battery charger, distributed power supply and so on.