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Partname: | SG1577A |
Description: | Dual Synchronous DC/DC Controller |
Manufacturer: | Fairchild Semiconductor |
Datasheet: | PDF (582K). Click here to download *) |
The SG1577A is a high-efficiency, voltage-mode, dualchannel, synchronous DC/DC PWM controller for two independent outputs. The two channels are operated out of phase. The internal reference voltage is trimmed to 0.7V1.5%. It is connected to the error amplifier's positive terminal for voltage feedback regulation. The soft-start circuit ensures the output voltage can be gradually and smoothly increased from zero to its final regulated value. The soft-start pin can also be used for chip-enable function. When two soft-start pins are grounded, the chip is disabled and the total operation current can be reduced to under 0.7mA. |
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Click here to download SG1577A Datasheet*) |
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