MAX1744AUB+

MAXIM INTEGRATED PRODUCTS  MAX1744AUB+  芯片, 降压直流/直流控制器, 高电压

The is a high voltage, step down DC to DC controller in 10 pin µMAX package. The step down DC to DC controller capable of handling up to 36V inputs. It use a current-limited control scheme for excellent light and full-load efficiency while the 330KHz max switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest possible dropout voltage. The MAX1744 contains an internal feedback network that provides a pin-selectable output voltage of either 3.3V or 5V.

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Supply voltage range is 4.5V to 36V

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Operating temperature range from -40°C to 125°C

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Quiescent current is 90µA

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Shutdown current is 4µA

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Output power capability exceeds 50W

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Low dropout voltage

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Efficiency is greater than 90%