LT8471IUFD#PBF

LINEAR TECHNOLOGY  LT8471IUFD#PBF  芯片, 直流/直流转换器, 升压/降压, 2MHZ, QFN-28 新

The is a dual multitopology DC to DC converter with 2A switches and synchronization in 28 pin QFN package. This dual PWM DC to DC converter contains two internal 2A, 50V switches and an additional 500mA switch to facilitate step-down and inverting conversion. Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback or inverting converter. Capable of generating positive and negative outputs from a single input rail, the LT8471 is ideal for many local power supply designs. The LT8471 has an adjustable oscillator set by a resistor placed from RT pin to ground. Additionally, the LT8471 can be synchronized to an external clock. The free running or synchronized switching frequency range of part can be set between 100KHz and 2MHz. Additional features such as frequency foldback, soft-start and power good are integrated.

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2A primary channels can be buck, boost, SEPIC, ZETA, flyback or inverting DC to DC converter

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500mA skyhook channel efficiently generates boosted input voltage

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Wide input voltage range of 2.6V to 50V

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UVLO and OVLO programmable on OV/UV pin

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Soft start programmable for each channel

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Fixed frequency PWM set by RT pin or synchronized to external clock

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Anti phase switching reduces input ripple

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Quiescent current VIN1, skyhook disabled of 2.2mA at VOV/UV = 1.3V, not switching

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Quiescent current of 0.01µA in shutdown at VOV/UV = 0V

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