LTC3374AIUHF#PBF

LINEAR TECHNOLOGY  LTC3374AIUHF#PBF  DC/DC Switching Regulator, Synchronous, 8 Output, 2.25 V to 5.5 V in, 5.5 V/1 A out, 2 MHz, QFN-38 新

The is a high accuracy 8-channel parallelable 1A buck DC to DC converter in 38 pin QFN package. This multi output power supply IC consists of eight synchronous 1A buck converters all powered from independent 2.25V to 5.5V input supplies. It is a upgraded pin compatible version of LTC3374 device and has higher efficiency, improved output voltage accuracy and an added overvoltage OV indicator. The DC to DC converter may be used independently or in parallel to achieve higher output currents of up to 4A with a shared inductor. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator or set to a default internal 2MHz clock. The operating mode for all DC to DC converters may be programmed via the MODE pin. To reduce input noise the buck converters are phased in 90° steps. Precision enable pin thresholds simplify power-up sequencing. It is typically used in general purpose multichannel power supplies.

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Master-slave configurable for up to 4A of output current with a single inductor

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VCC voltage range from 2.7V to 5.5V

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0.8V to VIN output range

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±1% VFB accuracy for buck 1 1A to 4A

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PGOOD accuracy of ±1%

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Precision enable pin thresholds for autonomous sequencing

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1MHz to 3MHz programmable/synchronizable oscillator frequency 2MHz default

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Die temperature monitor output

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VCC input supply current of 1µA all switching regulators in shutdown

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