LTC2970HUFD-1#PBF

LINEAR TECHNOLOGY LTC2970HUFD-1#PBF Power Management IC, I2C Power Supply Monitor & Margining Controller, 4.5V to 5.75V input, QFN-24 New

The from is a dual I2C power supply monitor and margining controller in 24 pin QFN package. It is a dual power supply monitor and margining controller with an SMBus compatible I2C bus interface. A low drift, on-chip reference and 14bit ΔΣ A/D converter allow precise measurements of supply voltages, load currents or internal die temperature. Fault management allows ALERT to be asserted for configurable overvoltage and undervoltage fault conditions. Two voltage buffered, 8bit IDACs allow highly accurate programming of DC to DC converter output voltages. The IDACs can be configured to automatically servo the power supplies to the desired voltages using ADC. The bus address is set to 1 of 9 possible combinations by pin strapping the ASEL0 and ASEL1 pins. It is used in dual power supply voltage servo, monitoring supply voltage and current, programmable power supplies and programmable reference.

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Less than ±0.5% total unadjusted error 14bit ADC with on-chip reference

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Dual, 8bit IDACs with 1x voltage buffers

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Linear voltage servo adjusts supply voltages by ramping IDAC outputs up/down

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I2C bus interface SMBus compatible

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Extensive, user configurable fault monitoring

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On-chip temperature sensor

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VDD supply current of 3.7mA

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Supply input operating range from 4.5V to 5.75V

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Tracking feature for turning multiple power supplies on or off in a controlled manner

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