LTC2970IUFD#PBF

LTC2970 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/DC converter output voltages. The IDACs can be configured to automatically servo the power supplies to the desired voltages using the ADC. It is widely used in application such as dual power supply voltage servo, monitoring supply voltage and current, programmable power supplies, programmable reference etc.

• Linear, voltage servo adjusts supply voltages by ramping IDAC outputs up/down
• I²C bus interface (SMBus compatible)
• Extensive, user configurable fault monitoring
• On-chip temperature sensor
• VDD supply current is 3.7mA typical at (TA = 25°C, V12VIN = 12V)
• Integral nonlinearity is ±1LSB max at (TA = 25°C, V12VIN = 12V)
• Differential nonlinearity is ±1LSB max at (TA = 25°C, V12VIN = 12V)
• Supply input operating range is 4.5V to 5.75V
• Operating temperature is -40°C to 85°C
• Package style is 24-pin plastic QFN

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