LTC7106IDDB#TRMPBF

LTC7106 is a 7bit current DAC with PMBus interface. It is a precision, PMBus controlled, bidirectional current digital-to-analogue converter that adjusts the output voltage of any conventional VFB referenced regulator. It can work with the vast majority of power management controllers or regulators to enable digital control of the output voltage. Internal power-on reset circuitry keeps the DAC output current at zero (high impedance IDAC) until a valid write takes place. Features include a range bit for easy interfacing to almost any impedance resistor divider, and an open-drain GPO output for controlling the run or enable pin of the DC/ DC regulator. For most applications, the current DAC error is significantly attenuated with proper design. Application includes general purpose power systems, telecom systems, industrial applications.

• ±0.8% IDAC positive output current accuracy (over temp)
• ±1.5% IDAC negative output current accuracy (over temp)
• PMBus/I²C compliant serial interface, high impedance at IDAC output when disabled
• 7bit programmable DAC output current for DC/DC VOUT control
• Power supply range from 2.5 to 5.5V (TA = 25°C, VDD = 3.3V)
• 700μA typical supply quiescent current (EN high, TA = 25°C, VDD = 3.3V)
• 63μA typical accuracy (full scale positive, 0.4 ≤ VIDAC ≤ 2V, range = normal)
• 10pF maximum input capacitance (TA = 25°C, VDD = 3.3V)
• 0.4V maximum output low voltage (ISINK = 3mA, TA = 25°C)
• 10 lead plastic DFN package, operating temperature range from -40°C to 125°C

注释

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