Datasheet LTC3826 (Analog Devices) - 9

LTC3826
PIN FUNCTIONS PGOOD2 (Pin 28):
Open-Drain Logic Output. PGOOD2
VFB1, VFB2 (Pins 31, 11):
Receives the remotely sensed is pulled to ground when the voltage on VFB2 pin is not feedback voltage for each controller from an external within ±10% of its set point. resistive divider across the output.
TRACK/SS1, TRACK/SS2 (Pins 29, 13):
External Track-
SENSE1+, SENSE2+ (Pins 32, 10):
The (+) Input to the ing and Soft-Start Input. The LTC3826 regulates the Differential Current Comparators. The ITH pin voltage and VFB1,2 voltage to the smaller of 0.8V or the voltage on the controlled offsets between the SENSE– and SENSE+ pins in TRACK/SS1,2 pin. An internal 1μA pull-up current source conjunction with RSENSE set the current trip threshold. is connected to this pin. A capacitor to ground at this
Exposed Pad (Pin 33):
SGND. Must be soldered to the pin sets the ramp time to fi nal regulated output voltage. PCB. Alternatively, a resistor divider on another voltage supply connected to this pin allows the LTC3826 output to track the other supply during startup.
ITH1, ITH2 (Pins 30, 12):
Error Amplifi er Outputs and Switching Regulator Compensation Points. Each associ- ated channel’s current comparator trip point increases with this control voltage. 3826fc 9