LT8708-1
12
Rev 0
For more information
MODE (Pin 37): Conduction Mode Select Pin. The voltage
applied to this pin sets the conduction mode of the con-
troller. Apply less than 0.4V to enable continuous conduc-
tion mode (CCM). Apply 0.8V to 1.2V to enable the hybrid
conduction mode (HCM). Apply 1.6V to 2.0V to enable the
discontinuous conduction mode (DCM). Apply more than
2.4V to enable Burst Mode operation. It is recommended
to drive this pin with the same control signal, or connect
this pin to the same value resistor dividers or voltages as
the master LT8708.
IMON_OP (Pin 38): Average V
OUT
Current Regulation
Pin. This pin servos to 1.207V to regulate the average
output current based on the ICP and ICN voltages. Always
connect a 17.4k resistor in parallel with a compensa-
tion network from this pin to GND. See the Applications
Information section for more information.
IMON_ON (Pin 39): Negative V
OUT
Current Monitor Pin.
The current out of this pin is 20µA plus a current pro-
portional to the negative average V
OUT
current. See the
Applications Information section for more information.
LDO33 (Pin 40): 3.3V Regulator Output. Bypass this pin
to ground with a minimum 0.1µF ceramic capacitor. It is
recommended to use the same value bypass cap as the
master LT8708.
GND (Pin 15, Exposed Pad Pin 41): Ground. Tie directly
to local ground plane.
PIN FUNCTIONS
