LTM4616
PIN FUNCTIONS
already low. Do not float this pin. A resistor and capacitor
can be applied to the TRACK pin to increase the soft-start
time of the regulator. TRACK1 and TRACK2 can be tied
together for parallel operation and tracking. See the Ap-
plications Information section.
FB1 and FB2 (D8 and K8):
The Negative Input of the Error
Amplifier for Each Channel. Internally, this pin is connected
to V
OUT
with a 10k precision resistor. Different output
voltages can be programmed with an additional resistor
between FB and GND pins. In PolyPhase
®
operation, tying
the FB pins together allows for parallel operation. See the
Applications Information section for details.
I
TH1
and I
TH2
(F8 and M8):
Current Control Threshold and
Error Amplifier Compensation Point for Each Channel. The
current comparator threshold increases with this control
voltage. Tie together in parallel operation.
I
THM1
and I
THM2
(E7 and L7):
Negative Input to the Internal
I
TH
Differential Amplifier for Each Channel. Tie this pin to
SGND for single phase operation on each channel. For
PolyPhase operation, tie the master’s I
THM
to SGND while
connecting all of the I
THM
pins together at the master.
PGOOD1 and PGOOD2 (A11 and G11):
Output Voltage
Power Good Indicator for Each Channel. Open-drain logic
output that is pulled to ground when the output voltage
is not within ±10% of the regulation point. Power good
is disabled during margining.
RUN1 and RUN2 (F6 and M6):
Run Control Pin. A voltage
above 1.7V will turn on the module.
SW1 and SW2 (B6 and H6):
Switching Node of Each
Channel That is Used for Testing Purposes. This can be
connected to an electronically open circuit copper pad on
the board for improved thermal performance.
CLKOUT1 and CLKOUT2 (F7 and M7):
Output Clock
Signal for PolyPhase Operation. The phase of CLKOUT is
determined by the state of the PHMODE pin.
4616fe
8
For more information
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
