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.
SGND for single phase operation on each channel. For
PolyPhase operation, tie the master’s I to SGND while
THM
connecting all of the I
pins together at the master.
THM
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.
FB1 and FB2 (D8 and K8): The Negative Input of the Error
AmplifierforEachChannel.Internally,thispinisconnected
to V
with a 10k precision resistor. Different output
OUT
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.
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.
I
and I (F8 and M8): Current Control Threshold and
TH2
TH1
ErrorAmplifierCompensationPointforEachChannel. The
current comparator threshold increases with this control
voltage. Tie together in parallel operation.
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.
I
TH
andI
(E7andL7):NegativeInputtotheInternal
THM1
THM2
I
Differential Amplifier for Each Channel. Tie this pin to
4616fe
8
For more information www.linear.com/LTM4616
LINEAR_DIMENSIONS [ Linear Dimensions ]
