LTC3836 LINER [Linear Technology], LTC3836 Datasheet - Page 7

• Manufacturer Part Number: LTC3836
• Description: Dual 2-Phase, No RSENSETM Low VIN Synchronous Controller
• Manufacturer: LINER [Linear Technology]

PIN FUNCTIONS
FUNCTIONAL DIAGRAM
BOOST1/BOOST2 (Pins 27, 16)/(Pins 24, 13): Positive
Supply Pin for the Gate Driver Circuitry. A bootstrapped
capacitor, charged with an external Schottky diode and a
boost voltage source, is connected between the BOOST
and SW pins. Voltage swing at the BOOST pins is from
boost source voltage (typically V
voltage + V
IN
.
SYNC/FCB
RUN/SS
PLLLPF
UNDERVOLTAGE
LOCKOUT
0.6V
0.65μA
(GN/UFD Package)
–
+
IN
SYNC DETECT
CONTROLLED
OSCILLATOR
) to this boost source
VOLTAGE
FCB
V
IN
EXTSS
REFERENCE
VOLTAGE
(Common Circuitry)
CLK1
CLK2
FCB
SHDN
t
SEC
C
VIN
= 1ms
DETECTOR
0.54V
R
0.6V
V
PHASE
VIN
REF
V
V
FB1
FB2
V
(TO CONTROLLER 1, 2)
IN
SENSE1
Input to Differential Current Comparator. Also powers the
gate drivers. Normally connected to the drain of the main
external MOSFET.
Exposed Pad (Pin 29) UFD Package Only: Must be sol-
dered to PCB ground.
SLOPE
COMP
–
+
+
–
–
+
+
/SENSE2
UV1
UV2
SLOPE1
SLOPE2
+
OV1
INTSS
(Pins 28, 5)/(Pins 25, 12): Positive
SHDN
OV2
PGOOD
37362 FD
LTC3836
3836fa
7