LTC3406A LINER [Linear Technology], LTC3406A Datasheet - Page 6

• Manufacturer Part Number: LTC3406A
• Description: 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT
• Manufacturer: LINER [Linear Technology]

PIN FUNCTIONS
LTC3406A
RUN (Pin 1): Run Control Input. Forcing this pin above 1.5V
enables the part. Forcing this pin below 0.3V shuts down
the device. In shutdown, all functions are disabled drawing
<1μA supply current. Do not leave RUN fl oating.
GND (Pin 2): Ground Pin.
SW (Pin 3): Switch Node Connection to Inductor. This pin
connects to the drains of the internal main and synchronous
power MOSFET switches.
FUNCTIONAL DIAGRAM
6
RUN
V
1
5
FB
0.6V REF
V
IN
SHUTDOWN
SHIFT
FREQ
OSC
0.6V
+
–
EA
SLOPE
COMP
–
+
OSC
0.4V
V
GND, Pin 2, with a 2.2μF or greater ceramic capacitor.
V
from an external resistive divider across the output.
RS LATCH
+
–
IN
FB
S
R
BURST
(Pin 4): Main Supply Pin. Must be closely decoupled to
(Pin 5): Feedback Pin. Receives the feedback voltage
Q
Q
SLEEP
SWITCHING
BLANKING
CIRCUIT
LOGIC
AND
0.65V
–
I
SHOOT-
COMP
ANTI-
THRU
I
RCMP
+
–
+
5Ω
3406A BD
4
3
2
V
SW
GND
3406afa
IN