LTC3410
PI FU CTIO S
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 floating.
GND (Pins 2, 5):
Ground Pin.
SW (Pin 3):
Switch Node Connection to Inductor. This pin
connects to the drains of the internal main and synchro-
nous power MOSFET switches.
V
IN
(Pin 4):
Main Supply Pin. Must be closely decoupled
to GND, Pin 2, with a 2.2µF or greater ceramic capacitor.
V
FB
(Pin 6 Adjustable Version ):
Feedback Pin. Receives
the feedback voltage from an external resistive divider
across the output.
V
OUT
(Pin 6 Fixed Voltage Versions):
Output Voltage
Feedback Pin. An internal resistive divider divides the
output voltage down for comparison to the internal refer-
ence voltage.
FU CTIO AL DIAGRA
SLOPE
COMP
OSC
OSC
FREQ
SHIFT
V
FB
/V
OUT
6
R1*
R2
240k
V
IN
0.8V
EA
RUN
1
0.8V REF
SHUTDOWN
*R1 = 240k
V
OUT
–1
0.8
6
–
(
)
I
RCMP
+
W
–
+
U
U
U
U
U
0.65V
4
V
IN
–
+
0.4V
–
+
EN
SLEEP
–
BURST
Q
I
COMP
+
5Ω
S
R
Q
RS LATCH
SWITCHING
LOGIC
AND
BLANKING
CIRCUIT
ANTI-
SHOOT-
THRU
3
SW
5
2
GND
3410 BD
3410fb
LINER [ LINEAR TECHNOLOGY ]
