LTC3410
U
U
U
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.
VIN (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.
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.
VOUT (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.
U
U
W
FU CTIO AL DIAGRA
SLOPE
COMP
0.65V
OSC
OSC
V
4
IN
FREQ
–
+
SHIFT
V
/V
FB OUT
EN
–
+
6
SLEEP
+
–
5Ω
0.8V
+
–
R1*
0.4V
I
COMP
EA
BURST
R2
240k
Q
Q
S
R
SWITCHING
LOGIC
AND
RS LATCH
V
IN
ANTI-
SHOOT-
THRU
BLANKING
CIRCUIT
RUN
1
SW
3
0.8V REF
+
–
SHUTDOWN
5
2
I
RCMP
GND
V
OUT
*R1 = 240k
– 1
(
)
3410 BD
0.8
3410fb
6
Linear [ Linear ]
