LTC3410-1.875 LINER [Linear Technology], LTC3410-1.875 Datasheet - Page 6

• Manufacturer Part Number: LTC3410-1.875
• Description: 2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
• Manufacturer: LINER [Linear Technology]

FU CTIO AL DIAGRA
PI FU CTIO S
LTC3410-1.875
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.
6
V
U
RUN
U
OUT
1
6
0.8V REF
U
V
IN
U
SHUTDOWN
322.5k
240k
R2
R1
U
SHIFT
FREQ
OSC
V
FB
0.8V
+
–
SLOPE
EA
COMP
W
–
+
OSC
0.4V
RS LATCH
V
to GND, Pin 2, with a 2.2µF or greater ceramic capacitor.
V
tive divider divides the output voltage down for compari-
son to the internal 0.8V reference voltage.
+
–
S
R
IN
OUT
BURST
EN
(Pin 4): Main Supply Pin. Must be closely decoupled
Q
Q
(Pin 6): Output Voltage Feedback. An internal resis-
SLEEP
SWITCHING
BLANKING
CIRCUIT
0.65V
LOGIC
AND
–
I
SHOOT-
COMP
ANTI-
THRU
I
RCMP
+
–
+
5Ω
34101875 BD
4
3
5
2
34101875f
V
SW
GND
IN