LTC3406AIS5 View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC3406AIS5

1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

Linear Technology 

LTC3406A

PIN FUNCTIONS

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 (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.

VIN (Pin 4): Main Supply Pin. Must be closely decoupled to

GND, Pin 2, with a 2.2μF or greater ceramic capacitor.

VFB (Pin 5): Feedback Pin. Receives the feedback voltage

from an external resistive divider across the output.

FUNCTIONAL DIAGRAM

SLOPE

COMP

OSC

OSC

FREQ

SHIFT

VFB

5

+

0.6V

– EA

VIN

RUN

1

0.6V REF

SHUTDOWN

0.65V

–

SLEEP

0.4V

+

BURST

ICOMP

SQ

RQ

RS LATCH

SWITCHING

LOGIC

AND

BLANKING

CIRCUIT

ANTI-

SHOOT-

THRU

IRCMP

4 VIN

5Ω

3 SW

2 GND

3406A BD

3406afa

6

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