LTC3406AB データシートの表示（PDF） - Linear Technology

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LTC3406AB

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

Linear Technology 

LTC3406AB

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

ICOMP

SQ

RQ

RS LATCH

SWITCHING

LOGIC

AND

BLANKING

CIRCUIT

ANTI-

SHOOT-

THRU

IRCMP

4 VIN

5Ω

3 SW

2 GND

3406AB BD

For more information www.linear.com/LTC3406AB

3406abfb

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