LTC3406AB

5

3406abfa

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.

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

from an external resistive divider across the output.

TYPICAL PERFORMANCE CHARACTERISTICS

(From Front Page Figure Except for the Resistive Divider Resistor Values)

Start-Up from Shutdown

Load Step

Load Step

Load Step

Load Step

Discontinuous Operation

RUN

2V/DIV

1V/DIV

500mA/DIV

400

μs/DIV

3406B G31

200mV/DIV

500mA/DIV

500mA/DIV

20

μs/DIV

3406B G32

200mV/DIV

500mA/DIV

500mA/DIV

20

μs/DIV

3406B G33

200mV/DIV

500mA/DIV

500mA/DIV

20

μs/DIV

3406B G34

200mV/DIV

500mA/DIV

500mA/DIV

20

μs/DIV

3406B G35

20mV/DIV

AC COUPLED

SW

(2V/DIV)

200mA/DIV

500ns/DIV

3406B G36