LTC3542EDC-1-PBF datasheet(6/16 Pages) LINER

Part #	LTC3542EDC-1-PBF

Description	500mA, 2.25MHz 2.8V Output Synchronous Step-Down DC/DC Converter

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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6 / 16 page

LTC3542-1

6

35421f

VOUT (Pin 1): Output Pin. Receives the 2.8V output voltage

to internal feedback resistors.

VIN (Pin 2): Power Supply Pin. Must be closely decoupled

to GND.

GND (Pin 3): Ground Pin.

SW (Pin 4): Switch Node Connection to Inductor. This pin

connects to the drains of the internal main and synchronous

power MOSFET switches.

MODE/SYNC (Pin 5): Mode Selection and Oscillator

Synchronization Pin. This pin controls the operation of

the device. When tied to GND or VIN, Burst Mode opera-

tion or pulse skipping mode is selected, respectively. The

oscillation frequency can be synchronized to an external

oscillator applied to this pin and pulse skipping mode is

automatically selected. Do not ﬂoat this pin.

RUN (Pin 6): Converter Enable Pin. Forcing this pin above

1.5V enables this part, while forcing it below 0.3V causes

the device to shut down. In shutdown, all functions are

disabled drawing <1μA supply current. This pin must be

driven; do not ﬂoat.

GND (Pin 7): Exposed Pad. The Exposed Pad is ground. It

must be soldered to PCB ground to provide both electrical

contact and optimum thermal performance.

PIN FUNCTIONS

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