3A, 18V, Synchronous Step-down DC/DC Converter

EC3293

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3L03N-Rev.P001

General Description

The EC3293 is a high-frequency, synchronous, rectified,

step-down, switch-mode converter with internal power

MOSFETs. It offers a very compact solution to achieve

a 3A continuous output current over a wide input supply

range, with excellent load and line regulation.

The EC3293 has synchronous-mode operation for higher

efficiency over the output current-load range.

Current-mode operation provides fast transient response

and eases loop stabilization.

Protection features include over-current protection and

thermal shutdown.

The EC3293 requires a minimal number of readily

available, standard external components and is available

in a space-saving SOP-8L(Exposed Pad) package.

Features

● 4.75V to 18V input voltage

● Output adjustable from 0.923V to 15V

● Output current up to 3A

● Integrated 105mΩ/85mΩ power MOSFET switches

● Shutdown current 3μA typical

● Efficiency up to 95%

● Programmable switching frequency up to 1.5MHz

● Internal soft start

● Over current protection and Hiccup

● Over temperature protection

● RoHS Compliant and 100% Lead (Pb) Free

Applications

● Distributed power systems

● Networking systems

● FPGA, DSP, ASIC power supplies

● Notebook computers

● Green electronics or appliance

Pin Assignments

Pin Description

Pin

Symbol

Description

1

BOOT

High-side Gate drive boost input.

2

IN

Power Input

3

SW

Power Switching Output.

4

GND

Ground.

5

FB

Feedback input.

6

COMP

Compensation node

7

EN

Enable Input.

8

FREQ

Switching Frequency Program Input.