EC3293B

3A, 18V, 500KHz,

Synchronous Step Down DC/DC Converter

E-CMOS Corp. (www.ecmos.com.tw)

5G01N-Rev. F002

1/11

General Description

The EC3293B

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 EC3293B 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 EC3293B requires a minimal number of readily available, standard external components and is available in

a space-saving TSOT23-6L package.

Features

● 4.5V to 18V input voltage

● Output adjustable from 0.6V to 15V

● Output current up to 3A

● Integrated 85mΩ/45mΩ power MOSFET switches

● Shutdown current 3μA typical

● Efficiency up to 95%

● Fixed frequency 500KHz

● 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

1

2

3

6

4 EN

GND

BOOT

IN

FB

Top View

TSOT23-6L

5

SW