General Description

The EML3193B is frequency adjustable, 3A,

current-mode step-down converter with an

integrated high-side switch. The EML3193B operates

with the wide input voltage from 4.5V to 36V and

provides an adjustable output voltage from 0.808V

to 30V. The EML3193B features a PWM mode

operation with up to 2MHz adjustable switching

frequency. The EML3193B also provides a highly

efficient solution with current mode control for fast

loop response and easy compensation. The

EML3193B automatically enters PSM mode at light

load.

Cycle-by-cycle current limiting and thermal

shutdown are provided for fault condition

protections. An internal 2ms soft-start design reduces

input start-up current and prevents the output

voltage and inductor current from overshooting

during power-up.

The EML3193B is available in E-SOP-8L and TDFN-10L

with thermally enhanced package.

Features

 4.5V to 36V Input Voltage Range

 3A Continuous Output Current

 120mΩ Internal Power MOSFET Switch

 Output Adjustable from 0.808V

 Output Over-Voltage Protection

 Up to 2MHz Adjustable Switching Frequency

 Cycle-by-Cycle Current Limit, Frequency Fold

Back and thermal shutdown

 Stable with Low ESR Output Ceramic

Capacitors

 2ms Internal Soft-Start

 Thermally Enhanced E-SOP-8L Package

Applications

 12V and 24V Distributed Power Systems

 Battery Powered Systems

 Industrial Power Systems

 LCD and Plasma TVs

 Automotive Systems