ESMT
Preliminary
EML3193B
3A, 36V, 2MHz Non-synchronous Step-Down Converter
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 with thermally
enhanced package.
Typical Application
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
Fig.1
Elite Semiconductor Memory Technology Inc.
Publication Date: Feb. 2016
Revision: 0.3
1/18
