EUP3426 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – 3A, Synchronous Step-Down Converter

EUP3426
3A, Synchronous Step-Down Converter
DESCRIPTION
The EUP3426 is a 1 MHz fixed frequency synchronous,
current-mode, step-down dc-dc converter capable of
providing up to 3A output current. The EUP3426
operates from an input range of 2.7V to 5.5V and
provides a regulated output voltage from 0.6V to 5V.
The internal synchronous power switch improves
efficiency and eliminates the need for an external
Schottky diode. The EUP3426 can be externally set for
either forced PWM continuous mode or pulse skipping
mode. Forced PWM operation provides very low output
ripple voltage for noise sensitive applications while
pulse skipping operation improves light load efficiency
by reducing switching loss.
The EUP3426 features short circuit and thermal
protection circuits to improves system reliability.
Internally soft-start avoids input inrush current during
startup. The EUP3426 is available in TDFN
3mm × 3mm 10-pin package with the exposed pad.
Typical Application Circuit
FEATURES
z 2.7V to 5.5V Input Voltage Range
z High Efficiency up to 96%
z 3A Available Load Current
z 57/35mΩ Integrated PFET/NFET Switches
z 1MHz Switching Frequency
z 100% Duty Cycle Low Dropout Operation
z Short Circuit and Thermal Protection
z Integrated UVLO and Power Good
z Excellent Line and Load Transient Response
z Available in 0.9V, 1.0V, 1.2V, 1.8V and
Adjustable Output Voltages
z Available in 10-Pin 3mm× 3mm TDFN Package
z RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
z Distributed 3.3V and 5V Power Supplies
z High Performance DSPs, FPGAs, ASICs and
Microprocessors
z Base Station, Telecom, and Networking
Equipment Power Supplies
z ePC and NetPCs
DS3426 Ver0.1 Sep. 2010
Figure1. Adjustable Output Regulator
1