EUP3421
2A, Synchronous Step-Down Converter
DESCRIPTION
The EUP3421 is a 1 MHz fixed frequency synchronous, current-mode...
EUP3421
2A, Synchronous Step-Down Converter
DESCRIPTION
The EUP3421 is a 1 MHz fixed frequency synchronous, current-mode, step-down dc-dc converter capable of providing up to 2A output current. The EUP3421 operates from an input range of 2.7V to 5.5V and provides a regulated output voltage from 0.8V to 5V. The internal synchronous power switch improves efficiency and eliminates the need for an external
Schottky diode. Forced PWM operation provides very low output ripple voltage for noise sensitive applications. The EUP3421 features short circuit and thermal protection circuits to improve system reliability. Externally adjustable soft-start avoids input inrush current during startup. The EUP3421 is available in SOP-8 package.
FEATURES
2.7V to 5.5V Input Voltage Range High Efficiency up to 96% 2A Available Load Current 100/60mΩ Integrated PFET/NFET Switches 1MHz Switching Frequency 100% Duty Cycle Low Dropout Operation Short Circuit and Thermal Protection Integrated UVLO Excellent Line and Load Transient Response Available in SOP-8 Package RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free
APPLICATIONS
High Performance DSPs, FPGAs, ASICs and Microprocessors Base Station, Telecom, and Networking Equipment Power Supplies ePC and NetPCs
Typical Application Circuit
Figure1. Typical Application Circuit
DS3421
Ver1.0
Jun. 2011
1
EUP3421
Pin Configurations
Package Type Pin Configurations
SOP-8
Pin Description
PIN AVIN SS GND FB EN PGND LX PVIN SOP-8 1 2 3 4 5 6 7 8 DESCRIPT...