EUP3419 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – Dual 1.5MHz, 1A Synchronous Step-Down Converter

EUP3419
Dual 1.5MHz, 1A Synchronous
Step-Down Converter
DESCRIPTION
The EUP3419 contains two independent 1.5MHz
constant frequency, current mode, PWM step-down
converters. Each converter integrates a main switch and
a synchronous rectifier for high efficiency without an
external Schottky diode. The EUP3419 is ideal for
powering portable equipment that runs from a single
cell Lithium-Ion (Li+) battery. Each converter can
supply 1A of load current from a 2.5V to 5.5V input
voltage. The output voltage can be regulated as low as
0.6V. The EUP3419 can also run at 100% duty cycle
for low dropout applications. 25µA per channel
quiescent current at light loads increases efficiency and
battery life.
Typical Application Circuit
FEATURES
z 25µA Quiescent Current per Channel at Light
Load
z Up to 96% Efficiency
z 1.5MHz Constant Switching Frequency
z 1A Load Current on Each Channel
z 2.5V to 5.5V Input Voltage Range
z Output Voltage as Low as 0.6V
z 100% Duty Cycle in Dropout
z Short Circuit Protection
z Thermal Fault Protection
z <1µA Shutdown Current
z Soft Start Function
z 3mm × 3mm TDFN-10 Package
z RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
z Cellular and Smart Phones
z Microprocessors and DSP Core Supplies
z PDAs and Portable Media Players
z Wireless and DSL Modems
z Digital Still and Video Cameras
DS3419 Ver1.0 Feb. 2010
Figure 1. Adjustable Voltage Regulator
1