EUP3420 Datasheet, PDF (1/11 Pages) Eutech Microelectronics Inc – 2A/1.5MHz, Synchronous Step-Down Converter with Soft Start

EUP3420
2A/1.5MHz, Synchronous
Step-Down Converter with Soft Start
DESCRIPTION
The EUP3420 is a synchronous current mode
step-down dc-dc converter, capable of delivering 2A
load current with excellent line and load regulation.
Operating with an input voltage range between 2.7V
and 5.5V, the device is ideal for portable applications
powered by a single Li-Ion battery cell or by 3-cell
NiMH/NiCd batteries. The EUP3420 operates at
1.5MHz fixed frequency PWM mode and provides very
low output ripple voltage for noise sensitive
applications. The internal integrated synchronous
switch increases efficiency while eliminates the need
for an external Schottky diode. The EUP3420 is
available in the 10-pin MSOP and 10-pin TDFN
package.
FEATURES
z High Efficiency up to 96%
z Up to 2A Load Current
z 300µA Typical Quiescent Current
z 1.5MHz Constant Switching Frequency
z 2.7V to 5.5V Input Voltage Range
z Adjustable Output Voltage as Low as 0.7V
z 100% Duty Cycle Low Dropout Operation
z No Schottky Diode Required
z Short Circuit and Thermal Protection
z Excellent Line and Load Transient Response
z
1µA Shutdown Current
z Built-In Soft-Start
z Available in MSOP-10 and TDFN-10 Package
z RoHS Compliant and 100% Lead(Pb)-Free
APPLICATIONS
z Cellular and Smart Phones
z Portable Media Players/ MP3 Players
z Digital Still and Video Cameras
z Portable Instruments
z WLAN PC Cards
Typical Application Circuit
DS3420 Ver1.2 Mar. 2009
Figure 1.
1