EUP3412 Datasheet, PDF (1/11 Pages) Eutech Microelectronics Inc – 1.5A/1.5MHz, Synchronous Step-Down Converter with Soft Start

EUP3412
1.5A/1.5MHz, Synchronous
Step-Down Converter with Soft Start
DESCRIPTION
The EUP3412 is a synchronous current mode
step-down dc-dc converter, capable of driving 1.5A 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 EUP3412 operates at a fixed
switching frequency of 1.5MHz and PWM operation
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
EUP3412 is available in the 10-pin MSOP and 10-pin
TDFN package.
FEATURES
z High Efficiency up to 96%
z 1.5A Available 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 Soft Start Function
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
DS3412 Ver1.3 Mar. 2009
Figure 1.
1