EUP3290 EUTECH | Alldatasheet
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Technical content
DS3290 Ver1.0 Sep. 2012 1A, 2.25MHz Synchronous Step-Down DC/DC Regulator
DESCRIPTION
The EUP3290 is synchronous step-down DC-DC converters optimized for battery powered portable applications. The 2.7V to 5.5V input voltage range makes EUP3290 ideal for powering portable equipment that runs from 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3V or 5V voltage rail. The EUP3290 operates at 2.25MHz fixed switching frequency allowing the use of small inductors and capacitors to achieve a small solution size. The internal synchronous switch increases efficiency and eliminates the need for an external schottky diode. The EUP3290 has internal soft start and avoids inrush current during startup. The EUP3290 has a user selectable mode of forced PWM and PFM/PWM mode. The forced PWM mode operation provides the lowest ripple noise and the PFM mode operation provides high efficiency at light loads. The EUP3290 is available in TSOT23-5 and TDFN-6 package. For TDFN-6 package, it provides up to 1A output current. Typical Application Circuit
FEATURES
/circle6 High Efficiency Up to 95% /circle6 2.25MHz Constant Switching Frequency /circle6 1A Available Load Current /circle6 30µA Typical Quiescent Current /circle6 2.7V to 5.5V Input V oltage Range /circle6 Adjustable Output V oltage as Low as 0.6V /circle6 No Schottky Diode Required /circle6 Short Circuit and Thermal Protection /circle6 Internal Soft Start Function /circle6 Available in TDFN-6 and TSOT23-5 Packages /circle6 RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free
APPLICATIONS
/circle6 SSD Module /circle6 Smart Phones /circle6 Tablet PC /circle6 Portable Media Players /circle6 µC/ µP, FPGA and DSP Power /circle6 Plug-in DC/DC Modules for Routers and Switchers Figure 1.