General Description

The EM5845 is a high efficiency synchronous buck converter.

It can support 3.5A continuous output current. The constant

on-time control provides fast transient response and allows a

small footprint when designed all ceramic output capacitors.

Other features include internal soft-start, under-voltage

protection, over-voltage protection, cycle-by-cycle current

limit and thermal shutdown function. With aforementioned

functions, these parts provide customers a compact, high

efficiency, well-protected and cost-effective solutions. These

parts are available in DFN3X3 package.

Applications

 Notebook & Tablet

 Graphic Cards & MB

 Low Voltage Logic Supplies

 Chipset Supplies

 Server System

 SMPS Post Regulators

Features

 Constant On Time Control

 2.7V to 5.5V Operating Input Range

 0.6V, 1% Voltage Reference Accuracy

 Up to 3.5A Output Current

 Stable with Low ESR Output Ceramic Capacitors

 Default 1 MHz frequency operation

 Internal Soft Start / Soft Stop

 80m and 40m Internal Power MOSFET Switches

 Cycle-by-Cycle Current Limit

 Output Under Voltage Protection

 Output Over Voltage Protection

 Power Good Indicator for Power Sequence Control

 Available in a DFN3X3 Packag