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                                      SY21195 -

                                      Features

                                      ·         Low RDS(ON) for Internal Switches (Top/Bottom): 40mΩ/26mΩ

                                      ·         4.5-18V Input Voltage Range

                                      ·         5.0A Output Current Capability

                                      ·         500 kHz Switching Frequency

                                      ·         Instant PWM Architecture to Achieve Fast Transient Responses.

                                      ·         Internal Softstart Limits The Inrush Current

                                      ·         Cycle-By-Cycle Peak Current Limitation

                                      ·         1.5% 0.6V Reference

                                      ·         TSOT23-6 Package

                                      Typical Application

                                      Description

                                      The SY21195 is a high efficiency 500 kHz synchronous step down DC/DC converter capable of delivering 5.0A current. The SY21195 operates over a wide input voltage range from 4.5V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.


                                      Low output voltage ripple and small external inductor and capacitor sizes are achieved with 500 kHz switching frequency. It adopts the instant PWM architecture to achieve fast transient responses for high step down applications.

                                      Applications

                                      ·       Set Top Box

                                      ·       Portable TV

                                      ·       Access Point Router

                                      ·       DSL Modem

                                      ·       LCD TV

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