供应CX8517 2.4A可过认证车充方案 DC-DC降压IC

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3.** 180KHz 36V Buck DC to DC Converter With CV/CC Loop                              CX8517 



Features                                             General Description 

n Wide 8V to 36V Input Voltage Range                 The  CX8517  is  a  180 KHz  fixed  frequency 

n Output Adjustable from 1.25V to 32V                PWM    buck   (step-down)   DC/DC    converter, 

n Maximum Duty Cycle **                            capable  of  driving  a 3.**   load  with  high 

n Minimum Drop Out 0.3V                              efficiency,  low  ripple  and  excellent  line  and 

n Fixed 180KHz Switching Frequency                   load   regulation.   Requiring    a   minimum 

n Maximum 3.** Switching Current                     number of external components, the regulator 

n Internal Optimize Power MOSFET                     is  simple   to   use   and   include   internal 

n High efficiency                                    frequency       compensation         and      a 

n Excellent line and load regulation                 fixed-frequency oscillator. 

n With output constant current loop 

n Built in thermal shutdown function 

                                                     The PWM control circuit  is able to adjust the 

n Built in current limit function 

                                                     duty ratio  linearly  from  0 to  **. An  over 

n Built in output short protection function 

                                                     current protection  function    is  built inside. 

n SOP8-EP package 

                                                     When  short  protection  function  happens, the 

                                                     operation  frequency   will  be  reduced   from 

                                                     180KHz to 48KHz. An internal compensation 

                                                     block   is  built  in  to  minimize    external 

Applications                                         component count. 

n Car Charger 

n Battery Charger 

n LCD Monitor and LCD TV 

n Portable instrument power supply 

n Telecom / Networking Equipment