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LP6230C 数据表(PDF) 2 Page - Lowpower Semiconductor inc |
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LP6230C 数据表(HTML) 2 Page - Lowpower Semiconductor inc |
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2 / 7 page ![]() LP6230C Jun.-2014 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 7 Preliminary Datasheet LP6230C Functional Pin Description Package Type Pin Configurations MSOP8 NC FB EN GND NC NC VIN SW 1 2 3 4 5 6 7 8 Pin Name Description 1,7,8 NC No Connector. 2 FB Regulation Feedback Input. Connect to an external resistive voltage divider from the output to FB to set the output voltage. 3 EN Regulator ON/OFF Control Input. A logic high input(VEN>1.4V) turns on the regulator. A logic low input(VEN<0.4V) puts the LP6230C into low current shutdown mode. 4 GND Ground. 5 SW Switching pin. 6 VIN Power Supply pin. Function Diagram 1.25V VREF VIN FB RC CC ERROR AMP. PWM COMPARATION PWM/PFM CONTROL CONTROL LOGIC DRIVER SLOPE COMPENSATION 1.2MHz OSCILLATOR CURRENT AMP. RS GND SW EN M1 + - + - + - |
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