CE8401

Synchronous Step-Up DC/DC Converter with PFM Control CE8401 Series Synchronous Step-Up DC/DC Converter with PFM Control CE8401 Series  INTRODUCTION The CE8401 Series is a Synchronous step-up DC/DC Converter with PFM Control. With the CE8401 Series, a step-up switching DC/DC converter can be configured by using an external coil, capacitor. The built-in MOSFET is turned off by a protection circuit when the voltage at the LX pin exceeds the limit to prevent it from being damaged.  FEATURES  External parts: Coil, capacitor  Output voltage: Settable to between 2.1V to 5.5 V in 0.1 V steps  Maximum Oscillation frequency:300KHz  Accuracy of ±2%  High efficiency：95%  APPLICATIONS  Digital cameras  Electronic notebooks and PDAs  Portable CD/MD players  Cameras, video equipment,  Communications equipment  Power supply for microcomputers  BLOCK DIAGRAM LX Current Limiting comparator buffer PFM control Error Amplifier EN Chip Enable OS...