INTRODUCTION
The CE8303 is a CMOS PFM-control step-up switching DC/DC converter. The PFM controller allows the duty ratio to be automatically switched according to the load, enabling products with a low ripple over a wide range, high efficiency, and high output current. With the CE8303, a step-up switching DC/DC converter can be configured by using an external coil, capacitor, and diode. 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. This feature, along with the mini package and low current c***umption, makes the CE8303 ideal for applicati*** such as the power supply unit of portable equipment.
FEATURES
Low voltage operation: Startup at 0.9 V @IOUT = 1 mA
Working frequency: 300KHz
External parts: Coil, capacitor, diode
Accuracy of &plu***n;2%
High efficiency： 87%（typ.）
Shutdown function
Low ripple, Low noise
APPLICATI***
Digital cameras
Electronic notebooks and PDAs
Portable CD/MD players
Cameras, video equipment,
Communicati*** equipment
Power supply for microcomputers