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INTRODUCTION The SL8335 is a CMOS PFM-control step-up switching DC/DC converter. The VFM 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 SL8335, 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 circui 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 consumption, makes the SL8335 ideal for applications such as the power supply unit of portable equipment. FEATURES Low voltage operation: Startup at 0.9 V @IOUT = 1 mA Work frequency: 300KHz External parts: Coil, capacitor, diode Accuracy of ±2% High efficiency： 87%（typ.） Shutdown function Low ripple, Low noise APPLICATIONS Digital cameras Electronic notebooks and PDAs Portable CD/MD players Cameras, video equipment, Communications equipment Power supply for microcomputers BLOCK DIAGRAM 
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