SL8335 Small Package PFM Control Step-UpDC/DC Converter

 INTRODUCTIO


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 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 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