APE1901 Datasheet | Advanced Power Electronics Corp

Advanced Power Electronics Corp. Step-up PWM DC/DC Converter ™ GENERAL DESCRIPTION The APE1901 is high efficient step-up DC/DC converter. Large output current is possible having a built in internal N channel MOSFET, and using an external coil and diode. The APE1901 can be operated at switching frequencies of 500k Hz allowing for easy filtering and low noise, the size of the external ponents can be reduced. Output voltage is programmable with 1.0V of standard voltage supply internal, and using externally connected ponents, output voltage (FB) can be set up at will. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents inrush-current at startup. An enable function and thermal shutdown functions are built inside. ™ Features Input voltage: 3V to 15V Output voltage: 3.3V to 28V(±2.5%） Duty ratio: 0% to 80% PWM control Switch current: 3A(MAX) Oscillation frequency: 500KHz. Enable function Soft-start function Thermal Shutdown function Built-in internal SW N-channel MOS SOP-8L Pb-Free Package. This datasheet contains new product information. Advanced Power Electronics Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent acpany the sale of the product. 200815071-1/7 Downloaded from Elcodis. electronic ponents distributor Advanced Power Electronics Corp. Step-up PWM DC/DC Converter ™ Block Diagram Vcc Phase pensation + + Vref with EN Buffer Driver PWM Controller EN Thermal Shutdown Oscillator Vss SGND ™ PIN ASSIGNMENT The package of AX5101A is SOP-8L; the pin assignment is given by: Name SGND 8 7 APE1901 VCC FB 3 4 SOP-8L 6 5 SW SW Vss Vss ( Top View ) SGND EN 1 2 EN VCC FB SW VSS Description Signal ground pin. Power-off pin H：normal operation(Step-up) L：Step-up operation stopped (All circuits deactivated) IC power supply pin Feedback pin Switch pin. Connect...