FP5148

FP5148 2 Channel Synchronous Buck PWM Controller General Description The FP5148 is a dual channel synchronous buck switching controller with adjustable over-current protection for DC-DC applications. The FP5148 includes two stage 180° out of phase for driving NMOS, power down under-voltage lockout circuit (UVLO) , the inverting input of amplifier connects to a 0.8V precision reference regulator , short circuit and over current shutdown protection circuit (SCP / OCP)and programmable soft start function. Features  Wide Supply Voltage Operating Range: 4.2~15V  Precision Reference Voltage: 0.8V ±2%  Peak Output Source / Drive Capability: 500mA  Totem-pole Output for MOS Driving  Programming Oscillation Frequency  Programmable Soft Start Function (SS)  OC/SC Protection Function (OCP / SCP)  UVLO Protection Function  Package: SOP-16L, SOP-16L (EP) Applications  VGA Card  Battery Charger  Hard Disk Drive  Multi-Output Application This datasheet contains new product information. Feeling Technology 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 accompany the sales of the product. Website: http://www.feeling-tech.com.tw Rev. 0.9 1/13 FP5148 Function Block Diagram 3V Vcc Bias Generator 3V 0.2V 20 µ A 64 µ A Max SS 1.25V POR V CH1 4.0V HDRV1 POR 0.8V 25K 25K FB1 Vc 3.5V Error Amp 0. 2V V CC LDRV1 Comp S Q GND R V CH2 COMP1 RT 0.8V 25K 25...