SY7104

Applications Note:SY7104 High Efficiency 6V, 4A, 1MHz Step Up Regulator General Description SY7104 is a high efficiency, current-mode control Boost DC to DC regulator with an integrated 90mΩ RDS(ON) N-channel MOSFET. The fixed 1MHz switching frequency and internal compensation reduce external component count and save the PCB space. The build-in internal soft start circuitry minimizes the inrush current at start-up. Features Wide input range: 2-6V 1MHz switching frequency Minimum on time: 100ns typical Minimum off time: 100ns typical Max output voltage: 6V Internal 4A switch Internal soft start Over temperature protection Over current protection Low RDS(0N): 90mΩ typical RoHS Compliant and Halogen Free Compact package: DFN3х 3-10 Ordering Information SY7104□(□□)□ Temperature Code Package Code Optional Spec Code Temperature Range: -40°C to 85°C Ordering Number SY7104DBC Package type DFN3×3-10 Note 4A Applications 1-cell Li-ion Battery powered applications Portable devices Typical Applications TE C Co rp Figure 1. Schematic Diagram .C on fid en tia l-P re pa re d fo rC O N SY7104 Rev. 0.9B Si le rg Figure 2. Efficiency vs Load Current y Silergy Corp. Confidential- Prepared for Customer Use Only 1 Free Datasheet http://www.0PDF.com SY7104 Pinout ( top view) NC FB NC LX LX 1 2 3 4 5 11 GND 10 NC 9 8 7 6 EN NC VDD NC (DFN3×3-10) Top Mark: ELxyz (Device code: EL , x=year code, y=week code, z= lot number code) ` Pin Name NC GND LX ...