SY6818 Datasheet | Silergy

Application Note: SY6818 High Current Overvoltage Protection Switch With Integrated Reverse Blocking FET General Description SY6818 is an over voltage protection switch with high current capability to prevent damage to the downstream system with low voltage rating. It achieves wide input voltage range from 2.5 VDC to 30 VDC . Programmable OVP is available with simple external resistor divider. Integrated reverse blocking FET up to 20V rating prevents the leakage current from output side to input side when the input power supply is removed, but without output discharging. Extremely low power path resistance RPWPT helps to reduce power loss during the normal operation. Enable control is available to cut off the energy path. High accuracy current indicator is employed internally. It integrates the overtemperature protection shutdown and auto-recovery with hysteresis to protect against over temperature events. It has a default over current protection up to 5 A internally and auto- recovery. Each auto- recovery process is posed of deglitch time TDG and switch turn-on time TON . This IC along with CSP- 12, 1.73mmx1.73mm footprint provides small PCB area application. Ordering Information - ( - - ) - Tempera ture Code Packa ge Code Optiona l Spec Code Ordering Number SY6818PLC Package Type CSP1.73x1.73- 12 Note Features  VIN=2.5V to 30V  Integrated reverse blocking FET up to 20V rating for high voltage charging mode  Extremely Low Power Path Resistance RPWPT  RPWPT=53mΩ typ.  Programmable OVP thru external resistor divider, accuracy up to +/-3%  Internal Soft Start to Prevent In-rush Current  Thermal Shutdown Protection & Auto Recovery  Current Indicator with High Accuracy up to +/-5%  Ro HS pliant and Halogen Free  pact package: CSP- 12 (1.73mmx1.73mm) Applications  Smart Phone  Tablet PCs  Mobile Device Typical Applications Figure 1. Schematic Diagram AN_SY6818 Rev. 0.9A Silergy Corp. Confidential-Prepared for Customer Use...