A4770

AiT Semiconductor Inc. www.ait-ic.com A4770 POWER SWITCH 100mΩ POWER DISTRIBUTION DESCRIPTION The A4770 is an integrated 100mΩ power switch for self-powered and bus-powered Universal Series Bus (USB) applications. A built-in charge pump is used to drive the N-channel NMOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. Its low quiescent supply current (23μA) and small package (SOT-25) is particularly suitable in battery-powered portable equipment. FEATURES  100mΩ Typ. High-Side NMOSFET (SOT-25)  Guaranteed 1.1A Continuous Current  1.5A Current Limit  Small SOT-25 Package Minimizes Board Space  Soft Start  Thermal Protection  Low 23uA Supply Current  Wide Input Voltage Range: 2.2V ~ 6V  Available in SOT-25 Package Several protection functions include soft start to limit inrush current during plug-in, current limiting at 1.5A to meet USB power requirement, and thermal shutdown to protect damage under over current conditions. The A4770 is available in SOT-25 package. APPLICATION  Battery-Powered Equipment  Motherboard USB Power Switch  USB Device Power Switch  Hot-Plug Power Supplies  Battery-Charger Circuits ORDERING INFORMATION TYPICAL APPLICATION Package Type Part Number SOT-25 A4770E5R E5 A4770E5VR Note R: Tape & Reel, V: Green Package AiT provides all Pb free products Suffix “ V “ means Green Package REV1.0 - JUL 2011 RELEASED - -1- AiT Semiconductor Inc. www.ait-ic.com...