RT9701 Datasheet | Richtek

Description The RT9701 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 MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. Its low quiescent current (23u A) and small package (SOT-23-5) is particularly suitable in battery-powered portable equipment. 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. Ordering Information Package Type B : SOT-23-5 BL : SOT-23-5 (L-Type) Note : Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) Richtek products are : ` Ro HS pliant and patible with the current require- ments of IPC/JEDEC J-STD-020. ` Suitable for use in Sn Pb or Pb-free soldering processes. Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. Features z 100mΩ Typ. High-Side NMOSFET (SOT-23-5) z Guaranteed 1.1A Continuous Current z 1.5A Current Limit z Small SOT-23-5 Package Minimizes Board Space z Soft Start z Thermal Protection z Low 23u A Supply Current z Wide Input Voltage Range : 2.2V to 6V z UL Approved - #E219878 z Ro HS pliant and 100% Lead (Pb)-Free Applications z Battery-Powered Equipment z Motherboard USB Power Switch z USB Device Power Switch z Hot-Plug Power Supplies z Battery-Charger Circuits Pin Configurations (TOP VIEW) VOUT VOUT GND VIN SOT-23-5 VOUT VOUT GND VIN SOT-23-5 (L-Type) Typical Application Circuit CIN 1u F RT9701x BL VIN VOUT VIN VOUT GND VOUT - COUT 470u F - 470u F, Low ESR Electrolytic DS9701-16 April 2011 .richtek. 1 Test Circuits CIN + 1u F RT9701x BL VIN VOUT VIN VOUT...