■ General Description
The LN9701 is an integrated 100m? 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 (23μA) 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.
■ Features
100m? Typ. High-Side NMOSFET (SOT-23-5)
Guaranteed 1.1A Continuous Current
1.5A Current Limit
Small SOT-23-5 Package Minimizes Board Space
Soft Start
Thermal Protection
Low 23μA Supply Current
Wide Input Voltage Range: 2.2V to 6V
■ Applications
Battery-Powered Equipment
Motherboard USB Power Switch
USB Device Power Switch
Hot-Plug Power Supplies
Battery-Charger Circuits