G5244 Global Mixed-mode Technology High-Side Power Distribution Switch Features General Description 120mΩ Ω High-Side MOSFET 2.5A of Current Limits with Foldback Operating Range:2.7V to 5.5V 1.9ms Typical VOUT Turn-On Rise Time Under voltage Lockout 65µA Quiescent Supply Current 1µA Maximum Standby Supply Current Active-High Enable Pin No Reverse Current when Power Off Shutdown Discharge Function at DSG Pin SOT-23-5 and ADFN1.5X1.5-6 Package Available The G5244 is an 120mΩ power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. Several Protection features such as current limiting with foldback, and thermal shutdown are included to prevent catastrophic switch failure caused by increasing power dissipation when continuous heavy loads or short circuit occurs. A built-in charge pump is used to drive the N-channel MOSFET that makes it free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. The G5244 has a shutdown discharge function when power switch is turned off. User could realize the shutdown discharge function by adding an external resistor between OUT PIN and DSG PIN. Applications High-Side Power Protection Switch USB Power Management USB Host and Self-Powered Bubs USB Bus-Powered Hubs Hot Plug-In Power Supplies Battery-Charger Circuits Its low quiescent supply current and small package SOT-23-5 and ADFN1.5X1.5-6 is particularly suitable in battery-powered equipment, like PDA, mobile phone. Ordering Information ORDER NUMBER MARKING G5244T11U 5244x 54 xx G5244A31U TEMP. RANGE PACKAGE (Green) -40°C to +85°C SOT-23-5 -40°C to +85°C ADFN1.5X1.5-6 Note: T1: SOT-23-5 A3: ADFN1.5X1.5-6 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit G5244 G5244 OUT 1 5 G5244 GND 2 EN 3 4 DSG IN VIN IN IN 1 6 OUT NC 2 5 GND DSG 3 4 EN DSG Shutdown Discharge Resistor CIN 1µF ON OFF EN GND OUT VOUT COUT 4.7µF ADFN1.5X1.5-6 SOT-23-5 TEL: 886-3-5788833 http://www.gmt.com.tw Ver 0.4 Oct 05, 2011 1