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Technical content
Features
/square6 120m ΩΩ ΩΩ High-Side MOSFET /square6 2.5A of Current Limits with Foldback /square6 Operating Range:2.7V to 5.5V /square6 1.9ms Typical VOUT Turn-On Rise Time /square6 Under voltage Lockout /square6 65 µA Quiescent Supply Current /square6 1µA Maximum Standby Supply Current /square6 Active-High Enable Pin /square6 No Reverse Current when Power Off /square6 Shutdown Discharge Function at DSG Pin /square6 SOT-23-5 and ADFN1.5X1.5-6 Package Available
Applications
/square6 High-Side Power Protection Switch /square6 USB Power Management /square6 USB Host and Self-Powered Bubs /square6 USB Bus-Powered Hubs /square6 Hot Plug-In Power Supplies /square6 Battery-Charger Circuits General Description The G5244 is an 120m Ω 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 increas- ing 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 shut- down discharge function by adding an external resistor between OUT PIN and DSG PIN. 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
NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5244T11U 5244x -40 °C to +85 °C SOT-23-5 G5244A31U 54 xx -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 VOUT VIN C OUT 4.7 µF C IN 1µF IN EN GND OUT ON OFF DSG OUT SOT-23-5 EN GND IN G5244 DSG Shutdown Discharge Resistor ADFN1.5X1.5-6 G5244 IN NC DSG EN GND OUT G5244 VOUT VIN C OUT 4.7 µF C IN 1µF IN EN GND OUT ON OFF DSG OUT SOT-23-5 EN GND IN G5244 DSG Shutdown Discharge Resistor ADFN1.5X1.5-6 G5244 IN NC DSG EN GND OUT