TPS65280

TPS65280 www.ti.com SLVSBE4A – JUNE 2012 – REVISED SEPTEMBER 2012 DUAL POWER DISTRIBUTION SWITCH AND MONOLITHIC SYNCHRONOUS BUCK REGULATOR WITH 5.5-V TO 18-V INPUT VOLTAGE, FIXED 5-V OUTPUT VOLTAGE AND 4-A MAXIMUM CURRENT Check for Samples: TPS65280 FEATURES 1 INTEGRATED DUAL POWER DISTRIBUTION SWITCHES Operating Input Voltage Range: 2.5 V to 6 V Integrated Back-to-Back Power MOSFETs With 80-mΩ On-Resistance Up to 1-A Maximum Load Current Current Limiting at Typical 1.2 A (0.8 A,1.6 A or 2 A Available With Manufacture Trim Options) Latch-off Over Current Protection Versions Reverse Input-Output Voltage Protection Built-In Soft-Start 4-kV HBM and 200-V MM ESD Protection at Power Switch Output Pins 15-kV ESD Protection per IEC 61000-4-2 With 10-µF External Capacitance Over Temperature Protection 24-Lead QFN (RGE) 4-mm x 4-mm Package xxx xxx xxx xxx INTEGRATED BUCK DC/DC CONVERTER Wide Input Voltage Range: 5.5 V to 18 V Maximum Continuous 4-A Output Load Current Fixed Output Voltage: 5 V ±1% Adjustable 300-kHz to 1.4-MHz Switching Frequency External Clock Synchronization Adjustable Soft Start and Tracking With Built-In 1-ms Internal Soft-start Time Cycle-by-Cycle Current Limit Output Over-voltage Protection APPLICATIONS USB Ports and Hubs Digital TV Set-Top Boxes VOIP Phones Tablet PC DESCRIPTION/ORDERING INFORMATION The TPS65280 incorporates dual N-channel MOSFET power switches for USB power distribution systems that require d...