TPS65250

TPS65250 www.ti.com SLVSAA3C – JUNE 2010 – REVISED OCTOBER 2012 4.5-V TO 18-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE BUCK CONVERTER WITH INTEGRATED FET AND DYING GASP STORAGE AND RELEASE CIRCUIT Check for Samples: TPS65250 FEATURES 1 Wide Input Supply Voltage Range (4.5 V - 18 V) 0.8 V, 1% Accuracy Reference Continuous Loading: 3 A (Buck 1), 2 A (Buck 2 and 3) Maximum Current: 3.5 A (Buck 1), 2.5 A (Buck 2 and 3) Adjustable Switching Frequency 300 kHz - 2.2 MHz Set By External Resistor External Synchronization Pin for Oscillator External Enable/Sequencing and Soft Start Pins Adjustable Current Limit Set By External Resistor Soft Start Pins Current-Mode Control With Simple Compensation Circuit Power Good and Reset Generator Storage and Release Circuit Optimized for Reduction of Storage Capacitance in Dying Gasp Mode (Option) Low Power Mode Set By External Signal QFN Package, 40-Pin 6 mm x 6 mm RHA APPLICATIONS xDSL/xPON Modems Cable Modems Power Line Modem Home Gateway and Access Point Networks Wireless Routers Set Top Box DESCRIPTION/ORDERING INFORMATION The TPS65250 features three synchronous wide input range high efficiency buck converters. The converters are designed to simplify its application while giving the designer the option to optimize their usage according to the target application. The converters can operate in 5-, 9-, 12- and 15-V systems and have integrated power transistors. The output voltage can be set e...