TPS65232

Not Recommended for New Designs TPS65232 www.ti.com TRIPLE BUCK POWER MANAGEMENT IC Check for Samples: TPS65232 SLVSA42 – FEBRUARY 2010 FEATURES 1 Wide Input Supply Voltage Range (10.8 V - 22 V) One Adjustable PWM Buck Controller – 10.8-V - 22-V Input Voltage Range – 3.3-V - 6.1-V Output Voltage Range – 500-kHz Switching Frequency – Type III Compensation – Programmable Current Limit Two Adjustable Step-Down Converter With Integrated Switching FETs: – 4.75-V - 5.5-V Input – 0.9-V-3.3-V Output Voltage Range – 3-A Output Current – 1-MHz Switching Frequency – Type III Compensation Pull-Up Current Sources on Buck Enable Pins for Accurate Start-Up Timing Control with Preset Default Over Current Protection on All Rails Thermal Shutdown to Protect Device During Excessive Power Dissipation Thermally Enhanced Package for Efficient Heat Management (48-pin HTSSOP or 6-mm x 6-mm 40-Pin QFN) APPLICATIONS xDSL and Cable Modems Wireless Access Points STB, DTV, DVD and Home Gateway DESCRIPTION/ORDERING INFORMATION The TPS65232 provides one PWM buck controller, two adjustable, synchronous buck regulators. The SMPS have integrated switching FETs for optimized power efficiency and reduced external component count. All power blocks have thermal and over current/short circuit protection. The TPS65232 startup timing can be controlled through buck enable pins. The buck controller and buck converters have internal pole/zero pairs to help stabilizing the system with minimum ...