TPS65232A2DCA

三联降压电源管理IC TRIPLE BUCK POWER MANAGEMENT IC

DESCRIPON/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 external components.

FEATURES

• Wide Input Supply Voltage Range10.8 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