TPS51123ARGER

双路同步降压型控制器，具有Out-of Audioâ - ?? ¢操作和100mA LDO的用于笔记本系统电源 Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation and 100-mA LDOs for Notebook System Power

DESCRIPON

The TPS51123A is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The TPS51123A supports high-efficiency, fast transient responses and provides a combined power-good signal.

FEATURES

• Wide-Input Voltage Range: 5.5V to 28V

• Output Voltage Range: 2V to 5.5V

• Built-in 100-mA 5-V/3.3-V LDO with Switches

• Built-in 1% 2-V Reference Output

• With/Without Out-of-Audio™ Mode Selectable Light-Load and PWM-Only Operation

• Internal 1.6-ms Voltage Servo Soft-Start

• Adaptive On-Time Control Architecture with Four Selectable Frequency Setting

• 4500 ppm/°C RDSon Current Sensing

• Built-In Output Discharge

• Power Good Output

• Built-in OVP/UVP/OCP

• Thermal Shutdown Non-latch

• 24-Pin QFN RGE Package

APPLICATIONS

• Notebook Computers

• I/O Supplies

• System Power Supplies