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