TPS51123A Datasheet PDF - TI

DESCRIPTION

●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 RDS(on) 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