TPS51123ARGET

The TPS51123ARGET is a dual-synchronous step down Buck Controller with Out-of-Audio™ operation and targeted for notebook system power supply solutions. It provides 5 and 3.3V LDOs and requires few external components. The TPS51123A supports high-efficiency, fast transient responses and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 to 28V and supports output voltages from 2 to 5.5V.

• Built-in 1% 2V reference output
• With/without Out-of-Audio™ mode selectable light-load and PWM-only operation
• Internal 1.6ms voltage servo soft-start
• Adaptive on-time control architecture with four selectable frequency setting
• 4500ppm/°C RDS(on) Current sensing
• Built-in output discharge
• Power good output
• Built-in OVP/UVP/OCP
• Thermal shutdown (non-latch)

Tags: TPS51123ARGET