TPS51123A
FEATURES
- 2 Wide-Input Voltage Range: 5.5 V to 28 V
- Output Voltage Range: 2 V to 5.5 V
- Built-in 100-m A 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 puters
- I/O Supplies
- System Power Supplies
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 ponents. The TPS51123A supports high-efficiency, fast transient responses and provides a bined power-good signal. Out-of Audio™ mode light-load operation enables low acoustic noise at much higher...
