TPS51123
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com
SLUS890E – DECEMBER 2008 – REVISED JANUARY 2013
Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation and 100-mA LDOs for Notebook System Power
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FEATURES
1
•2 Wide-Input
Voltage Range: 5.
5 V to 28 V • Output
Voltage Range: 2 V to 5.
5 V • 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 Softstart • 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...