TPS51123A
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ti.
com
SLUSAA6C – APRIL 2011 – REVISED SEPTEMBER 2012
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 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 • Therm...