Datasheet Texas Instruments TPS51125ARGER — Datenblatt

TPS51125A
www.ti.com SLUS976F – SEPTEMBER 2009 – REVISED SEPTEMBER 2012 Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation
and 100-mA LDOs for Notebook System Power
Check for Samples: TPS51125A FEATURES APPLICATIONS 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-Audioв„ў 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/В°C RDS(on) Current Sensing
Built-In Output Discharge
Power Good Output
Built-in OVP/UVP/OCP
Thermal Shutdown (Non-latch)
QFN24 (RGE) Notebook Computers
I/O Supplies
System Power Supplies DESCRIPTION
The TPS51125A 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 …