TPS51125ARGET Datasheet PDF - TI

●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 requires few external components. The 270-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter’s efficiency.

●FEATURES

●• 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 R

●DS(on)

●Current Sensing

●• Built-In Output Discharge

●• Power Good Output

●• Built-in OVP/UVP/OCP

●• Thermal Shutdown (Non-latch)

●• QFN24 (RGE)