TPS51275RUKT Description

The TPS51275RUKT is a Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs targeted for notebook system-power supply solutions.

TPS51275RUKT Features

• Input Voltage Range: 5 V to 24 V

• Output Voltages: 5 V and 3.3 V (Adjustable Range +10%)

• Built-in, 100-mA, 5-V and 3.3-V LDOs

• Clock Output for Charge-Pump

• ±1% Reference Accuracy

• Adaptive On-Time D-CAPTM Mode Control Architecture with 300-kHz and 355-kHz Frequency Setting

• Auto-skip Light Load Operation (TPS51275, and TPS51275C)

• 00A Light Load Operation (TPS51275B)

• Internal 0.8-ms Voltage Servo Soft-Start

• Low-Side Ros(on) Current Sensing Scheme

• Built-In Output Discharge Function

• Separate Enable Input for Switchers

• Dedicated OC Setting Terminals

• Power Good Indicator

• OVP, UVP and OCP Protection

• Non-Latch UVLO and OTP Protection

• 20-Pin, 3 mm x 3 mm, QFN (RUK)

TPS51275RUKT Applications

• Notebook Computers

• Tablet Computers