TPS53125PW

双路同步降压控制器，适用于低压电源轨 DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS

**Description**

The TPS53125 is a dual, adaptive on-time D-CAP2™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of various end equipment"s power bus regulators with a low external component count and low standby consumption. The main control loop for the TPS53125 uses the D-CAP™ Mode topology which provides a very fast transient response with no external component.

**Features**

1• D-CAP2™ Mode Control

– Fast Transient Response

– No External Parts Required for Loop Compensation

– Compatible With Ceramic Output Capacitors

• High Initial Reference Accuracy ±1%

• Low Output Ripple

• Wide Input Voltage Range: 4.5 V to 24 V

• Output Voltage Range: 0.76 V to 5.5 V

• Low-Side RDSON Loss-Less Current Sensing

• Adaptive Gate Drivers with Integrated Boost Diode

• Adjustable Soft Start

• Non-Sinking Pre-Biased Soft Start

• 350-kHz Switching Frequency

• Cycle-by-Cycle Over-Current Limiting Control

• 30-mV to 300-mV OCP Threshold Voltage

• Thermally Compensated OCP by 4000 ppm/°C at ITRIP

**Applications**

• Point-of-Load Regulation in Low Power Systems for Wide Range of Applications

– Digital TV Power Supply

– Networking Home Terminal

– Digital Set-Top Box STB

– DVD Player/Recorder

– Gaming Consoles