TPS54427DDAR Description

An adaptive on-time D-CAP2TM mode synchronous buck converter is the TPS54427. The TPS54427 provides system designers with an affordable, low component count, and low standby current option to finish the suite of different end equipment's power bus regulators. The DCAP2TM mode control, which offers a quick transient response without requiring any additional compensating components, is used in the TPS54427's primary control loop.

Additionally, the TPS54427 features a proprietary circuit that enables it to support ceramic capacitors with ultra-low equivalent series resistance (ESR) as well as output capacitors with low equivalent series resistance (ESR), such POSCAP or SP-CAP. The VIN input range for this device is 4.5 to 18. Programmable range for the output voltage is 0.76 V to 7 V. Additionally, the device has an adjustable soft start time. The TPS54427 can function between -40°C and 85°C and is offered in both an 8-pin DDA package and a 10-pin DRC configuration.

TPS54427DDAR Features

• D-CAP2? Mode Enables Fast Transient Response

• Low Output Ripple and Allows Ceramic Output Capacitor

• Wide VIN Input Voltage Range: 4.5 V to 18 V

• Output Voltage Range: 0.76 V to 7.0 V

• Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications

• High Efficiency, Less Than 10 μA at Shutdown

• High Initial Bandgap Reference Accuracy

• Adjustable Soft Start

• Pre-Biased Soft Start

• 650-kHz Switching Frequency (fSW)

• Cycle by Cycle Over Current Limit

TPS54427DDAR Applications

• Digital TV Power Supply

• High Definition Blu-ray Disc? Players

• Networking Home Terminal

• Digital Set Top Box (STB)