TPS54227DDAR

The TPS54227 is an adaptive on-time D-CAP2™ mode synchronous buck converter. It enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. It also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5 V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54227 is available in the 8-pin DDA package, and designed to operate from -40°C to 85°C.

Applications

• Wide Range of Applications for Low Voltage System
• Digital TV Power Supply
• High Definition Blu-ray Disc Players
• Networking Home Terminal
• Digital Set Top Box (STB)

Key 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
• -155 mΩ (High Side) and 108 mΩ (Low Side)
• High Efficiency, Less Than 10 μA at Shutdown
• High Initial Bandgap Reference Accuracy
• Adjustable Soft Start
• Pre-Biased Soft Start
• 700-kHz Switching Frequency (fSW)
• Cycle By Cycle Over Current Limit