TPS54329DDAR Power Path Management IC Switching Voltage Regulators 4.5-18Vin,3A Sync SD Converter

FEATURES

• D-CAP2TM 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
  – 100 mΩ (High Side) and 74 mΩ (Low Side)

• 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

APPLICATIONS

• Wide Range of Applications for Low Voltage System

• – Digital TV Power Supply

• – High Definition Blu-ray DiscTM Players

• – Networking Home Terminal

• – Digital Set Top Box (STB)

DESCRIPTION

The TPS54329 is an adaptive on-time D-CAP2TM mode synchronous buck converter. TheTPS54329 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 for the TPS54329 uses the D-CAP2TM mode control which provides a fast transient response with no external compensation components. The TPS54329 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 TPS54329 is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.