TPS54327DDA

Features for the TPS54327

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 V

Highly Efficient Integrated FETs Optimized

for Lower Duty Cycle Applications

– 100 mΩ (High-Side) and 70 mΩ (Low-Side)

High Efficiency, Less Than 10 µA at shutdown

High Initial Bandgap Reference Accuracy

Adjustable Soft Start

Prebiased Soft Start

700-kHz Switching Frequency (fSW)

Cycle-By-Cycle Overcurrent Limit

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)

All other trademarks are the property of their respective owners

Description for the TPS54327

The TPS54327 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54327 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 TPS54327 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54327 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 TPS54327 is available in the 8-pin DDA package and 10-pin DRC, and is designed to operate from –40°C to 85°C.