Description:

The TPS54327 device is an adaptive on-time D-CAP2TMmodesynchronousbuckconverter.TheTPS54327 enables system designers to completethe suite of various end equipment's power busregulators with a cost effective, low component count,low standby current solution. The main control loopfor the TPS54327 uses the D-CAP2 mode controlwhich provides a fast transient response with noexternal compensation components. The TPS54327also has a proprietary circuit that enables the deviceto adopt to both low equivalent series resistance(ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. Thedevice operates from 4.5-V to 18-V VIN input. Theoutput voltage can be programmed between 0.76 Vand 7 V. The device also features an adjustable softstart time. The TPS54327 is available in the 8-pinDDA package and 10-pin DRC, and is designed tooperate from -40°C to 85°C.

Features:

D-CAP2TM Mode Enables Fast TransientResponse

Low-Output Ripple and Allows Ceramic OutputCapacitor

Wide ViN Input Voltage Range: 4.5 V to 18 V

Output Voltage Range: 0.76 V to 7 V

Highly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications- 100 mO (High-Side) and 70 mO (Low-Side)High Efficiency, Less Than 10 uA at shutdownHigh 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 VoltageSystem

- Digital TV Power Supply

High Definition Blu-ray Disc TM Players

Networking Home Terminal

Digital Set Top Box (STB)