描述
The TPS54331 device is a 28-V, 3-A non-synchronous *** converter that integrates a low ***(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply-current allows the device to be used in battery-powered applicati***. Current mode control with internal slope compensation simplifies the external compensation calculati*** and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditi***. A cycle-by-cycle current-limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 device is ***ailable in an 8-pin SOIC package and 8-pin SO PowerPAD package that h***e been internally optimized to improve thermal performance.
特性
· 3.5 to 28-V Input Voltage Range
· Adjustable Output Voltage Down to 0.8 V
· Integrated 80-mΩ High-Side MOSFET
Supports up to 3-A Continuous Output
Current
· High Efficiency at Light Loads With a
Pulse Skipping Eco-mode™
· Fixed 570 kHz Switching Frequency
· Typical 1-µA Shutdown Quiescent
Current
· Adjustable Slow-Start Limits Inrush
Currents
· Programmable UVLO Threshold
· Overvoltage Transient Protection
· Cycle-by-Cycle Current Limit, Frequency Fold
Back, and Thermal Shutdown Protection
· ***ailable in Easy-to-Use SOIC8 Package or
Thermally Enhanced SOIC8 PowerPAD™ Package
· Supported by WEBENCH® Software Tool
(www.TI.com/WEBENCH)
· APPLICATI***
o C***umer Applicati*** such as Set-Top Boxes,
CPE Equipment, LCD Displays, Peripherals, and
Battery Chargers
o Industrial and Car-Audio Power Supplies
o 5-V, 12-V, and 24-V Distributed Power Systems
封装：SOIC (D)