TPS54332数据手册集成电路（IC）的DCDC开关稳压器规格书PDF

描述 Description

The TPS54332 is a 28-V, 3.5-A non-synchronous buck converter that integrates a low-RDS(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 applications. Current mode control with internal slope compensation simplifies the external compensation calculations 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 start-up and transient conditions. 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 TPS54332 is available in an 8-pin SOIC PowerPAD™ package.

特性 Features

• 3.5-V to 28-V input voltage range
• Adjustable output voltage down to 0.8 V
• Integrated 80-mΩ high-side MOSFET supports up to 3.5-A continuous output current
• High efficiency at light loads with a pulse-skipping Eco-Mode™
• Fixed 1-MHz 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 foldback and thermal shutdown protection
• Available in thermally enhanced 8-Pin SOIC PowerPAD™ package
• Supported by WEBENCH™ tool (http://www.ti.com/lsds/ti/analog/webench/overview.page)