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規格書
The TPS54231 device is a 2-V, 2-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 startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.
德克萨斯仪器tps54231dr
The TPS54231 device is a 2-V, 2-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. 电流模式控制与内部斜率补偿简化了外部补偿计算，并减少元件数量，同时允许使用陶瓷输出电容器。一个电阻分压器程序的滞后输入欠压锁定。一个瞬态过电压保护电路限制电压过冲的启动和瞬态条件下。一个一个周期的电流限制方案，频率折叠和热关机保护设备和负载在过载情况下的情况。tps54231装置的一个8引脚SOIC封装，已在内部优化，提高热性能是可用的。
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