The TPS54531 device is a 28-V, 5-A non-synchronous buck converter that integrates a low R_DS(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 under-voltage 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 TPS54531 device is available in 8-pin SO PowerPAD™ package that has been internally optimized to improve thermal performance.

德克萨斯仪器tps54531ddar
的tps54531装置是一个28，5非同步降压转换器，集成了低RDS（ON）的高侧MOSFET。为了提高轻载效率，脉冲跳跃生态模式功能会自动启动。此外，1µ关闭电源电流允许设备使用电池供电的应用。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。电阻分压器编程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，频率回折和热关机保护设备和负载在过载情况下的情况。的tps54531装置具有自动™引脚封装，内部优化提高了热性能。

规格书	TPS54531
输出数	1
同步整流器	No
安装类型	Surface Mount
频率 - 开关	570kHz
标准包装	2,500
供应商设备封装	8-SO PowerPad
电压 - 输出	0.8 V ~ 25 V
封装	Tape & Reel (TR)
电流 - 输出	5A
工作温度	-40°C ~ 150°C
输出类型	Adjustable
封装/外壳	8-SOIC (0.154", 3.90mm Width) Exposed Pad
PWM型	Current Mode
类型	Step-Down (Buck)
电压 - 电压	3.5 V ~ 28 V
开关频率	570 kHz
输出电流	5.5 A
工作温度范围	- 40 C to + 150 C
系列	TPS54531
安装风格	SMD/SMT
最大输入电压	28 V
最低工作温度	- 40 C
电源电压 - 最小	3.5 V
输入电压最小	3.5 V
最高工作温度	+ 150 C
RoHS	RoHS Compliant
拓扑结构	Buck