TPS54240DGQR开关稳压器3.5-42V原装TI

1 Features 3 Description

1 The TPS54240 device is a 42-V, 2.5-A, step-down • 3.5-V to 42-V Input Voltage Range

regulator with an integrated high-side MOSFET.

• 200-mΩ High-Side MOSFET Current mode control provides simple external

• High Efficiency at Light Loads With a Pulse compensation and flexible component selection. A

Skipping Eco-Mode™ low-ripple, pulse skip mode reduces the no load,

• 138-μA Operating Quiescent Current regulated output supply current to 138 μA. Using the

enable pin, shutdown supply current is reduced to 1.3

• 1.3-μA Shutdown Current μA, when the enable pin is low.

• 100-kHz to 2.5-MHz Switching Frequency

Undervoltage lockout is internally set at 2.5 V, but it

• Synchronizes to External Clock can be increased using the enable pin. The output

• Adjustable Slow Start and Sequencing voltage startup ramp is controlled by the slow-start

• UV and OV Power Good Output pin that can also be configured for sequencing and

tracking. An open-drain power good signal indicates

• Adjustable UVLO Voltage and Hysteresis the output is within 94% to 107% of its nominal

• 0.8-V Internal Voltage Reference voltage.

• 10-Pin HVSSOP and 10-Pin 3-mm x 3-mm VSON A wide switching frequency range allows efficiency Packages with PowerPAD™ and optimization of external component size.

• Supported by WEBENCH® Software Tool Frequency foldback and thermal shutdown protects

the part during an overload condition.

2 Applications The TPS54240 is available in 10-pin, thermally•

12-V and 24-V Industrial and Commercial Low- enhanced HVSSOP and 10-pin 3-mm x 3-mm

Power Systems PowerPAD package.

TPS54240DGQRTPS54240DGQRTPS54240DGQRTPS54240DGQR

1特征3描述

TPS54240器件为42-V、2.5-A、降压3.5-V至42-V输入电压范围

带有集成高侧MOSFET的调节器。

•200 - mΩ高端MOSFET电流模式控制提供了简单的外部

•具有脉冲补偿和灵活的组件选择在轻负载下的高效率。一个

跳过经济型™低脉动,脉冲跳过模式降低了空载,

•138 -μA操作静态电流调节138μA电源电流输出。使用

启用引脚，关机电源电流减少到1.3

•1.3 -μa关闭当前μA,使销时低。

•100 khz到2.5 mhz的开关频率

内部的低压锁定设置为2.5 V，但它

•使用enable pin增加与外部时钟的同步。输出

•可调慢启动和顺序电压启动匝道由慢启动控制

•UV和OV功率良好的输出引脚，也可以配置为测序和

跟踪。开放功率良好的信号

•可调UVLO电压和滞后输出在其标称值的94%至107%以内

•0.8 v内部参考电压。

•10-Pin HVSSOP和10-Pin 3毫米x 3毫米VSON广泛的开关频率范围允许效率包PowerPAD™和优化外部组件的大小。

•支持WEBENCH®软件工具监听频率和热关机保护

在过载状态下的部件。

应用程序TPS54240可在10引脚，热•

12-V和24 v工商业低增强型HVSSOP和10引脚3-mm x 3-mm

电力系统PowerPAD包。

•GSM、GPRS机队管理模块、设备信息(1)

eMeters和安全系统