TPS54040
- 3.5-V to 42-V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a Pulse
Skipping Eco-Mode™ - 116-µA Operating Quiescent Current
- 1.3-µA Shutdown Current
- 100-kHz to 2.5-MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start/Sequencing
- UV and OV Power Good Output
- Adjustable UVLO Voltage and Hysteresis
- 0.8-V Internal Voltage Reference
- MSOP10 Package With PowerPAD™
- Supported by SwitcherPro Software Tool
(http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
The TPS54040 device is a 42-V, 0.5-A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.
Under voltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.
The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS54040 0.5-A, 42-V Step Down DC/DC Converter with Eco-Mode™ 数据表 (Rev. B) | PDF | HTML | 2016-1-15 | ||
| 应用手册 | Understanding Eco-mode(TM) Operation | 2016-12-5 | ||||
| 应用手册 | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015-3-5 | ||||
| 应用手册 | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013-4-17 | ||||
| 应用手册 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012-10-26 | ||||
| 应用手册 | Level Shifting Control for an Inverting Buck-boost | 2012-10-10 | ||||
| 白皮书 | Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) | 2012-3-28 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
订购和质量
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