TPS7A4201 器件是一款能够耐受高电压的线性稳压器,不仅融合了耐热增强型封装 (MSOP-8) 的优势,还能够承受持续直流电压或最高可达 28V 的瞬态输入电压。
TPS7A4201 与任何高于 4.7µF 的输出电容以及高于 1µF 的输入电容搭配使用时均可保持稳定(过热和浪涌保护)。鉴于这款器件的封装 (MSOP-8) 小巧且可能使用的输出电容也较小,因此实现起来只需占用非常小的电路板空间。此外,TPS7A4201 还提供了一个与标准 CMOS 逻辑兼容的使能引脚 (EN),用于使能低电流关断模式。
TPS7A4201 具有热关断和电流限制功能,以便在故障情况下保护系统。MSOP-8 封装的工作温度范围为 TJ = -40°C 至 +125°C。
此外,TPS7A4201 器件非常适合在电信和工业 应用中利用中间电压轨生成低压电源;该器件不但能够提供一个充分稳压的电压轨,而且能够承受快速电压瞬变并在其间保持稳压状态。这些 功能 相当于一套更为简单且经济高效的电气浪涌保护电路,因此受到各类应用的 青睐。
器件型号 | 封装 | 封装尺寸(标称值) |
---|---|---|
TPS7A4201 | MSOP PowerPAD (8) | 3.00mm x 3.00mm |
Changes from * Revision (December 2011) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
OUT | 1 | O | Regulator output. A capacitor greater than 4.7 µF must be tied from this pin to ground to assure stability. |
FB | 2 | I | This pin is the input to the control-loop error amplifier. It is used to set the output voltage of the device. |
NC | 3 | — | Not internally connected. This pin must either be left open or tied to GND. |
6 | |||
7 | |||
GND | 4 | — | Ground |
EN | 5 | I | This pin turns the regulator on or off. If VEN ≥ VEN_HI the regulator is enabled. If VEN ≤ VEN_LO, the regulator is disabled. If not used, the EN pin can be connected to IN. Make sure that VEN ≤ VIN at all times. |
IN | 8 | I | Input supply |
PowerPAD | — | — | Solder to printed circuit board (PCB) to enhance thermal performance. NOTE: The PowerPAD is internally connected to GND. Although it can be left floating, it is highly recommended to connect the PowerPAD to the GND plane. |