谢谢达尔闻的奖品！真的是好久没用中过奖了，很开心~

喜欢电子技术的童鞋可以关注下：达尔闻(https://space.bilibili.com/430777205)

奖品是一块TI的线性稳压芯片的评估模块：TPS74401EVM-118(TPS74401 Evaluation Module)

快递很给力用的顺丰，直接送到家。行动不便的我省去了冒死拿快递的痛苦，芜湖~

收到快递，挺大一个盒子，心想一个电源板能有多大？！

然后打开，嗯，这个大小才正常么~

TPS 74401好小啊，5 mm x 5 mm x 1 mm QFN的封装。

官网介绍：https://www.ti.com/tool/TPS74401EVM-118

Overview

The TPS74401EVM-118 evaluation module (EVM) is designed to help the user easily evaluate and test the operation and functionality of the TPS74401 LDO linear regulator. The EVM uses the TPS74401, 3 A linear regulator with programmable soft-start and integrated power good (PG). Refer to the User’s Guide for setup instructions for the hardware, a schematic diagram, a bill of materials (BOM), and PCB layout drawings for the EVM.

• Supports input voltages as low as 0.9 V with external bias supply due to ultra-low dropout

• Adjustable output (0.8 V to 3.6 V) up to 3 A

• Soft-start time set by external capacitor

• Stable with any or no output capacitor

• 1% accuracy over line, load and temperature

• Open drain power good (PG)

• 5 mm x 5 mm x 1 mm QFN package

看介绍还是很不错的！有时间测试看看~

……………………

等等！我艹，突然意识到，这玩意儿是美国产！赶紧把包装盒扔掉，去好好洗手！[喜极而泣]

酒精消毒纸巾在哪？！啊~~~