力芯微美林美深OVP开关ET9668

在快速发展的电子市场中，电源管理芯片（PMIC）扮演着至关重要的角色。它们不仅负责确保设备在各种条件下稳定运行，还致力于提高能效、延长电池寿命，并保护设备免受潜在损害。今天，我们要介绍的ET9668就是这样一款集高效能、多功能于一体的电源管理解决方案。它不仅具备出色的电气性能，还拥有紧凑的封装设计，非常适合应用于智能手机、平板电脑、存储设备以及便携式媒体设备等众多领域。
In the rapidly evolving electronics market, power management chips (PMIC) play a crucial role. They are not only responsible for ensuring stable operation of equipment in a variety of conditions, but also work to improve energy efficiency, extend battery life, and protect equipment from potential damage. Today, we will introduce ET9668 is such a high-efficiency, multi-functional power management solution. It not only has excellent electrical performance, but also has a compact package design, which is ideal for many applications such as smartphones, tablets, storage devices, and portable media devices.

一、ET9668的核心特性
ET9668是一款专为现代电子设备设计的电源管理芯片，它具备多种先进功能，能够满足不同应用场景的需求。以下是对其核心特性的详细解读：

智能过压保护（OVLO）
ET9668内置了智能过压保护机制，能够在检测到错误的输入操作条件时，自动从其输出引脚（OUT）断开系统连接。这一功能对于保护后续电路免受过高电压的损害至关重要。此外，ET9668的过压阈值（OVLO）可以通过OVLO_SEL引脚进行选择。当OVLO_SEL为高电平时，过压点为21.9V；当OVLO_SEL接地时，过压点则为12.4V。这种灵活的选择性使得ET9668能够适用于不同电压范围的输入场景。
Intelligent Overvoltage Protection (OVLO)
The ET9668 has built-in intelligent overvoltage protection that automatically disconnects the system from its output pin (OUT) when an incorrect input operating condition is detected. This function is essential to protect subsequent circuits from excessive voltage damage. In addition, the overvoltage threshold (OVLO) of the ET9668 can be selected via the OVLO_SEL pin. When OVLO_SEL is at high voltage level, the overvoltage point is 21.9V. When the OVLO_SEL is grounded, the overvoltage point is 12.4V. This flexible selectivity enables the ET9668 to be used in input scenarios with different voltage ranges

宽输入电压范围
ET9668的输入电压范围非常广泛，从2.8V到28V都能正常工作。这一特性使得它能够在各种电源条件下稳定运行，无论是低电压的便携式设备还是高电压的工业设备，都能轻松应对。
Wide input voltage range
The ET9668 has a wide range of input voltages, from 2.8V to 28V. This feature allows it to operate stably under a variety of power supply conditions, whether it is low-voltage portable equipment or high-voltage industrial equipment, which can be easily handled.

快速过压保护响应时间
在检测到过压情况时，ET9668能够在50纳秒（MAX）内做出响应，迅速切断输出以保护电路。这种快速的响应时间对于防止电路损坏至关重要，特别是在瞬态电压波动较大的应用场景中。
Fast response time for overvoltage protection
When an overvoltage situation is detected, the ET9668 is able to respond within 50 nanoseconds (MAX), quickly cutting off the output to protect the circuit. This fast response time is essential to prevent circuit damage, especially in applications where transient voltage fluctuations are large.

启动去抖动时间
ET9668的启动去抖动时间为15毫秒（TYP），这有助于确保在电源启动过程中电路的稳定性。通过这一设计，ET9668能够避免由于电源波动引起的误操作，从而提高系统的可靠性。
Enable the dejitter time
The ET9668 has a startup dejitter time of 15 milliseconds (TYP), which helps ensure circuit stability during power startup. With this design, the ET9668 avoids misoperation due to power fluctuations, thereby improving system reliability.

内部热关断保护功能
为了防止芯片因过热而损坏，ET9668内置了热关断保护功能。当芯片温度超过安全范围时，该功能会自动切断输出，以保护电路和后续设备免受损害。这一特性对于长时间工作在高负载条件下的设备尤为重要。
Internal heat off protection function
In order to prevent the chip from being damaged by overheating, the ET9668 has a built-in thermal shutdown protection function. When the chip temperature exceeds the safe range, the function automatically cuts off the output to protect the circuit and subsequent equipment from damage. This feature is particularly important for equipment that operates under high load conditions for long periods of time.

特殊OTG模式
ET9668还支持特殊的OTG（On-The-Go）模式，这使得它能够在不同设备之间实现数据传输和充电功能。这一特性对于需要频繁进行数据交换和充电的便携式设备来说非常实用。
Special OTG mode
The ET9668 also supports a special OTG (On-The-Go) mode, which enables data transfer and charging between different devices. This feature is useful for portable devices that require frequent data exchange and charging.

浪涌免疫能力
ET9668具备高达±200V的浪涌免疫能力，这意味着它能够在遭受瞬时高压冲击时保持正常工作。这一特性对于在恶劣电气环境中工作的设备来说至关重要，能够显著提高系统的稳定性和可靠性。
Surge immunity
The ET9668 has a surge immunity of up to ±200V, which means it can maintain normal operation when subjected to instantaneous high-pressure shocks. This feature is critical for equipment operating in harsh electrical environments and can significantly improve system stability and reliability.

VBUS主动放电路径
ET9668在VBUS引脚处提供了主动放电路径，这有助于在设备断电时迅速释放残留电荷，从而确保设备的安全性和可靠性。
Active discharge path of the VBUS
The ET9668 provides an active discharge path at the VBUS pin, which helps to quickly release residual charges when the device is powered off, thus ensuring the safety and reliability of the device.

ESD保护
ET9668还具备出色的ESD（静电放电）保护能力，其HBM（人体模型）静电放电保护水平高达±4KV。这一特性使得ET9668能够在各种静电环境中保持正常工作，避免因静电放电引起的电路损坏。
ESD protection
The ET9668 also has excellent ESD (electrostatic discharge) protection, with HBM (human body model) electrostatic discharge protection levels up to ±4KV. This feature enables the ET9668 to maintain normal operation in various electrostatic environments and avoid circuit damage caused by electrostatic discharge.

紧凑的WLCSP20封装
ET9668采用了先进的WLCSP20（Wafer Level Chip Scale Packaging）封装技术，这种封装技术不仅具有体积小、重量轻的优点，还符合绿色环保要求。紧凑的封装设计使得ET9668非常适合应用于空间有限的便携式设备中。
Compact WLCSP20 package
ET9668 adopts advanced WLCSP20 (Wafer Level Chip Scale Packaging) packaging technology, which not only has the advantages of small size and light weight, but also meets the requirements of green environmental protection. The compact package design makes the ET9668 ideal for use in portable devices with limited space.

二、ET9668的应用领域
凭借其出色的性能和紧凑的封装设计，ET9668在多个领域都有着广泛的应用前景：

智能手机和平板电脑
随着智能手机和平板电脑的普及，电源管理芯片的需求也在不断增加。ET9668凭借其宽输入电压范围、快速过压保护响应时间和内部热关断保护功能，能够确保这些设备在各种条件下稳定运行，同时延长电池寿命。

硬盘、存储设备和固态硬盘
在数据存储领域，电源管理芯片对于确保数据的完整性和安全性至关重要。ET9668的浪涌免疫能力和ESD保护能力使得它成为硬盘、存储设备和固态硬盘等设备的理想选择。

便携式媒体设备、笔记本电脑和MID
这些设备通常需要长时间工作在高负载条件下，因此电源管理芯片的可靠性和稳定性尤为重要。ET9668的紧凑封装设计和出色的热管理性能使得它非常适合应用于这些设备中。

数码单反相机
数码单反相机通常需要处理大量的图像数据，因此对电源管理芯片的要求较高。ET9668的宽输入电压范围和快速过压保护响应时间使得它能够满足数码单反相机的电源管理需求。

GPS和导航设备
GPS和导航设备需要长时间工作，并且经常处于复杂多变的电气环境中。ET9668的浪涌免疫能力和内部热关断保护功能使得它成为这些设备的理想电源管理解决方案。

工业手持设备和企业级设备
在工业领域，设备通常需要承受恶劣的电气环境和高温条件。ET9668的紧凑封装设计、出色的热管理性能和浪涌免疫能力使得它非常适合应用于工业手持设备和企业级设备中。

审核编辑 黄宇